JADWAL ACARA SEMIRATA JADWAL PARALLEL SESSION KUMPULAN ABSTRAK

BKS-PTN Barat

Semirata 2016 Bidang MIPA BKS-PTN Barat Graha Sriwijaya, Universitas Sriwijaya Palembang, 22-24 Mei 2016

KUMPULAN

ABSTRAK KELOMPOK KIMIA  JADWAL ACARA SEMIRATA  JADWAL PARALLEL SESSION  KUMPULAN ABSTRAK

JADWAL ACARA SEMIRATA Welcome Dinner dan Ramah Tamah Bersama Walikota Palembang (di Rumah Dinas Walikota) Minggu, 22 Mei 2016 Pukul 19.30 - 21.00 WIB

ACARA SEMINAR DAN RAPAT TAHUNAN Graha Sriwijaya UNSRI Bukit Besar Senin, 23 Mei 2016 Waktu (WIB)

Kegiatan

Pembicara

Keterangan

07.00 - 08.30

Registrasi Peserta Seminar

-

Graha Sriwijaya

08.30 - 09.00

Pembukaan

MC

Graha Sriwijaya

09.00 - 09.10

Laporan Ketua Panitia

Dr. Suheryanto, M.Si.

Graha Sriwijaya

09.10 - 09.15

Sambutan Dekan FMIPA UNSRI

Drs. Muhammad Irfan, M.T.

Graha Sriwijaya

09.15 - 09.20

Sambutan Ketua BKS PTN MIPA Wil. Barat

Dadan Kusnandar, Ph.D.

Graha Sriwijaya

09.20 - 09.30

Sambutan Rektor UNSRI

Prof. Dr. Ir. H. Anis Saggaff, MSCE.

Graha Sriwijaya

09.30 - 10.00

Foto Session & Coffee Break

MC

Graha Sriwijaya

10.00 - 10.40

Plenary Session 1

-

Graha Sriwijaya

10.40 - 11.20

Plenary Session 2

-

Graha Sriwijaya

11.20 - 12.00

Plenary Session 3

-

Graha Sriwijaya

12.00 - 13.00

Ishoma

-

Graha Sriwijaya

13.00 - 16.00

Rapat Tahunan Dekan FMIPA BKS Wil. Barat

-

Graha Sriwijaya

13.00 - 16.00

Rapat Tahunan Ketua Jurusan/Prodi

-

Gedung D3FE

13.00 - 16.00

Parallel Session

-

Gedung D3FE

16.00 - 16.30

Penutupan

-

Graha Sriwijaya

SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

iii

Jadwal Acara

JADWAL PARALLEL SESSION Waktu Tempat

: Senin, 23 Mei 2016 : Gedung Diploma 3 Fakultas Ekonomi UNSRI Bukit Besar

(Lihat Jadwal Parallel Session)

WISATA "MUSI TOUR" Waktu : Selasa, 24 Mei 2016 Mulai Pukul 09.00 WIB Tempat berkumpul : ditentukan kemudian Rute Perjalanan dari Benteng Kuto Besak (BKB) menuju Pulau Kemaro dengan menggunakan Kapal Pesiar.

iv

Graha Sriwijaya UNSRI 22-24 Mei 2016

JADWAL PARALLEL SESSION KELOMPOK KIMIA KIMIA: RUANG 1 No

Waktu

No Reg.

Pemakalah

Asal Instansi

Judul Makalah

1

13.00 - 13.10

K-2

Adlis Santoni

Univ. Andalas

2

13.10 - 13.20

K-3

Afrida

Univ. Jambi

3

13.20 - 13.30

K-4

Afrizal Itam

Univ. Andalas

4

13.30 - 13.40

K-8

Andita Utami

Univ. Jambi

5

13.40 - 13.50

K-18

Bustanul Arifin

Univ. Andalas

6

13.50 - 14.00

K-31

Dwita Oktiarni

Univ. Bengkulu

7

14.00 - 14.10

K-42

Grace Thresia Nainggolan

Univ. Negeri Medan

8

14.10 - 14.20

K-46

Hasnirwan

Univ. Andalas

9

14.20 - 14.30

K-65

Lusiana

Univ. Bengkulu

10 14.30 - 14.40

K-77

Muhamad Agus Wibowo

Univ. Tanjungpura

11 14.40 - 14.50

K-81

Murniana

Univ. Syiah Kuala

12 14.50 - 15.00

K-101

Suryati

Univ. Andalas

SPINASTEROL FROM FILICIUM DECIPIENS STEMBARK AND ANTIOXIDANT ACTIVITY OF FRACTION PHENOLIC COMPOUND FROM HERB OF PATIKAN CINA, EUPHORBIA THYMIFOLIA LINN. AKTIFITAS ANTIOKSIDAN DAN SITOTOKSISITAS EKSTRAK DAUN ALPUKAT (PERSEA AMERICANA MILL.) ISOLASI DAN UJI AKTIVITAS SENYAWA AKTIF ANTIHIPERURIKEMIA DARI TUMBUHAN SIDA RHOMBIFOLIA ISOLASI DAN UJI ANTIOKSIDAN SENYAWA KUMARIN DAN FLAVONOID DARI TANAMAN FRAGEA CEILANICA THUNB UTILIZATION STUDY OF IPOMOEA BATATAS EXTRACT AS NATURAL INDICATOR TO DETECT BORAX EFEKTIVITAS EKSTRAK BIJI PEPAYA (CARICA PAPAYA) TERHADAP PENINGKATAN KEMATIAN CACING HATI KAMBING (FASCIOLA HEPATICA) IN VITRO ISOLATION AND CHARACTERIZATION OF SECONDARY METABOLITES FROM ACTIVE FRACTION TO ANTIOXIDANT ASSAY FROM STEAM BARK OF CASTOR BEAN EXTRACT (RICINUS COMMUNIS LINN) PENENTUAN AKTIFITAS ANTIOKSIDAN EKSTRAK ETANOL DAUN SALAM (EUEUGENIA POLYANTHA WIGHT), DAUN JAMBU BIJI (PSIDIUM GUAJAVA) DAN DAUN JATI BELANDA (GUAZUMA ULMIFOLIA LAMK.) UJI POTENSI ANTIKANKER BEBERAPA TUMBUHAN OBAT ASAL KALIMANTAN BARAT AKTIVITAS ANTIMIKROBIAL EKSTRAK ETIL ASETAT DAUN GALINGGANG (CASIA ALATA) ISOLATION AND CHARACTERIZATION OF COUMARIN COMPOUND FROM SUBANG-SUBANG PLANTS (SPILANTHES PANICULATA WALL. EX. DC)

13 15.00 - 15.10

K-102

Susilawati

Univ. Riau

BENZOFENON GLUKOSIDA DARI EKSTRAK ETIL ASETAT BUAH MAHKOTA DEWA (PHALERIA MACROCARPA (SCHEFF.) BOERL.)

14 15.10 - 15.20

K-103

Sutopo Hadi

Univ. Lampung

KAJIAN POTENSI TIGA SENYAWA TRIFENILTIMAH(IV) HIDROKSIBENZOAT SEBAGAI INHIBITOR KOROSI PADA BAJA LUNAK PADA MEDIA NACL

15 15.20 - 15.30

K-106

Tati Suhartati

Univ. Lampung

ISOLASI SENYAWA METABOLIT SEKUNDER DARI FRAKSI NON POLAR KULIT BATANG TUMBUHAN KENANGKAN (ARTOCARPUS RIGIDA)

16 15.30 - 15.40

K-107

Titania Tjandrawati Nugroho

Univ. Riau

PENINGKATAN KEMAMPUAN ANTI-OKSIDAN OLEH PROSES TRANSGLIKOSILASI ENZIMATIS EKSTRAK KULIT MANGGIS

17 15.40 - 15.50

K-153

Muharni

Univ. Sriwijaya

STANDARDIZATION OF EXTRACTS ETHYL ACETATE ENDHOPHYTIC FUNGUS ASPERGILLUS SP OF KUNYIT PUTIH (CURCUMA ZEODARIA)

18 15.50 - 16.00

K-109

Warsito

Univ. Brawijaya

19 16.00 - 16.10

K-180

Fitrya

Univ. Sriwijaya

20 16.10 - 16.20

K-115

Yusnelti

Univ. Jambi

21 16.20 - 16.30

K-162

Rurini Retnowati

Univ. Brawijaya

AKTIVITAS ANTIOKSIDAN DAN ANTIMIKROBA MINYAK JERUK PURUT (CITRUS HYSTRIX DC.) DAN KOMPONEN UTAMANYA ISOLASI SENYAWA FENOLAT DARI MIKROBA ENDOFITIK ASPERGILLUS NIGER PADA AKAR TUMBUHAN TUNJUK LANGIT (HELMINTHOSTACHYS ZEYLANICA (LINN) HOOK) TEST THE ANTIOXIDANT ACTIVITY OF THE EXTRACT OF THE FRUIT SHOREA SUMATRANA METHOD OF 1,1-DIPHENYL-2-PICRYLHYDRAZYL (DPPH) AKTIVITAS FREE RADICAL SCAVENGER (FRS) MINYAK ATSIRI BUNGA KENANGA (CANANGA ODORATA)


v

Jadwal Parallel Session Kelompok Kimia

KIMIA: RUANG 2 No

Waktu

No Reg.

Pemakalah

Asal Instansi Univ. Tanjungpura Univ. Tanjungpura

Judul Makalah PERBANDINGAN KOMPONEN KIMIA MINYAK JERUK HASIL DISTILASI DAN FERMENTASI MENGGUNAKAN FUSARIUM OXYFARUM

1

13.00 - 13.10

K-118

Afghani Jayuska

2

13.10 - 13.20

K-122

Ari Widiyantoro

3

13.20 - 13.30

K-126

Binawati Ginting

Univ. Syiah Kuala

4

13.30 - 13.40

K-129

Edi Priyo Utomo

Univ. Brawijaya

5

13.40 - 13.50

K-130

Elfita

Univ. Sriwijaya

6

13.50 - 14.00

K-138

Harizon

Univ. Jambi

7

14.00 - 14.10

K-139

Harlia

Univ. Tanjungpura

8

14.10 - 14.20

K-146

Lenny Anwar

Univ. Riau

9

14.20 - 14.30

K-150

Mai Efdi

Univ. Andalas

10 14.30 - 14.40

K-116

Zulhadjri

Univ. Andalas

11 14.40 - 14.50

K-154

Neni Trimedona

Politeknik Pertanian Negeri Payakumbuh

AKTIVITAS SITOTOKSIK EKSTRAK HERBA GENUS LYGODIUM TERHADAP SEL HELA AKTIVITAS SITOTOKSIK FRAKSI TOTAL FLAVONOID DAUN PALA (MYRISTICA FRAGRANS HOUTT) DENGAN METODE BRINE SHRIMP LETHALITY (BSLT) PROFILING ON SECONDARY METABOLITE OF THE FLAVONOID WHICH IS SYNTHESIZED IN THE TISSUE CULTURE OF CALLUS, CELL SUSPENSION, AND ROOT OF KACANG TUNGGAK (VIGNA UNGUICULATA) STUDI POTENSI MINYAK JAMUR DARI JAMUR ENDOFITIK SEBAGAI SUMBER BAHAN BAKU BIODISEL ANTIBACTERIAL BIPHENYLS FROM THE BARK SONNERATIA CASEOLARIS (LYTHRACEAE) IDENTIFIKASI STEROID DARI FRAKSI N-HEKSANA PADA SPONS CALLYSPONGIA SP ASAL PERAIRAN PULAU LEMUKUTAN KALIMANTAN BARAT A LABDANE-TYPE DITERPENOID: AN ANTIBACTERIAL COMPOUND FROM VITEX PUBESCENSV VAHL. STEM BARK ISOLASI DAN KARAKTERISASI STRUKTUR TRITERPENOID DARI DAUN AGLAIA ODORATA LOUR SINTESIS DAN ANALISIS STRUKTUR SENYAWA AURIVILLIUS BERLAPIS EMPAT, PBBI3.5ND0.5TI4-XMNXO15 TARAXERONE DARI KULIT BATANG MATOA (POMETIA PINNATA, FORST & FORST) DAN AKTIVTAS SITOTOKSIK TERHADAP SEL MURIN LEUKIMIA P388

12 14.50 - 15.00

K-155

Nurhamidah

Univ. Bengkulu

KARAKTERISASI SENYAWA Î²-AMYRIN PALMINTAT DARI BUAH FICUS AURATA (MIQ.) SERTA PENGUJIAN AKTIFITAS ANTIBAKTERI

13 15.00 - 15.10

K-142

Heni Yohandini

Univ. Sriwijaya

14 15.10 - 15.20

K-182

Leida Neti Mulyani

Univ. Sriwijaya

15 15.20 - 15.30

K-156

Pasar Maulim Silitonga

Univ. Negeri Medan

16 15.30 - 15.40

K-161

Rahmiwati Hilma

17 15.40 - 15.50

K-165

Samuel Herianto

18 15.50 - 16.00

K-29

Yuli Yetri

19 16.00 - 16.10

K-44

Gustini Syahbirin

20 16.10 - 16.20

K-184

Dede Sukandar

Univ. Muhammadiyah Riau Univ. Sumatera Utara Politeknik Negeri Padang Institut Pertanian Bogor UIN Jakarta

SKRINING DAN OPTIMASI PRODUKSI ENZIM AMILASE DARI BAKTERI TERMOFILIK ISOLAT SUMBER AIR PANAS TANJUNG SAKTI ANTIOXIDANT ACTIVITY BY DPPH ASSAY OF ETHANOLIC EXTRACT AND ESSENTIAL OIL OF GELAM TIKUS (MELALEUCA LEUCADENDRA VAR. MINOR (SM.) DUTHIE) EFEKTIFITAS BERBAGAI METODE SUPLEMENTASI PIRIDOKSIN MENGOPTIMALISASI PRODUKSI IMMUNOGLOBULIN Y (IGY) KUNING TELUR AYAM ANTIBACTERIAL, ANTIFUNGAL AND ANTIDIABETIC ACTIVITIES OF (DIMOCARPUS LONGAN) FRUIT SKIN EXTRACT THE COMBINATION OF TAPIOCA AND TOFU DREGS AS SUBSTRATE IN PRODUCING YEAST FROM ISOLATE OF HIBISCUS LEAF PENGARUH INHIBITOR EKSTRAK KULIT BUAH KAKAO (THEOBROMA CACAO) TERHADAP LAJU KOROSI BAJA LUNAK DALAM MEDIA GARAM ALKALOID FROM CHLOROFORM FRACTION POND APPEL (ANNONA GLABRA) LEAF EXTRACT IDENTIFIKASI STRUKTUR SENYAWA ANTIDIABETES DARI EKSTRAK ETIL ASETAT BIJI NAMNAM (CYNOMETRA CAULIFLORA L.)

KIMIA: RUANG 3 No

Waktu

No Reg.

Pemakalah

Asal Instansi STIF Bhakti Pertiwi Palembang Univ. Negeri Padang

1

13.00 - 13.10

K-1

Ade Arinia Rasyad

2

13.10 - 13.20

K-7

Ananda Putra

3

13.20 - 13.30

K-11

Anna Roosdiana

Univ. Sriwijaya

4

13.30 - 13.40

K-27

Diah Tri Utami

Univ. Jambi

5

13.40 - 13.50

K-177

Zulkarnain Chaidir

Univ. Andalas Padang

6

13.50 - 14.00

K-40

Febriani

Univ. Syiah Kuala

vi


Judul Makalah FORMULASI DAN UJI AKTIVITAS ANTI BAKTERI MASKER PEEL OFF SERBUK GETAH PEPAYA MUDA DAN MADU HITAM SYHTHESIS AND CHARACTERIZATION BACTERIAL CELLULOSE GEL FROM BENGKUANG (PACHYRRHIZUS EROSUS URBAN) EXTRACT PENGARUH PEMBERIAN SARI DAUN CINCAU (PREMNA OBLONGIOFOLIA MERR ) TERHADAP KADAR TRIGLISERIDA DAN MALONALDIALDEHIDA (MDA)TIKUS HIPERLIPIDEMIA (RATTUS NORVEGICUS ) AKTIVITAS ANTIMIKROBA DAN BIOAUTOGRAFI EKSTRAK ETANOL DAUN SIMPUR (DILLENIA SP.) TERKARAKTERISASI TERHADAP STAPHYLOCOCCUS AUREUS OPTIMASI PERTUMBUHAN MIKROALGA CHLORELLA VULGARIS UNTUK MENINGKATKAN KADAR GLUKOSA SEBAGAI BAHAN BAKU BIOETANOL THERMOSTABLE ENZYMES FROM JABOI SABANG ISOLAT : EFFECT OF FERMENTATION TEMPERATURE

Jadwal Parallel Session Kelompok Kimia 7

14.00 - 14.10

K-41

Fuldiaratman

Univ. Jambi

8

14.10 - 14.20

K-47

Hazli Nurdin

STF Indonesia

9

14.20 - 14.30

K-61

Khairan

Univ. Syiah Kuala

10 14.30 - 14.40

K-68

Madyawati Latief

Univ. Jambi

11 14.40 - 14.50

K-76

Muhaimin

Univ. Jambi

12 14.50 - 15.00

K-78

Muhammad Fikriansyah

Univ. Negeri Medan

13 15.00 - 15.10

K-96

Rodiansono

Univ. Lambung Mangkurat

PEMANFAATAN LIMBAH KULIT BUAH JENGKOL (PITHECELLOBIUM JIRINGA (JACK) PRAIN.) DALAM PEMBUATAN BIO-BRIKET THE BIOLOGICAL ACTIVITY TEST OF Î² SITOSTEROL ISOLATED FROM PALM OIL WASTE AKTIVITAS BEBERAPA EKSTRAK PELARUT BAWANG PUTIH (ALLIUM SATIVUM LINN) TERHADAP AKTIVITAS CANDIDA ALBICANS PENGARUH PH DAN SUHU TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL KULIT RANTING KAYU MANIS (CINNAMOMUM BURMANI) AKTIVITAS ANTIJAMUR EUSIDERIN A (EUSIDEROXYLON ZWAGERY) TERHADAP RHIZOCTONIA SOLANI DAN GLIOCLADIUM FIMBRIATUM PENGARUH PEMBERIAN EKSTRAK BIJI PEPAYA (CARICA PAPAYA) TERHADAP PENINGKATAN KEMATIAN CACING GELANG BABI (ASCARIS SUUM, GOEZE) IN VITRO DIRECT CONVERSION OF SUCROSE INTO G-VALEROLACTONE OVER NISN ALLOY CATALYSIS

14 15.10 - 15.20

K-98

Sasangka Prasetyawan

Univ. Brawijaya

CHARACTERIZATION OF BACILLUS SUBTILISÂ€™S PECTINASE AND ITÂ€™S APPLICATION FOR PAPER BLEACHING PROCESS

15 15.20 - 15.30

K-104

Sutrisno

Univ. Brawijaya

16 15.30 - 15.40

K-111

Yandri A.S.

Univ. Lampung

17 15.40 - 15.50

K-119

Andi Arif Setiawan

Univ. PGRI Palembang

18 15.50 - 16.00

K-131

Elida Mardiah

Univ. Andalas

19 16.00 - 16.10

K-178

Julinar

Univ. Sriwijaya

ISOLASI MIKROALGA DARI PERAIRAN AIR TAWAR DIALIRAN SUNGAI DAERAH LUBUK MINTURUN YANG BERPOTENSI UNTUK PRODUKSI BIODIESEL PENENTUAN KONDISI OPTIMUM AKTIVITAS ENZIM XILANASE TERMOSTABIL DARI BAKTERI ANOXYBACILLUS RUPIENSIS

20 16.10 - 16.20

K-174

Yulianis

TIKES Harapan Ibu

UJI AKTIVITAS SITOTOKSIK FRAKSI DAUN PEDADA (SONNERATIA CASEOLARIS) DENGAN METODE BRINE SHRIMP LETHALITY

PENGARUH PENAMBAHAN CA2+DAN ZN2+ TERHADAP AKTIVITAS XILANASE HASIL ISOLASI DARI TRICHODERMA VIRIDE PENINGKATAN STABILITAS ENZIM SELULASE DARI BAKTERI ISOLAT LOKAL BACILLUS SUBTILIS ITBCCB148 DENGAN PENAMBAHAN SORBITOL UJI TOKSISITAS ION LOGAM PB2+ TERHADAP BERBAGAI JENIS IKAN

KIMIA: RUANG 4 No

Waktu

No Reg.

Pemakalah

1

13.00 - 13.10

K-6

Alizar Ulianas

2

13.10 - 13.20

K-17

Budhi Oktavia

3

13.20 - 13.30

K-21

Darjito

Asal Instansi Univ. Negeri Padang Univ. Negeri Padang Univ. Brawijaya

Judul Makalah

4

13.30 - 13.40

K-100

Suratmo

Univ. Brawijaya

PENGGUNAAN SONIKASI DALAM SINTESIS METIL NITROSALISILAT DARI KOMPONEN UTAMA MINYAK GANDAPURA

5

13.40 - 13.50

K-24

Deswati

Univ. Andalas

DESIGN EKPERIMEN UNTUK OPTIMASI PENENTUAN TEMBAGA DALAM AIR SECARA VOLTAMMETRI STRIPPING ADSORPTIF

6

13.50 - 14.00

K-145

Ismarti

Univ. Riau Kepulauan

7

14.00 - 14.10

K-25

Desy Kurniawati

Univ. Negeri Padang

8

14.10 - 14.20

K-30

Zilfa

Univ. Andalas

9

14.20 - 14.30

K-32

Dyah Fitriani

10 14.30 - 14.40

K-33

Edi Nasra

Univ. Bengkulu Univ. Negeri Padang

11 14.40 - 14.50

K-34

Elva Yasmi Amran

Univ. Riau

12 14.50 - 15.00

K-35

Elvina Dhiaul Iftitah

Univ. Brawijaya

STUDI KOMPLEKS ASSOSIASI HG(II) MENGGUNAKAN KI DAN METHYL GREEN KEMAMPUAN CAMPURAN GAMBUT DAN SEKAM PADI UNTUK MENGURANGI TINGKAT PENCEMAR ORGANIK (BOD, COD) DARI AIR BUANGAN TPA SAMPAH MUARA FAJAR KODYA PEKANBARU KARAKTERISTIK SENYAWA ISOPULEGOL TERKAPSULASI SERTA UJI AKTIVITASNYA SEBAGAI ANTI OKSIDAN DAN ANTI BAKTERI

13 15.00 - 15.10

K-10

Univ. Brawijaya

BIOSENSOR UNTUK MENDETEKSI RESIDU PESTISIDA ORGANOFOSFAT

14 15.10 - 15.20

K-48

Ani Mulyasuryani Helmi Auliyah Istiqomah

Univ. Brawijaya

PEMBUATAN BAHAN BAKU MEMBRAN BERBASIS ESTER DARI SELULOSA MIKROBIAL SECARA ENZIMATIS

MONOSODIUM GLUTAMAT OPTICAL SENSOR DEVELOPMENT AS FOOD QUALITY CONTROL ANALISIS KANDUNGAN BEBERAPA ION PADA AIR SUNGAI DI KOTA PADANG MENGGUNAKAN HIGH ION CHROMATOGRAPHY (HIC) ADSORPSI ION PB(II) MENGUNAKAN ADSORBEN KITIN TERESTERIFIKASI

DISSIPASI RESIDU BETA-SIFLUTRIN PADA KANGKUNG (IPOMOEA REPTANS) PENYERAPAN LOGAM CU(II) DALAM LARUTAN MENGGUNAKAN BIJI DAN KULIT BUAH LENGKENG (EUPHORIA LOGAN LOUR)DENGAN METODA KOLOM DAYA ADSORPSI ZEOLIT ALAM CLIPNOTILOLIT-CA YANG DIAKTIVASI DENGAN PEMANASAN TERHADAP PB(II) IMMOBILIZATION OF GALLIC ACID ON MG/AL HYDROTALCITE


vii


15 15.20 - 15.30

K-49

Hendrawati

UIN Syarif Hidayatullah Jakarta

16 15.30 - 15.40

K-51

Heriyanti

Univ. Jambi

17 15.40 - 15.50

K-52

Hermin Sulistyarti

Univ. Brawijaya

18 15.50 - 16.00

K-53

Hira Helwati

Univ. Syiah Kuala

K-158

Poedji Loekitowati Hariani

Univ. Sriwijaya

19 16.00 - 16.10

PEMBUATAN DAN KARAKTERISASI PLASTIK RAMAH LINGKUNGAN BERBAHAN DASAR SERAT ONGGOK, KITOSAN DAN POLIVINIL ALKOHOL (SYNTHESIS AND CHARACTERIZATION OF DEGRADABLE PLASTIC BASED ON ONGGOK FIBER, CHITOSAN AND POLYVINYL ALCOHOL) ADSORPSI MINYAK DARI SAMPAH PLASTIK POLIPROPILEN MENGGUNAKAN CAMPURAN BENTONIT/KARBON AKTIF YANG TERAKTIVASI KOH METODE SPESIASI KROMIUM MENGGUNAKAN OKSIDATOR HIPOKLORIT DAN PERSULFAT SECARA SPEKTOFOTOMETRI EDIBLE PACKAGING FROM JANENG (DISCOREA HISPIDA) STARCHCHITOSAN BLEND FILM PREPARATION OF METHYL ESTER SULFONATE FROM KETAPANG SEED OIL METHYL ESTER AS SURFACTANT

KIMIA: RUANG 5 No

Waktu

No Reg.

Pemakalah

Asal Instansi

Judul Makalah PENENTUAN ASAM ORGANIK ( ASAM ASETAT, ASAM BENZOAT) TANAH GAMBUT YANG DIBERI FLY ASH DENGAN GAS CHROMATOGRAPHY MASS SPECTROSCOPY (GC-MS) STUDI PERANAN GUGUS KARBOKSILAT PADA BIOSORPSI ION CR(VI) OLEH BIOMASSA CLADOPHORA FRACTA

1

13.00 - 13.10

K-93

Rini

Univ. Riau

2

13.10 - 13.20

K-94

Riski Dwimalida Putri

Univ. Jambi

3

13.20 - 13.30

K-100

Suratmo

Univ. Brawijaya

4

13.30 - 13.40

K-63

Lidia

5

13.40 - 13.50

K-88

Rahmi

6

13.50 - 14.00

K-82

Noer Komari

7

14.00 - 14.10

K-70

Marham Sitorus

8

14.10 - 14.20

K-71

Maria Erna

9

14.20 - 14.30

K-74

Mawardi

10 14.30 - 14.40

K-75

Maya Sari Ananda Pohan

PENGGUNAAN SONIKASI DALAM SINTESIS METIL NITROSALISILAT DARI KOMPONEN UTAMA MINYAK GANDAPURA PENGARUH PENINGKATAN KONSENTRASI PVP (POLIVINIL PIROLIDON) STIF Bhakti Pertiwi K90 TERHADAP LAJU DISOLUSI KETOKONAZOL DALAM SISTEM Palembang DISPERSI PADAT ADSORBSI FE(III) MENGGUNAKAN SISTEM ADSORBSI KOLOM DENGAN Univ. Syiah Kuala BAHAN ISIAN KRISTOBALIT BERLAPISKAN KHITOSAN BERIKATAN SILANG Univ. Lambung KANDUNGAN TIMBAL PADA KIJING (PILSBRYOCONCHA EXILIS) SUNGAI RIAM KANAN KALIMANTAN SELATAN Mangkurat MODIFIKASI KROMATOGRAFI KOLOM SILIKAGEL UNTUK MEMURNIKAN Univ. Negeri ASAM LINOLEAT TERKONJUGASI HASIL SINTESIS RISISINOLEAT MINYAK Medan JARAK SIFAT TERMODINAMIK DAN KARAKTERISASI INHIBISI KOROSI NANOPARTIKEL KITOSAN PADA PERMUKAAN BAJA LUNAK DALAM MEDIA AIR Univ. Riau GAMBUT Univ. Negeri PENGARUH ION LOGAM CD (II) TERHADAP ADSORBSI ION LOGAM PB (II) DENGAN ADSORBEN TANAH NAPA Padang Univ. Gadjah STUDI ADSORBSI-DESORBSI ANION FOSFAT PADA ZEOLIT TERMODIFIKASI CTAB Mada

11 14.40 - 14.50

K-125

Bambang Yudono

Univ Sriwijaya

12 14.50 - 15.00

K-124

Armini Hadriyati

13 15.00 - 15.10

K-167

Surya Lesmana

14 15.10 - 15.20

K-137

Hamzar Suyani

Univ. Andalas

15 15.20 - 15.30

K-144

Indrawati


16 15.30 - 15.40

K-143

Hermansyah Aziz

Univ. Andalas

17 15.40 - 15.50

K-149

Lili Andriani

Stikes Harapan Ibu Jambi

18 15.50 - 16.00

K-159

Rahmadini Syafri

Univ. Muhammadiyah Riau

19 16.00 - 16.10

K-179

Dedy Rohendi

Univ. Sriwijaya

20 16.10 - 16.20

K-136

Fatma

Univ. Sriwjaya

viii


Stikes Harapan Ibu Univ. Sumatera Utara

BIOSURFAKTANDARIPSEUDOMONAS PELI PADA BERBAGAI SUMBER KARBON SEBAGAI AGENANTI KERAKUNTUK PIPA MINYAK BUMI ANALISIS PEWARNA RHODAMIN B PADA LIPSTIK YANG BEREDAR DI PASAR TRADISIONAL KOTA JAMBI STUDY OF MANGOSTEEN RIND AS RAW MATERIALS IN PRODUCING BIOETHANOL USING HYDROLYSIS AND FERMENTATION METHODS ANALISIS KUALITAS AIR PASCA TERJADINYA UP WELLING PADA LOKASI PEMELIHARAAN IKAN KARAMBA PERBANDINGAN METODE DPPH DAN FRAP MODIFIKASI PADA PENENTUAN KANDUNGAN ANTIOKSIDAN TOTAL DALAM SAMPEL BIT DYE-SENSITIZED SOLAR CELLS USING DYE EXTRACTED FROM MALE FLOWER OF CURED BANANA (MUSA X PARADISIACA L.) IDENTIFIKASI DAN PENETAPAN KADAR METIL PARABEN DALAM SEDIAAN KRIM PEMUTIH YANG BEREDAR D I KOTA JAMBI MENGGUNAKAN METODA HPLC SIFAT MEKANIK KOMPOSIT NR/HDPE DIPERKUAT PENGISI SEKAM PADI TERMODIFIKASI LENR PEMBUATAN DAN KARAKTERISASI KATALIS PT-CO/C DAN PT-NI/C UNTUK PEMFC DENGAN METODE ELEKTRODEPOSISI STUDY AND OPTIMIZATION OF PHENOL ADSORPTION USING ACTIVATED CARBON FROM GELAM WOOD (MELALEUCA LEUCADENDRON LINN)


KIMIA: RUANG 6 No

Waktu

No Reg.

Pemakalah

Asal Instansi

Judul Makalah

1

13.00 - 13.10

K-157

Pepi Helza Yanti

Univ. Riau

2

13.10 - 13.20

K-163

Rusvirman Muchtar

Univ. Jenderal Achmad Yani

3

13.20 - 13.30

K-164

Salmariza. Sy

Univ. Andalas

4

13.30 - 13.40

K-166

Sri Wardhani

Univ. Brawijaya

5

13.40 - 13.50

K-173

Widia Purwaningrum

Univ. Sriwijaya

6

13.50 - 14.00

K-175

Yulizar Yusuf

Univ. Andalas

THE EFFECT OF PH ON SYNTHESIS OF HYDROXYAPATITE FROM GELOINA COAXANS SHELL PENENTUAN KANDUNGAN LOGAM BERAT DALAM AIR SUNGAI CIBANJARAN PASCA LETUSAN GUNUNG GALUNGGUNG TASIKMALAYA JAWA BARAT PENGEMBANGAN ADSORBEN DARI LIMBAH ACTIVATED SLUDGE INDUSTRI KARET REMAH UNTUK MEREDUKSI ZN (II) PUPUK FE LEPAS LAMBAR DARI LUMPUR SIDOARJO (KAJIAN KADAR ZEOLIT DAN KONSENTRASI ASAM ASETAT) THE INFLUENCE OF DOP AND ACETOPHENON PLASTICIZER TO SENSITIVITY AND SELECTIVITY OF CHITIN MEMBRANE ION SELECTIVE ELECTRODE ZN PENGARUH BEBERAPA PERLAKUAN TERHADAP PENGURANGAN KADAR FORMALIN PADA TAHU IKAN YANG BEREDAR DI PASAR PADANG

7

14.00 - 14.10

K-168

Surya Lubis

Univ. Syiah Kuala

NATURAL ACEH BENTONITE AND DERIVED TIO2 BENTONITE USED FOR PHOTOCATALYTIC DEGRADATION OF INDIGO CARMINE

8

14.10 - 14.20

K-127

Charlena

9

14.20 - 14.30

K-43

Gusti Aulia Nasution

10 14.30 - 14.40

K-54

Iis Siti Jahro

11 14.40 - 14.50

K-55

Indang Dewata

12 14.50 - 15.00

K-60

Julinawati

Univ. Syiah Kuala

13 15.00 - 15.10

K-64

Lince Muis

Univ. Jambi

14 15.10 - 15.20

K-67

Univ. Brawijaya

15 15.20 - 15.30

K-72

16 15.30 - 15.40

K-92

M. Misbah Khunur Martina Asti Rahayu Rindang Kembar Sari

17 15.40 - 15.50

K-117

18 15.50 - 16.00

Institut Pertanian Bogor Univ. Negeri Medan Univ. Negeri Medan Univ. Negeri Padang

HYDROXYAPATITE-CHITOSAN COMPOSITE COATING ON TIAL ALLOY ELECTROPHORETIC DEPOSITION METHOD KEANEKARAGAMAN DAN KANDUNGAN KIMIA TAMARILLO SEBAGAI BUAH ENDEMIK SUMATERA UTARA THE ZEOLIT X FROM LIGHT FACTION OF NON MAGNETIC ASH RESIDUAL BURNING OF PALM OIL SHELLS COMPLEXATION STUDY OF NH3 WITH CO2+ FOR AMMONIA ANALYSIS IN WATER IDENTIFIKASI MINERAL BATU GIOK TAKENGON ACEH MENGGUNAKAN METODA X- RAY DIFFRACTION (XRD) PERFORMANCE DAN KARAKTERISASI ZEOLIT DARI FLY ASH BATU BARA DENGAN METODE PELEBURAN HIDROTERMAL PEMBUATAN KRISTAL TUNGGGAL CUO PADA GEL METASILIKAT

IAIN Bukittinggi

SINTESIS DAN KARAKTERISASI POLYSALISILIC ACID-FORMALDEHYDE UNTUK ADSORBSI ION LOGAM CD(II) POTENSI MINERAL BATUAN TAMBANG BUKIT 12 DENGAN METODE XRD, XRF DAN AAS

Admin Alif


PENGARUH SUHU PEMBAKARAN TERHADAP PERFORMANCE TIO2/C BERPENDUKUNG KERAMIK SEBAGAI ELEKTRODA SUPERKAPASITOR

K-133

Evi Maryanti

Univ. Bengkulu

19 16.00 - 16.10

K-147

Lia Anggresani

Univ. Andalas

20 16.10 - 16.20

K-108

Uce Lestari

Univ. Jambi

Univ. Jambi

SYNTHESIS OF ZNO NANOPARTICLES IN AQUAEOUS EXTRACTS OF HIBISCUS ROSA SINENSIS AND ALLIUM SATIVUM PREPARATION OF CRYPTOMELANE NANOMATERIALS USING MICROWAVE AND OVEN PROCESS FORMULASI SUSPENSI ANTASIDA DENGAN ZAT PENSUSPENSI METHOCEL E 15 DAN VEEGUM HV

KIMIA: RUANG 7 No

Waktu

No Reg.

Pemakalah

Asal Instansi

1

13.00 - 13.10

K-5

Ali Amran

Univ. Negeri Padang

2

13.10 - 13.20

K-12

Asdim

Univ. Bengkulu

3

13.20 - 13.30

K-22

Deni Agus Triawan

Univ. Bengkulu

4

13.30 - 13.40

K-26

Diah Riski Gusti

Univ. Jambi

5

13.40 - 13.50

K-28

Yetria Rilda

Univ. Andalas

6

13.50 - 14.00

K-36

Emrizal Mahidin Tamboesai

Univ. Riau

7

14.00 - 14.10

K-37

Eni Widiyati

Univ. Bengkulu

Judul Makalah SOLUBILITY OF METHYL RED AND METHYLENE BLUEIN MICROEMULSIONS AND LAMELLAR LIQUID CRYSTALS OF WATER, CATIONIC SURFACTANT AND HYDROCARBON GREEN SYNTHESIS NANOPARTIKEL SNO2 DAN POTENSINYA SEBAGAI FOTOELEKTRODA PADA DYE-SENSITIZED SOLAR CELLS (DSSCS) EFFECT OF POLYVINYL ALCOHOL (PVA) ON PREPARATION OF PVA/CHITOSAN AND PVA/MGAL-LDH/CHITOSAN COMPOSITE BEADS ADSORPTION ISOTHERMS AND THERMODYNAMICS ON MILD STEEL CORROSION INHIBITION BY CASSAVA ( MANIHOT ESCULENTA) LEAF OF WATER EXTRACT EFEK PELAPISAN NANOKLUSTER TIO2-SIO2 TERHADAP SIFAT SELFCLEANING KATUN TEKSTIL DENGAN CROSS LINK ASAM AKRILAT PENGGUNAAN PARAMETER GEOKIMIA MOLEKULAR UNTUK MENENTUKAN KORELASI MINYAK BUMI BLOK BANGKOÂ€“ROKAN HILIR DENGAN MINYAK BUMI DURI-BENGKALIS, RIAU PREPARATION AND CHARACTERIZATION OF COCONUT OIL EMULSIONS USING DIFFERENT TYPES OF BASES


ix

Jadwal Parallel Session Kelompok Kimia 8

14.10 - 14.20

K-56

Intan Lestari

Univ. Jambi

9

14.20 - 14.30

K-57

Irfan Gustian

Univ. Bengkulu

10 14.30 - 14.40

K-85

Olly Norita Tetra

Univ. Andalas

11 14.40 - 14.50

K-87

Rahadian Zainul

Univ. Negeri Padang

12 14.50 - 15.00

K-97

Rudy Situmeang

Univ. Lampung

13 15.00 - 15.10

K-105

Sutrisno

Univ. Jambi

14 15.10 - 15.20

K-128

Diah Mastutik

Univ. Jambi

15 15.20 - 15.30

K-135

Fahma Riyanti

Univ. Sriwijaya

16 15.30 - 15.40

K-152

Mimpin Ginting

Usu Medan

17 15.40 - 15.50

K-169

Syukri Arief

Univ. Andalas

STUDIES KINETIC, EQUILIBRIUM AND THERMODYNAMIC ON BIOSORPTION ZN(II) FROM AQUEOUS SOLUTION BY ALGINATE IMMOBILIZATION DURIAN (DURIO ZIBETHINUS) SEED SINTESIS MEMBRAN PENGHANTAR PROTON BERBASISKAN POLISULFON DENGAN TINJAUAN PENGARU PELARUT PENGARUH ELEKTROLIT H3PO4 TERHADAP SIFAT LISTRIK ELEKTRODA EDLC DARI KARBON TEMPURUNG BIJI KARET KINERJA PANEL SURYA CU2O-CUO/AL PADA LAMPU NEON DENGAN SINAR UV NANODOT CATALYST S/TIO2 : PHOTOCATALYTIC DEGRADATION OF METANIL YELLOW AZO DYE KARAKTERISTIK MINYAK DARI SAMPAH PLASTIK POLIPROPILEN DAN PEMANFAATANNYA SEBAGAI BAHAN BAKAR ALTERNATIF TRANSESTERFIKASI MINYAK JELANTAH KELAPA SAWIT MENJADI BIODIESEL MENGGUNAKAN KATALIS ZEOLIT-Y MELALUI PROSES ESTERIFIKASI KARAKTERISASI CAMPURAN SOLAR DENGAN BIODIESEL YANG DIBUAT DARI MINYAK BIJI KETAPANG (TERMINALIA CATAPPA LINN) MENGGUNKAN KATALIS NAOH SINTESIS BASA SCHIFF DARI HASIL KONDENSASI SINAMALDEHIDA DENGAN ETILENDIAMIN DAN FENILHIDRAZIN SERTA PEMANFAATANNYA SEBAGAI INHIBITOR KOROSI PADA LOGAM SENG SYNTHESIS OF ZINC FERRITE (ZNFE2O4) NANOCRYSTALS: COMPARISON OF SOL-GEL AND HYDROTHERMAL METHODS

18 15.50 - 16.00

K-170

Tengku Rachmi Hidayani

Politeknik Ati Padang

GRAFTING DEGREES DETERMINATION FROM POLYPROPYLENE WITH MALEIC ANHYDRIDE

19 16.00 - 16.10

K-172

Tri Kurnia Dewi

Univ. Sriwijaya

EFFECT OF WATER FLOW RATE AND HEIGHT BEDOF ZEOLITE ATNEUTRALIZATIONOF ZEOLITE CATALYST BYFLUIDIZATION METHOD

20 16.10 - 16.20

K-112

Yeni Stiadi

Univ. Andalas

21 16.20 - 16.30

K-183

Almunady T. P

Univ. Sriwijaya

POTENTIAL OF KEMANGI LEAVES (OCIMUM BASILICUM L.) AS CORROSION INHIBITOR STEEL ST.37 IN HYDROCHLORIC ACID MEDIUM KAJIAN TEORI HEPOTESIS AVOGADRO

KIMIA: RUANG 8 No

Waktu

No Reg.

Pemakalah

Asal Instansi Univ. Negeri Padang

Judul Makalah

1

13.00 - 13.10

K-9

Andromeda

2

13.10 - 13.20

K-13

Asmadi M.Noer

Univ. Riau

3

13.20 - 13.30

K-14

Axel Deby Cornellia Arifianty

Univ. Negeri Medan

4

13.30 - 13.40

K-15

Betty Holiwarni

Univ. Riau

5

13.40 - 13.50

K-16

Biuti Fourtuna

Univ. Negeri Medan

6

13.50 - 14.00

K-23

Descey Natalia

Univ. Negeri Medan

7

14.00 - 14.10

K-38

Erviyenni

Univ. Riau

8

14.10 - 14.20

K-39

Fatria Dewi

Univ. Jambi

PENGEMBANGAN LEMBAR KERJA SISWA (LKS) EKSPERIMEN BERBASIS GUIDED INQUIRY UNTUK MATERI LAJU REAKSI TINGKAT SMA/MA PENGEMBANGAN LEMBAR KERJA MAHASISWA (LKM) PADA MATAKULIAH BAHASA INGGRIS KIMIA (ENGLISH FOR SPECIFIC PURPOSE, ESP-KIMIA) PADA PRODI KIMIA, FKIP-UR EFEKTIVITAS METODE STUDENT CENTERED LEARNING BERORIENTASI GREEN CHEMISTRY PENGEMBANGAN PERANGKAT PEMBELAJARAN PEMAKNAAN SEBAGAI STRATEGI MEMBANGUN SISWA KOMPREHENSIF PADA PEMBELAJARAN KIMIA POKOK BAHASAN STRUKTUR ATOM SEKOLAH MENENGAH ATAS IMPLEMENTASI PEMBELAJARAN QUANTUM DENGAN MODUL UNTUK MENINGKATKAN PENCAPAIAN SISWA DALAM PEMBELAJARAN HIDROKARBON THE IMPLEMENTATION OF COOPERATIVE LEARNING MODEL TOWARD STUDENTS' LEARNING OUTCOMES IN LEARNING COLLOIDAL SYSTEM TOPIC PENGEMBANGAN PANDUAN PRAKTIKUM IPA-KIMIA SMP/MTS BERBASIS LINGKUNGAN ANALISIS KETERLAKSANAAN CTL DALAM PBL SERTA HUBUNGANNYA DENGAN HASIL BELAJAR SISWA SMA DALAM MATERI ASAM BASA

9

14.20 - 14.30

K-45

Hardeli

Univ. Negeri Padang

CHEMICAL LEARNING MEDIA BASED CHEMISTRY TRIANGLE USING ANDROID APPLICATION

10 14.30 - 14.40

K-50

Herdini

Univ. Riau

PENINGKATAN AKTIVITAS DAN HASIL BELAJAR MAHASISWA DENGAN PENERAPAN TUTOR SEBAYA PADA MATA KULIAH KIMIA ORGANIK 1

11 14.40 - 14.50

K-59

Jamalum Purba

12 14.50 - 15.00

K-62

Latisma Dj.

13 15.00 - 15.10

K-66

M. Dwi Wiwik Ernawati

Univ. Jambi

14 15.10 - 15.20

K-69

Manihar Situmorang

Univ. Negeri Medan

x


Univ. Negeri Medan Univ. Negeri Padang

INOVASI PEMBELAJARAN BERBASIS PROYEK UNTUK PENGAJARAN SENYAWA ENOLAT PADA MATA KULIAH KIMIA ORGANIK LANJUT IMPLEMENTASI MEDIA PEMBELAJARAN KIMIA BERORIENTASI CHEMISTRY TRIANGLE DI SMAN SUMATERA BARAT ENFORCEABILITY OF DISCOVERY LEARNING MODEL AND ITS EFFECT ON ATTITUDE OF CREATIVE STUDENTS IN CHEMISTRY LEARNING AT CLASS XI MIA SMAN 2 OF JAMBI PENGEMBANGAN BAHAN AJAR KIMIA INOVATIF DAN INTERAKTIF BERBASIS MULTIMEDIA UNTUK PENGAJARAN SENYAWA AROMATI

Jadwal Parallel Session Kelompok Kimia 15 15.20 - 15.30

K-73

Marudut Sinaga

Univ. Negeri Medan

16 15.30 - 15.40

K-79

Muhammad Haris Effendi

Univ. Jambi

17 15.40 - 15.50

K-83

Nurasiah

Univ. Jambi

18 15.50 - 16.00

K-84

Nurul Fadhilah

Univ. Jambi

19 16.00 - 16.10

K-160

Rahmat Nauli

Univ. Negeri Medan

20 16.10 - 16.20

K-140

Haryanto

Univ. Jambi

INOVASI BAHAN AJAR BERBASIS KONTEKSTUAL DALAM BENTUK ELEKTRONIK (E-BOOK) UNTUK PENGAJARAN SISTEM KESETIMBANGAN KIMIA PENGARUH PEMBERIAN QUIZ PADA PEMBELAJARAN JIGSAW TYPE 4 TERHADAP HASIL BELAJAR KIMIA SISWA DI SMAN 2 TANJAB TIMUR JAMBI PERBANDINGAN KEMAMPUAN BERKOMUNIKASI SISWA PADA PEMBELAJARAN JIGSAW 2 DAN 4 DI SMAN 2 TANJAB TIMUR JAMBI FLAVONOID DARI DAUN CRYPTOCARYA TOMENTOSA (LAURACEAE) DAN SIFAT SITOTOKSIKNYA PENGEMBANGAN PEMBELAJARAN BERBASIS INKUIRI DALAM PENGAJARAN LAJU REAKSI UNTUK MENINGKATKAN KOMPETENSI MAHASISWA DEVELOPMENT OF INTERACTIVE MULTIMEDIA MACROMEDIA FLASH 8 COURSE FOR BASIC CHEMICAL MATERIAL

KIMIA: RUANG 9 No

Waktu

No Reg.

Pemakalah

Asal Instansi Univ. Negeri Padang Univ. Negeri Medan

Judul Makalah DEVELOPING A CHEMISTRY MODULES FOR JUNIOR HIGH SCHOOL ON THE TOPICS CHEMISTRY FOR DAILY LIFE

1

13.00 - 13.10

K-86

Ellizar

2

13.10 - 13.20

K-89

Ramlan Silaban

3

13.20 - 13.30

K-90

Rayandra Asyhar

Univ. Jambi

4

13.30 - 13.40

K-91

Restina Bemis

Univ. Jambi

5

13.40 - 13.50

K-113

Yerimadesi

Univ. Negeri Padang

AN INSPIRING INSTRUCTIONAL SCENARIO FOR BUILDING CHARACTER OF THE 8TH-GRADE STUDENTS THROUGH CHEMISTRY ACTIVATION AND CHARACTERIZATION OF JAMBIÂ€™S CLAY AS ADSORBENT PENGEMBANGAN MODUL KESETIMBANGAN KIMIA BERBASIS PENDEKATAN SAINTIFIK UNTUK KELAS XI SMA/MA

6

13.50 - 14.00

K-95

Roberto Putra Kusuma Hutagaol

Univ. Jambi

DEVELOPMENT STUDENT WORKSHEET BASED MATACOGNITIVE TO IMPROVE THE ABILITY OF CRITICAL THINKING

7

14.00 - 14.10

K-99

Sri Haryati

Univ. Riau

8

14.10 - 14.20

K-110

Wilda Syahri

Univ. Jambi

9

14.20 - 14.30

K-114

Yovy Ardianti

10 14.30 - 14.40

K-120

Ani Sutiani

11 14.40 - 14.50

K-121

Anita Herda

12 14.50 - 15.00

K-132

Elvianna Uli Manihuruk

13 15.00 - 15.10

K-134

F. Eka Safitri

14 15.10 - 15.20

K-151

Miksusanti

Univ. Sriwijaya

15 15.20 - 15.30

K-181

Herlina

Univ. Sriwijaya

16 15.30 - 15.40

K-148

Lidya Novita

Fmipa Univ. Andalas

17 15.40 - 15.50

K-176

Zainal Fanani

Univ. Sriwijaya

18 15.50 - 16.00

K-171

Tetty Kemala

Institut Pertanian Bogor

19 16.00 - 16.10

K-123

Armina Fariani

Univ. Sriwijaya

20 16.10 - 16.20

K-141

Hasmalina Nasution

Univ. Muhammadiyah Riau

Univ. Negeri Medan Univ. Negeri Medan Sma N 1 Muara Bungo Univ. Negeri Medan Sman 1 Indralaya Utara

PENGEMBANGAN LEMBAR KERJA SISWA (LKS) INOVATIF KIMIA REDOKS BERBASIS PROBLEM BASE LEARNING (PBL) UNTUK SISWA SMA

PENGEMBANGAN LEMBAR KERJA MAHASISWA (LKM) BERBASIS INQUIRI PADA MATA KULIAH STRATEGI PEMBELAJARAN KIMIA PENGEMBANGAN MEDIA PEMBELAJARAN KESETIMBANGAN KIMIA BERBASIS MULTIPLE REPRESENTATIF UNTUK MAHASISWA PENDIDIKAN KIMIA FKIP UNIV. JAMBI PENERAPAN TGT (TEAM GAMES LEARNING) DENGAN MIND MAPPING PADA TOPIK ASAM BASA THE DEVELOPMENT OF PROBLEM BASED LEARNING TO IMPROVE STUDENTS COMPETENCY IN PHASE EQUILIBRIUM THE IMPLEMENTATION ENVIRONMENT -BASED LEARNING TO IMPROVE EFFECTIVENESS OF CHEMISTRY LEARNING THE EFFECTIVENESS OF WEB BASED LEARNING MEDIA TO IMPROVING STUDENT ACHIVEMENT ON THE TEACHING OF ACID AND BASE BAHAN AJAR BERBASIS MULTIMEDIA INTERAKTIF PADA MATERI IKATAN KMIA KELAS X DI SEKOLAH MENENGAH ATAS ANTIFUNGAL ACTIVITY AND STABILITY OF COMBINATION THE WATER EXTRACT OF MANGOSTEEN FRUIT HULL (GARCINIA MANGOSTANA. L) AND SECANG WOOD (CAESALPINIA SAPPAN.L) STANDARDISASI DAN UJI AKTIVITAS ANTIBAKTERI EKSTRAK BIJI PALEM PUTRI (ADONIDIA MERRILLII (BECC.) BECC.) TERHADAP STAPHYLOCOCCUS AUREUS DAN ESCHERICHIA COLI EFFICIENCY COMBINATION METHOD OF GREASE TRAP AND MULTI SOIL LAYERING (MSL) FOR DECREASING OF TSS, BOD, COD, OIL AND GREASE CONCENTRATION IN RESTAURANT WASTEWATER PREPARATION AND CHARACTERIZATION OF CR/ACTIVATED CARBON CATALYST FROM PALM EMPTY FRUIT BUNCH ENKAPSULASI IBUPROFEN DENGAN KITOSAN-PEKTIN MENGGUNAKAN METODE GELASI IONIK PROFIL SCFA (SHORT CHAIN FATTY ACID) CAIRAN RUMEN DENGAN PERLAKUAN RANSUM TOTAL MIX RATION SAWIT PADA WAKTU INKUBASI YANG BERBEDA SECARA IN SACCO. DETERMINATION FERMENTATION DETERMINATION SACCHAROMYCES CEREVISIAE FERMENTATION OPTIMUM TIME TOWARDS WATER, PROTEIN AND CRUDE FIBER CONTENTS OF FISH PELETS FROM ORGANIC WASTE


xi

KUMPULAN

ABSTRAK KELOMPOK KIMIA

K1 -

FORMULASI DAN UJI AKTIVITAS ANTI BAKTERI MASKER PEEL OFF SERBUK GETAH PEPAYA MUDA DAN MADU HITAM Ade Arinia Rasyad, Frenny Zumariny, Ni Wayan Lisa Suasti Stifi Bhakti Pertiwi Palembang; [email protected]

Abstract: It has been reported before that sap of papaya and honey had antibacteria effect against Propionibacterium acne and Staphylococcus sp. The goal of this study is to see the influence of combination between papaya's sap and honey as active agent to their activity as antibacteria. Active agent is formulated in peel-of mask to increase the theurapetic activity and comfort of using consideration. Papaya's sap is prepared as powder. It was extracted and dried in oven. Dry powder was then added with sodium metabisulphite 0,7% before mixed with honey. There were 4 formulas prepared as the composition of papaya's sap and honey. The composition of those formulas were : 12% -8% (F1), 10%-10% (F2), 8%-12% (F3) and pell-of mask without active agent (F4) respectively. PVA, HPMC, Potasium sorbate, glycerin, demin water and ethanol 96% were used to make peel-of mask. Physical evaluation and antibacteria test were then conducted. "sumuran" method was choosen to explore the antibacteria effect. Based on the data, F2 was the most stable formula that give maximum antibacteria effect, i.e., 15,74 mm against Staphylococcus aureus and 18,83 mm against Propionibacterium acne. It can be concluded that the composition of active agent influenced the physical properties and antibacteria effect of papaya's sap and honey. Keywords: Sap of Papaya, Honey, Antibacteria Effect, Peel-of Mask

K2 -

Spinasterol From Filicium decipiens StemBark And Antioxidant Activity of Fractions Adlis Santoni, Djawir Darwis, Ayu Muthia Chemistry.FMIPA of Andalas University. Padang.

Abstract: The aim of the study was to isolate and structure elucidate compound from extract of Filicium decipiens stem bark, Sapindaceae family, to determination antioxidant activity of fractions. A stigmasta-7,22-dien-3-ol (spinasterol) was isolated from the Filicium decipiens, Sapindaceae family. The fractionation of ethyl acetate stem bark extracts by colomn chromatography led to the isolation of Compound 1 (32 mg). The white powder of Compound 1 had melting point 168.1 – 168.3°C. The structure was established on the basis of UV, IR, NMR spectral data and by comparison with literature data. Methanol and ethyl acetate fractions were showed active antioxidant with IC50 value of 33.85 μg/mL and 15.62 μg/mL in the DPPH radical scavenging method. Keywords: Filicium decipiens, Spinasterol, Antioxidant.

K3 -

PHENOLIC COMPOUND FROM HERB OF PATIKAN CINA, EUPHORBIA THYMIFOLIA LINN. Afrida Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]

Abstract: Patikan Cina, Euphorbia thymifolia L.(family Euphorbiaceae) is a medicinal herb used traditionally in dysentery, bleeding piles, gonorrhoae, dysmenorrhoea, amenorrhoea, heminthiasis, ringworm, chronic cough, asthma, bronchitis, cardiac debility, greying of hairs, skin diseases etc. The purpose of this research is to isolate and identificate of phenolic compound from ethyl acetate fraction of whole herb of E.thymifolia. Ethyl acetate fraction of E.thymifolia whole herb was prepared by partion method from metanolic extract and the compound was isolated using chromatography techniques. The compound was characterized by IR and UV-Vis spectroscopies and the data from phytochemistry reaction. The result showed the phytoconstituent from ethyl acetate fraction of whole herb of E.thymifolia is phenolic compound. Keywords: Euphorbia thymifolia, phenolic compound.


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Kumpulan Abstrak Kelompok Kimia (K)

K4 -

AKTIFITAS ANTIOKSIDAN DAN SITOTOKSISITAS EKSTRAK DAUN ALPUKAT (PERSEA AMERICANA Mill.) Afrizal Itam, Nursyafni Desmariza, Sherly Rahmanita, Bustanul Arifin, dan Adlis Santoni Laboratorium Kimia Organik Bahan Alam Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas, Kampus Limau Manis, Padang, 25163 Email: [email protected]

Abstrak: Evaluasi aktifitas antioksidan dan sitotoksisitas dilakukan terhadap fraksi heksan, etil asetat dan air daun alpukat dengan menggunakan metode 1,1-difenil-2-pikrilhidrazil (DPPH) untuk aktifitas antioksidan dan brine shrimp lethality test (BSLT) untuk sitotoksisitas. Hasilnya menunjukkan bahwa aktifitas antioksidan yang dinyatakan dengan IC50 dari fraksi heksan, etil asetat dan air berturut-turut adalah 37.48, 17.21 dan 25.68 mg/L dan sifat sitotoksisitas yang dinyatakan dengan LC50 dari fraksi heksan, etil asetat dan air berturut-turut adalah 39.06, 369.04 dan 530.75 mg/L Kata kunci: Alpukat (Persea americana), antioksidan, sitotoksisitas, DPPH, brine shrimp lethality test

K5 -

SOLUBILITY OF METHYL RED AND METHYLENE BLUE IN MICROEMULSIONS AND LAMELLAR LIQUID CRYSTAL OF THE SYSTEM OF WATER, CATIONIC SURFACTANT AND HYDROCARBON Putria Dwimala, Nurul Aisyah, Deski Beri, Ananda Putra, dan Ali Amran* Jurusan Kimia FMIPA Universitas Negeri Padang, Jl. Prof. Dr. Hamka, Kampus UNP Air Tawar, Padang 25131, *[email protected]

Abstract: This inverstigation was aim at preparing appropriate basic colors for ballpoint ink, and printer cartridge. It has conducted the solubility of methyl red(MR) and methylene blue(MB) in microemulsions and lamellar liquid crystal of the system of water (pH of 4,5, 7,0 and 9.5), cationic surfactants [sodium dodecyl solphate (SDS) and hexadecyl trimethyl ammonium bromide (HTAB)], and hydrocarbon (penthanol, and cycloheksane). In showed that solubilities of MB were higher than MR, in w/o and o/w microemulsions, and in lamellar liquid crystals regions, as well. Keywords: Solubility, methyl red, methylene blue, microemulsions, lamellar liquid crystal, cationic surfactants, and hydrocarbon

K6 -

Monosodium Glutamate Optical Sensor Development as Food Quality Control Alizar Ulianas1,2 & Ali Amran1 1

Department of chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri, Padang, Sumatera Barat, Indonesia, 2Research Center of Population, Environment and Disaster, Universitas Negeri Padang, Sumatera Barat, Indonesia. Emai: [email protected]; [email protected]

Abstract: Monosodium glutamate (MSG) is the additive as a food flavoring ingredient. The concentration of monosodium glutamate can produce delicious flavor of the food is at a concentration of 0.2-0.8% (w/w) and is used in excessive concentrations it can reduce its deliciousness. Although there are no laws that regulate the limit of use of MSG in foods, but from several studies MSG can cause negative effects on health such as headache, seizures, nausea, vomiting, palpitations, shortness of breath and rashes skin and numb. The standard method used to analyze the amount of the content of glutamate in foods is a method HPLC. Prior to the analysis carried out by this method, glutamate must first be converted into fluorosence material with reagent oftaldialdehid (OPA). Additionally, amperometric based enzymatic method has also been used to determine the MSG content in the sample. But most of these methods require a long time and require complicated steps to prepare of sample in laboratorium. Therefore, the development of MSG analysis easier and simpler to detect the content of MSG in food needs to be done; such as sensor method development faster, easier, insitu and do not need special skills to use. Keywords: Monosodium glutamate, Optical sensor

K7 -

SYHTHESIS AND CHARACTERIZATION BACTERIAL CELLULOSE GEL FROM BENGKUANG (Pachyrrhizus erosus urban) EXTRACT Ananda Putra, Fadilah Islami, Iswendi, Ali Amran Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang; email: [email protected]

Abstract: Various extracts of fruit and bulbs yam that contain carbohydrate can be used asfermentation medium to produce bacterial cellulose gels. One of them is extract from bengkuang (Pachyrrhizus erosus urban). The aims of this research were to synthesis and characterize the physical and structural properties of bacterial cellulose gel produced from bengkuang extract with addition of sugar (SBG) and without addition of sugar (SBTG) into their fermentation medium, and to study the influence of sodium hydroxide (NaOH) and

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Kumpulan Abstrak Kelompok Kimia (K) ammonium hydroxide (NH4OH) as soaking medium on their physical and structural properties. Physical properties characterization included thickness, water content and swelling degree. Meanwhile, structure properties of BC gels were analyzed by using Fourier Transform Infra Red (FTIR) and X-Ray Diffraction (XRD). The results showed that the thickness and swelling degree of SBG were greater than that of SBTG, but the water content of SBG were lower than that of SBTG. After soaked into various concentrations of NaOH, thickness, water content and swelling degree of both SBG and SBTG decreased by increasing the concentration of NaOH. At NaOH concentration of 20% (%b/v), the physical properties of SBG and SBTG decreased drastically. Meanwhile, there were no influences on the physical properties of SBG and SBTG obtained after soaked into NH4OH soaked medium. FTIR results showed the cellulose functional group appeared on both SBG and SBTG clearly. XRD results showed that crystalline degree of SBG was higher than that of SBTG. XRD results also showed structure exchanged from cellulose I to cellulose II appeared after soaked into NaOH 20%. However, there was no structure exchanged appeared after soaked into NH4OH soaked medium yet. Keywords: bacterial cellulose, bengkuang extract, soaking medium, physical and structural properties

K8 -

Isolasi dan Uji Aktivitas Senyawa Aktif Antihiperurikemia dari Tumbuhan Sida rhombifolia. Andita Utami 1) dan Roekmi-ati Tjokronegoro 2) 1

Fakultas Sains dan Teknologi, Universitas Jambi; email: [email protected]. 2Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran

Abstrak: Sidagori (Sida rhombifolia) merupakan jenis tanaman obatyang memiliki khasiat utama menyembuhkan penyakit asam urat. Obat asam urat dari tumbuhan S. rhombifolia sudah umum digunakan berupa teh herbal, namun tidak ada keterangan yang lengkap seperti dosis pemakaian dan lama penggunaan. Penelitian ini bertujuan untuk mengisolasi senyawa aktif anti asam urat dan mengetahui adanya pengaruh senyawa aktif terhadap penurunan kadar asam urat secara in-vivo. Tahapan penelitian yang dilakukan meliputi isolasi senyawa aktif menggunakan metode ekstraksi dan kromatografi mengikuti penelitian sebelumnya, selanjutnya dilakukan uji aktivitas farmakologis terhadap senyawa aktif secara in-vivo menggunakan mencit sebagai hewan percobaan. Mencit dibagi atas kelompok kontrol, kelompok pembanding dan kelompok uji. Pada kelompok kontrol, mencit diberi suspensi kalium oksonat dengan dosis 350mg/kg kemudian dibiarkan selama satu jam lalu diberi suspensi PGA 2%. Satu jam kemudian darah mencit diambil dengan cara memotong ekornya dan kadar asam urat diukur menggunakan alat pengukur asam urat UA Sure. Sedangkan untuk kelompok uji, setelah pemberian kalium oksonat, mencit diberi suspensi senyawa aktif antihiperurikemia dengan dosis 75mg/kg dan 150mg/kg secara oral, begitu pula kelompok pembanding yang diberikan suspensi allopurinol dosis 5mg/kg, yang selanjutnya diperlakukan sama seperti kelompok kontrol. Hasil penelitian menunjukkan adanya pengaruh pemberian senyawa aktif terhadap penurunan kadar asam urat secara in-vivo. Kata kunci: Antihiperurikemia, Sidagori, asam urat

K9 -

PENGEMBANGAN LEMBAR KERJA SISWA (LKS) EKSPERIMEN BERBASIS GUIDED-INQUIRY UNTUK MATERI LAJU REAKSI TINGKAT SMA/MA Andromeda1), Yerimadesi1), Iwefriani2) 1)

Jurusan Kimia FMIPA UNP, Padang; [email protected]. 3)Prodi pendidikan Kimia FMIPA UNP, Padang

Abstrak: Penelitian ini bertujuan menghasilkan bahan ajar materi Laju reaksi berbasis Guided-Inquiry (siklus belajar: fase eksplorasi, penemuan/pembentukan konsep dan aplikasi) dalam bentuk LKS eksperimen yang valid dan praktis digunakan dalam pembelajaran kimia di SMA/MA. Jenis penelitian termasuk pada Research and Development (R&D). Model pengembangan yang digunakan dalam penelitian ini adalah four-D(4-D). Instrumen penelitian berupa lembar validasi dan angket. Data hasil penelitian terdiri dari tiga aspek yaitu, validitas, praktikalitas dan efektifitas bahan ajar. Data validitas dan praktikalitas diolah menggunakan formula Kappa Cohen, dan data efektifitas menggunakan persentase Pada penelitian ini dibatasi pada uji validitas dan praktikalitas. Validasi bahan ajar dari aspek isi, kebahasaan dan kegrafisan serta kelayakan konstruksi. Data dari validator diperoleh skor rata-rata moment kappa adalah 0,87, dan hasil analisis kepraktisan yang dilakukan dengan pengujian terbatas di MAN 3 Padang diperoleh skor rata-rata nilai kepraktisan 0,84 dari guru dan 0,78 dari siswa. Dari hasil analisis LKS yang kerjakan siswa menunjukkan 80% pertanyaan-pertanyaan kunci yang terdapat pada LKS eksperimen yang telah dibuat dapat dijawab siswa.Hasil ini menunjukkan bahwa LKS eksperimen berbasis guided inquiry yang dikembangkan sangat valid dan praktisdigunakan dalam pembelajaran kimia. Kata kunci: LKS Eksperimen, Guided Inquiry, Laju Reaksi, Model 4-D

K10 - Biosensor untuk mendeteksi residu pestisida organofosfat Ani Mulyasuryani Jurusan Kimia FMIPA Universitas Brawijaya; [email protected]


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Kumpulan Abstrak Kelompok Kimia (K) Abstrak: Salah satu cemaran pangan dalam produk pertanian adalah residu pestisida. Instrumen untuk mendeteksi kadar residu pestisida dapat dikembangkan dengan mengukur konduktivitas pestisida yang dihidrolisis secara enzimatis. Enzim diamobilkan pada suatu elektroda dalam sel konduktivitas, sehingga dapat dihasilkan konduktivitas larutan secara langsung. Berdasarkan hubungan linier antara konsentrasi pestisida dengan konduktivitas dapat dibuat instrumen yang menghasilkan data dalam satuan konsentrasi. Pestisida yang diuji adalah diazinon, malathion, profenofos dan klorpirifos. Variabel kinerja instrumen adalah ukuran elektroda, pH larutan uji, dan voltase. Kepekaan maksimum dihasilkan pada elektroda ukuran 1x5 mm 2, pH larutan 8,5 dan voltase 100 mV. Instrumen ini dapat mengukur kadar pestisida pada kisaran 0 – 1000 ppb, dengan akurasi 86100 %. Kata kunci: residu pestisida, diazinon, malathion, profenofos, klorpirifos

K11 - Pengaruh Pemberian Sari Daun Cincau (Premna oblongiofolia Merr ) terhadap kadar Trigliserida dan Malonaldialdehida ( MDA) Tikus Hiperlipidemia (Rattus norvegicus ) 1 1

Anna Roosdiana, 2Dyah Ayu Oktavianie, 2Fadillah Asyiah Rahmatina ,2 Eka Nora Vitaloka

Jurusan Kimia FMIPA Universitas Brawijaya, 2Program Kedokteran Hewan Universitas Brawijaya

Abstrak: Hiperlipidemia merupakan keadaan meningkatnya kadar lipid di dalam darah berupa lipoprotein dan trigliserida. Peningkatan kadar lipida diikuti dengan peningkatan kadar MDA. Daun Cincau (Premna oblongiofolia Merr)banyak mengandung flavonoid, saponin, polifenol dan alkaloid, komponen tersebut diduga berpotensi sebagai antihiperlipidemia. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian sari daun cincau terhadap kadar trigliserida dan MDA dalam serum Tikus (Rattus norvegicus ) yang diiduksi dengan High Fatty Diet(HFD). Penelitian ini menggunakan tikus (Rattus norvegicus) jantan stain Wistar dengan usia 8 minggu dan berat badan 200 gram yang dibagi menjadi 5 kelompok perlakuan yaitu kelompok Kn (kontrol negatif), Kp (kontrol positif), kelompok P1, P2, dan P3 diinduksi HFD dan diterapi preventif dengan sari daun cincau dengan dosis berturut-turut 5,27 g/kg BB/hari; 8,43 g/kg BB/hari; dan 9,37 g/kg BB/hari. Terapi preventif sari daun cincau dilakukan dengan menyondekan sari daun cincau yang dilarutkan air. Sedangkan untuk induksi hiperlipidemia dilakukan dengan menyonde pakan tinggi lemak dengan perbandingan 1 g kuning telur puyuh: 2 g mentega: 2 g lemak sapi. Kadar Trigliserida diukur dengan pereaksi Glycerol 3phosphate oxidase –Phenol Aminophenazone (GPO-PAP) dan Kadar MDA diukur dengan pereaksi TBA Data kadar Trigliserida dan MDA dianalisis secara kuantitatif menggunakan ANOVA, Kesimpulan dari penelitian ini adalah sari daun cincau hijau dapat menurunkan kadar trigliserida 49,74 % dan kadar MDA48,40% pada tikus (Rattus norvegicus) induksi HFD dengan dosis terbaik yaitu 9,37 g/ kg BB/ hari. Kata kunci: Daun Cincau (Premna oblongiofolia Merr), hiperlipidemia, Malonaldialdehida , Trigliserida.

K12 - GREEN SYNTHESIS NANOPARTIKEL SnO2 DAN POTENSINYA SEBAGAI FOTOELEKTRODA PADA DYE-SENSITIZED SOLAR CELLS (DSSCs) Asdim1), Evi Maryanti2), Faisal Hadi3) 1

Divisi Kimia Fisika, Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Bengkulu, e-mail: [email protected]. 2Divisi Kimia Anorganik, Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Bengkulu. 3Jurusan Teknik Elektro, Fakultas Teknik, Universitas Bengkulu, Jl. W.R Supratman, Kandang Limun 38371 A Bengkulu

Abstract: Green synthesis of SnO2 nanoparticles by hydrothermal method using aqueous extracts of several natural products as mediumhas been carried out at relatively low temperature. SnO2 nanoparticles as synthesized were characterized by an X-Ray Diffractometer (XRD) and a Scanning Electron Microscope (SEM). The pattern of XRD results showed that all products yielded phase pure SnO 2 nanocrystals. All diffraction peaks indicated that no impurity peaks can be observed which indicating the high purity of the SnO2 nanoparticles. The results indicated that the extracts of several natural products give significant effect to the size and morphology controlled of SnO2 nanoparticles. Furthermore, the potential application of SnO 2 nanoparticles as photoelectrodes in dye-sensitized solar cells(DSSCs) was discussed in view of their differences in size and morphology. Keywords: Nanoparticles, SnO2, Hydrothermal, Green synthesis

K13 - PENGEMBANGAN LEMBAR KERJA MAHASISWA (LKM) PADA MATAKULIAH BAHASA INGGRIS KIMIA (ENGLISH FOR SPECIFIC PURPOSE, ESP-KIMIA) PADA PRODI KIMIA, FKIPUR Asmadi Muhammad Noer Prodi Pendidikan Kimia, FKIP- Universitas Riau; email: [email protected]

Abstrak: Matakuliah bahasa Inggris Kimia merupakan matakuliah pendukung berkarya yang menunjang profesional mahasiswa prodi kimia atau calon guru Kimia dalam rangka peningkatan penguasaan konten/isi 4


Kumpulan Abstrak Kelompok Kimia (K) (ilmu kimia). Metode Pengembangan bahan ajar/matakuliah (atau disebut juga LKM) ini mengikuti desain Plomp dimana terdiri dari tiga tahap yaitu penelitian awal (analisis kebutuhan dan karakteristik peserta didik), Produk (prototype) dan Evaluasi (validasi produk). Sesetelah terbentuk prototype bahan ajar yang memperhatikan analisis kebutuhan dan karakteristik mahasiswa, maka dilakukan validasi produk dengan meminta para pakar bidang pembelajaran ( instruksional desain specialist), pakar konten specialist (pendidikan kimia) dan pakar bahasa Inggris. Semua masukan dan perbaikan diakomodasi setelah sebelumnya dilakukan dilakukan validasi self-evaluation terhadap dari prosuk asal/protype pertama kali dihasilkan. Kata kunci: Matakuliah-Bahasa Inggris Kimia, Lembar kerja Mahasiswa, Evaluasi -sendiri

K14 - EFEKTIVITAS METODE STUDENT CENTERED LEARNING BERORIENTASI GREEN CHEMISTRY Axel Deby Cornellia Arifianty, Ugi Fitri Hardiyanti, Dahlena Pulungan Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Email: [email protected]

Abstract: This research aims to know the effectiveness of student centered learning oriented green chemistry for science process skills at XI school grade of SMA in Medan on 2016/2017 period. The population is normal and homogeneous, so to take two groups of samples using cluster random sampling techniques. Design of this research is posttest only control design. The succes of this research seen from cognitive aspect of student achievement reach KKM. At the final stage of the analysis, the t test used was left-test with t count > t table (1.696). The student achievement for experimental classes obtained t count of 3.860 while the control class 0,914. This suggests that the experimental class has achieved mastery learning, while the control class not yet. The average value of the psychomotor aspects of students in the experimental class was 82.6 which is included in the excellent category and control class was 74 included in good category. In the aspect of Students environmental concern, the average value of the experimental class was 88.65 included in the excellent category and class control was 81.7 included in good category. The conclusion was that the researchoriented student centered learning of green chemistry proved effectively increase learing outcomes. Keywords: student centered learning, green chemistry.

K15 - PENGEMBANGAN PERANGKAT PEMBELAJARAN PEMAKNAAN SEBAGAI STRATEGI MEMBANGUN SISWA KOMPREHENSIF PADA PEMBELAJARAN KIMIA POKOK BAHASAN STRUKTUR ATOM SEKOLAH MENENGAH ATAS Betty Holiwarni Universitas Riau,Pekanbaru; E-mail: [email protected]

Abstrak: Salah satu faktor penyebab belum diterapkan proses pembelajaran sesuai tuntutan kurikulum 2013 di sekolah-sekolah dewasa ini karena guru kimia mengalami kesulitan untuk merancang dan mengembangkan pembelajaran yang sesuai dengan kurikulum. Untuk memecahkan masalah ini, maka dilakukan penelitian untuk mengembangkan perangkat pembelajaran pemaknaan sebagai strategi membangun siswa komprehensif yang valid, praktikal, dan efektif untuk pembelajaran kimia SMA pokok bahasan struktur atom. Metode penelitian yang digunakan adalah development research. Penelitian dilaksanakan dalamtiga tahun dan terdiri dari tiga tahap, yaitu analisis muka belakang, prototipe, dan implementasi. Data penelitian dikumpulkan melalui observasi kelas, wawancara dengan siswa, guru, pakar pendidikan kimia, analisis hasil kerja siswa, dan tes. Hasil penelitian tahun pertama menunjukkan bahwa perangkat penilaian berbasis kelas yang dikembangkan memenuhi kriteria valid dari segi isi dan konstruksi Kata kunci: perangkat pembelajaran pemaknaan, siswa komprehensif

K16 - IMPLEMENTASI PEMBELAJARAN QUANTUM DENGAN MODUL UNTUK MENINGKATKAN PENCAPAIAN SISWA DALAM PEMBELAJARAN HIDROKARBON Biuti Fourtuna Jurusan Kimia Universitas Negeri Medan, Jl. Williem Iskandar Psr V Medan Estate, Medan, Sumatera Utara, Indonesia, 20221, E-mail : [email protected]

Abstract: The influence of using module as a learning media combined with quantum teaching to increase student‟s achievement in chemistry for Senior High School (SHS) on the teaching of hydrocarbon is explained in this paper. The objectives of quantum teaching combined with module is to give a new innovation in teaching and learning process and to find the best way to increase student‟s achievements. The research was done in the first grade of State Senior High School in Percut Sei Tuan (SMA Negeri 1 Percut Sei Tuan), Regency of Deli Serdang, and Province of North Sumatera. The result showed, the influence of quantum teaching with module to increase students‟ achievements on the teaching of hydrocarbon had been proven; it can be seen by comparing the students‟ ability of solving problems before and after the teaching activities. Before teaching, the students‟ achievement in control class was (M=27), and in experimental class was (M=31), by using F-test for SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) homogeneity, those 2 classes were homogeneous where F calculation 1.028 < Ftable 2.168. After learning process, there was an increasing of students‟ achievement, where the result in experimental class (M=79.5) was bigger than in control class (M=60). By using t-test of comparing 2 classes, the effectiveness of using quatum teaching with module in learning process had also been proven after having significantly different results compared to conventional (speech) method, where tcalculation 8.304 > ttable 2093. It can be concluded that the student‟s achievements were increased after using quantum teaching with module because it gave new innovation and interesting way in learning. Keywords: Learning Media, Module, Quantum Teaching, Hydrocarbon

K17 - ANALISIS KANDUNGAN BEBERAPA ION PADA AIR SUNGAI DI KOTA PADANG MENGGUNAKAN HIGH ION CHROMATOGRAPHY (HIC) Budhi Oktavia, Edi Nasra, Hary Sanjaya, Emil Febrianto, Adek Sudtri Yunanda Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang; email: [email protected]

Abstract: The content of ions in the water is one of the reference water quality. That requires a method that could test the ion content continuously with a high degree of accuracy. The river water is the source of water used for drinking, irrigation and industry, so it is necessary to continuously analyzes. In this study we analyzed the content of cations and anions such as sodium (Na +), magnesium (Mg2+), calcium (Ca2+), chloride (Cl-), bromine (Br-), and sulfate (SO42-) were performed by varying the eluent , eluent concentration and concentration of ions, as well as the measurement is done by HIC. These cations and anions that are often found in fresh water, that cause of the decline in water quality as pollutant such as pesticides, detergents and hardness in high concentrations. This research has been applied to determine the content of these ions in the river water in the Padang city. These results indicate that the eluent 5 mM oxalic acid as the mobile phase to determine cations and 4 mM sodium benzoate as the mobile phase for anions. The results showed that the range of concentration of sodium = 1,06 – 2,95 ppm, magnesium = 3,21 – 132,48 ppm, calcium = 37,85 – 125,40 ppm, chloride = 1,007 - 0,179 ppm, sulfate = 17,826 - 46,137 ppm and for bromide was not detected in all samples river water. Keywords: High Ion Chromatography, Cations, Anions, River Water of Padang City

K18 - ISOLASI DAN UJI ANTIOKSIDAN SENYAWA KUMARIN DAN FLAVONOID DARI TANAMAN Fagraea ceilanica Thunb. Bustanul Arifin, Afrizal Itam, Norman Ferdinal, Rian Wahyu, Rizki Alfajri Jurusan Kimia FMIPA Universitas Andalas Universitas Andalas, Padang 25613, e-mail: [email protected]

Abstract: Isolation coumarin compounds of Fagraea ceilanica Thunb leaves and flavonoid compounds from the bark Fagraea ceilanica Thunb has been done by maceration method using n-hexane, ethyl acetate and methanol. At the ethyl acetate extract was carried out using a chromatography column eluent n-hexane and ethyl acetate in a polar-rise. Compounds isolated from leaves in the form of a white solid, melting point 1401410C. Ultraviolet spectra were obtained absorption at a wavelength of 227 and 311 nm. While the infrared spectrum showed the presence of substituents OH, C = O, C = C and C-H. The antioxidant activity was very weak with IC50 value of 4098 mg / L.. While the compounds isolated from the bark in the form of yellow colored crystals, melting point 205-2070C. Ultraviolet spectra were obtained absorption at a wavelength of 288; 296; 344 nm. While the infrared spectrum showed the presence of substituents OH, C = O, C = C, C-O and C-H. The antioxidant activity was relatively weak with IC50 values of 358 mg / L. Keywords: Fagraea ceilanica, kumarin, flavonid, antioksidan

K19 - HYDROXYAPATITE-CHITOSAN COMPOSITE COATING ON TiAl ALLOY ELECTROPHORETIC DEPOSITION METHOD Charlena, Irma Herawati Suparto, Chonny Damayanti FMIPA Institut Pertanian Bogor; email: [email protected]

Abstract: TiAl alloys is commonly used for bone implant applications because it has good biocompatibility. However, in long term usage of metal implants, metal release, which can harm the body, may occur. The metal release can be inhibited by hydroxyapatite-chitosan composite coating on the metal surface using Electrophoretic Deposition (EPD) method. EPD method carried out with 200 v for 40 and 60 minutes, to compare the impact of different interval time in producing the best product. The coated alloy was observed physically by SEM and showed that 60 minute-treatment produced better result. The XRD and FTIR analysis shows that the composite of hydroxyapatite-chitosan has successfully coated on TiAl alloy. The coated TiAl alloy also has low corrosion rate and could potentially be used as bone implants. Keywords: chitosan, electrophoretic deposition, hydroxyapatite, TiAl

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K20 - Karakteristik Adsorpsi Tembaga(II) pada Biomassa Azolla microphylla yang Diesterifikasi dengan Asam Sitrat dan Diamobilisasi pada Manik-Manik Kalsium Alginat Danar Purwonugroho, Rachmat Triandi Tjahjanto, Emi Setyowati Fakultas MIPA Universitas Brawijaya Malang, email: [email protected]

Abstract: The objective of this research was to study the characteristics of copper(II) adsorption on the biomass of Azolla microphylla esterified with citric acid and immobilized in calcium alginate beads. Esterification of biomass was done by suspending 5 g of A. microphylla biomass of 120-150 mesh into a 0.8 M of citric acid solution, followed by drying the suspension at a temperature of 60 °C. Then, the dried mixture was heated at a temperature of 120 °C for 3.5 hours. Immobilization of esterified biomass was performed by pouring 400 mL of CaCl2 solution into a suspension of 5 g biomass of A. microphylla-citrate in 50 mL of sodium alginate solution. Increasing the acidity and its infrared spectrum confirmed that the biomass was successfully esterified. Batch adsorption experiments were carried out at room temperature (25  2 oC) using adsorbent of 60-100 mesh at various pH of 3-7, various contact time of 5-120 minutes, as well as various copper(II) concentration of 100-300 mg/L. The percentages of copper(II) adsorption were calculated according to its final concentrations which were determined by atomic absorption spectrophotometer. The results showed that the optimum conditions of copper(II) adsorption on the biomass of A. microphylla-citrate immobilized in calcium alginate occured at pH 4 and a contact time of 10 minutes. The adsorption of copper(II) on the adsorbent was found to be well represented by the pseudo-second order kinetic model. It was also found that the adsorption of copper(II) on the adsorbent was better expressed in the Langmuir adsorption isotherm equation than that of Freundlich. Keywords: biosorption, copper(II), Azolla microphylla, citric acid, alginate

K21 - ADSORPSI ION Pb(II) MENGUNAKAN ADSORBEN KITIN TERESTERIFIKASI Darjito, M. Misbah Khunur, Arya Budi Setyadi Jurusan Kimia FMIPA UB, Email : [email protected]

Abstrak: Telah dilakukan penelitian tentang adsorpsi ion Pb(II) menggunakan adsorben kitin teresterifikasi. Proses esterifikasi merupakan modifikasi struktur adsorben kitin melalui reaksi esterifikasi gugus – OH pada kitin. Penelitian ini bertujuan untuk mempelajari pengaruh pH, lama kontak dan variasi konsentrasi ion Pb(II) pada proses adsorpsi menggunakan adsorben kitin teresterifikasi. Variabel yang akan dikaji dalam penelitian ini secara berurutan adalah pH larutan (3, 4, 5, 6, dan 7); lama kontak (20, 40, 60, 80, dan 100 menit) dan variasi konsentrasi ion Pb(II) (100, 150, 200, 250, 300, dan 350 ppm). Hasil penelitian Kitin teresterifikasi teridentifikasi dari data FT-IR dengan munculnya spektra serapan gugus O-H asam karboksilat pada bilangan gelombang 3388,70 dan 3564,21 cm-1 serta gugus C=O karboksilat pada bilangan gelombang 1666,38 cm-1 yang diikuti juga adanya gugus C-O ester pada bilangan gelombang 1000 - 1300 cm-1. Berdasarkan hasil uji menggunakan SEMEDX menunjukkan morfologi kitin teresterifikasi memiliki struktur yang lebih teratur dibandingkan kitin dan terjadi peningkatan jumlah kandungan unsur karbon dari 20,25% menjadi 33,33%. Kondisi optimum adsorpsi ion Pb(II) terjadi pada pH 5 dan lama kontak pada menit ke 60. Kapasitas adsorpsi kitin teresterifikasi terhadap ion Pb(II) sebesar 124,33 mg/g. Kata kunci: Ion Pb(II), Adsorpsi, Kitin teresterifikasi.

K22 - EFFECT OF POLYVINYL ALCOHOL (PVA) ON PREPARATION OF PVA/CHITOSAN AND PVA/MgAl-LDH/CHITOSAN COMPOSITE BEADS Deni Agus Triawan1, Sri Juari Santosa2, Suyanta2 1

Department of Chemistry, Mathematics and Natural Science, University of Bengkulu, [email protected]. 2Department of Chemistry, Universitas Gadjah Mada

Abstract: Polyvinyl alcohol/chitosan (PVA/chitosan) and Polyvinyl alcohol/chitosan composite beads containing MgAl layered double hydroxide (PVA/MgAl-LDH/chitosan) were synthesized by varied of MgAl-LDH content. The composites were characterized with Fourier transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD) and scanning electron microscopy – energy dispersive X-ray analysis (SEM-EDAX). FTIR spectra given adsorption specific of NO3 at 1381,03 cm-1 from MgAl-LDH, 462,9 cm-1 from Mg-O-Al and 3441 cm-1 from NH2. Addition of MgAl-LDH increased of d003 characteristic on composites by increased of MgAl-LDH. The microstructure obtained by SEM for this composites showed that particles are relatively well dispersed in the chitosan matrix. Howefer, the increasing concentration of the MgAl-LDH content from 12,5% to 50% decreases the homogeneity of surface the composites. In this case, the sweel effect of the various addition of MgAl-LDH and PVA on chitosan matrix was observed. Generally, addition of PVA on both composites improved the mechanical properties that decrease of deformation percent more than composites without PVA. Keywords: composite beads, PVA/chitosan, PVA/MgAl-LDH/chitosan


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K23 - THE IMPLEMENTATION OF COOPERATIVE LEARNING MODEL TYPE TOWARD STUDENTS’ LEARNING OUTCOMES IN LEARNING COLLOIDAL SYSTEM TOPIC Descey Natalia Simbolon Chemistry Department of FMIPA State University of Medan, Jl.Willem Iskandar Psr V Medan Estate, Medan, North Sumatera, Indonesia, 20221, E-mail: [email protected]

Abstract: The Implementation of Cooperative Learning Model Type toward Students‟ Learning Outcomes in Learning Colloidal System is explained in this paper. The purpose of this research is to fulfill the knowledge of the students through Cooperative Learning Model Type. This research was conducted on SMAN 2 Balige through the teaching of students with Cooperative Learning Model Type to the experimental class and compared the result with those control class that taught by conventional teaching. The Cooperative Learning Model Type can make students‟ learning outcomes increase. The result showed of compare that students‟ learning outcomes with Cooperative Learning Model Type STAD (M= 70±7.94) is higher than the students that taught by conventional teaching (M= 52±7.67), and both of the class are significantly different (ttest 2.77 > ttable 1.33). It can be concluded that teaching of Colloidal system with Cooperative Learning Model Type can improve students‟ learning outcomes and character in learning. Furthermore, using Cooperative Learning Model Type in the class is more effectively than using conventional method that is shown from the different of value that is gotten from the experimental class and control class. Keywords: Cooperative Learning, Learning Model, Learning Outcomes, Colloidal System

K24 - DESIGN EKPERIMEN UNTUK OPTIMASI PENENTUAN TEMBAGA DALAM AIR SECARAVOLTAMMETRI STRIPPING ADSORPTIF Deswati dan Hamzar Suyani Jurusan Kimia FMIPA, Universitas Andalas Padang, 25163, [email protected], [email protected]

Abstract: A procedure for the determination of metal Cu(II) by adsorptive stripping voltammetry (AdSV) using calcein as acomplexing agent, has been optimized. These lection of the experimental conditions was made using experimental of respon surface methodology. The influence of several parameters were studied :variations ofcalcein concentration, pH, accumulation potential and accumulation time. The design experiment was a central composite design with 4 factors/variables, 3 levels and 31 treatment combinations. From analysis of variance, it was decided to accept the second-order model and the independent variable, concluded that a significant effect on the response variable (peakcurrent). Based on data analysis with response surface method, the determination of copper obtained optimum conditions were: calcein concentration 0.11mM, pH 6.79, accumulation potential -0.88 Volt and accumulation time 42.34 seconds with a maximum peak current 373.14nA. At the optimum condition were obtained relative standard deviation 0.74 %, recovery 99.88%, the linear range 0.2- 110µg/L, coefficient of correlation 0.99 with a detection limit of 1.79µg/L. The procedure was successfully applied to the determination of copper in water samples with out prior treatment. Keywords: copper, adsorptive, stripping, voltammetry, water.

K25 - PENYERAPAN LOGAM Cu(II) DALAM LARUTAN MENGGUNAKAN BIJI DAN KULIT BUAH LENGKENG (Euphoria logan lour) Dengan Metoda Kolom Desy kurniawati,1) Rahmiana zein 2) Zulkarnain Chaidir3)dan Hermansyah aziz4) 1)

Chemistry Dept. FMIPA Universitas Negeri Padang; Email: [email protected]. 2) 3)4) Chemistry Dept. FMIPA Universitas Andalas Padang

Abstract: The removal of Cu (II) from aqueous solutions was studied by column adsorption systems using Longan (Euphoria logan lour) seed and shell as sorbents. The parameters such as pH, initial concentration, particle sizes, adsorbent dose and flow rate were also studied. The results showed that the optimum condition was at pH = 3, concentration 400 mg/l, 250 µm particle sizes, adsorbent dose 0,5 g and 3 ml/min flow rate with adsorption capacity 3,734 mg/g for longan seed and 7,5125 mg/ for longan shell. The biosorption data were fitted to isotherm Langmuir with R = 0,99061 (Seed) and R = 0,9984 (shell). The result showed that longan shell and seed were effective as a biosorbent for removing copper ions from aqueous solution. It is a low cost material that shows potential to be applied in waste water technology for remediation of heavy metal contamination. Keywords: Biosorption, Column method, Euphoria logan lour, Cu.

K26 - Adsorption Isotherms and Thermodynamics On Mild Steel Corrosion Inhibition By Cassava (Manihot Esculenta) Leaf Of Water Extract Diah Riski Gusti1), Emriadi2), Admin Alif2), Mai Efdi2) 1)

Sains and Technology Faculty, Jambi University, Indonesia, [email protected]. 2)Mathematics and Sains Faculty, Andalas University, Indonesia

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Kumpulan Abstrak Kelompok Kimia (K) Abstract: Water extracts of cassava leaves (Manihot esculenta) has been studied as a corrosion inhibitor for steel in sulfuric acid solution. Cassava leaf extracts are soluble in water (CLESW) is obtained by evaporation. Adsorption isotherm that is used are the Langmuir , Freundlich, Frumkin and Temkin. Temperatue is used is 303K, 313K, 323K and 333K. The results approaching R2 ± 1 were obtained Langmuir adsorption isotherm on 303K, 313K, 323K and 333K respectively is 0,999; 0.9925, and 0.9985 09 987. While the calculation of thermodynamics shows that the higher values of Ea in the presence of inhibitor compared to its absence are generally consistent with a physisorption. ∆Hads = -0,1195 kJmol-1, shows that adsorption process is exothermic. The values of ΔHads from extract CLESW as corrosion inhibitors absorb on the surface of mild steel through physisorption process. Keywords: Inhibision, steel, corrosion, cassava, thermodynamics

K27 - AKTIVITAS ANTIMIKROBA DAN BIOAUTOGRAFI EKSTRAK ETANOL DAUN SIMPUR (Dillenia sp.) TERKARAKTERISASI TERHADAP Staphylococcus aureus Diah Tri Utami, Elisma, Fitrianingsih Fakultas Sains dan Teknologi Universitas Jambi, email: [email protected]

Abstract: Herbal medicines are being used by about 80% of the world population primarily in the developing countries for primary health care. The Simpur plants (Dillenia sp.) can be used traditional medicine. This study was carried out to evaluated the antimicrobial activity of secondary metabolites presents in extracts of Dillenia sp., using Kirby–Bauer method and bioautography.Crude ethanolic extract of leaf Dillenia sp. were made with ethanol p.a 70%.Crude ethanolic extract of leaf Dillenia sp. was characterized before used and phytochemical analysis of crude extract was done by following the standard methodology, and antimicrobial activity was evaluated by inhibition zone. Characterizedethanolic extract of leaf Dillenia sp. were resolved through TLC and the antimicrobial activity of the separated compounds was evaluated by bioautography. Characterized ethanolic extract of leaf Dillenia sp. have shown some phytochemicals there are fenolic, flavonoid, saponin, tannin, steroid and shown antimicrobial activity. Bioautography assay results shown a zone inhibition at Rf 0,46 and Rf 0,9 against Staphylococcus aureus. The present study supports the use of Dillenia sp.in the traditional medicine, and it can be used against microbial infections. Keywords: Antimicrobial, Bioautography, Dillenia sp., Characterized ethanolic extract of leaf Dillenia sp.

K28 - Efek Pelapisan Nanokluster TiO2-SiO2Terhadap Sifat Self-Cleaning Katun Tekstil Dengan Cross Link Asam akrilat Yetria Rilda, Admin Alif, Syukri, Fadhli Jurusan Kimia FMIPA Universitas Andalas; Email: [email protected]

Abstract: The aim of this research is to utilized the TiO 2-SiO2 in the preparation of the self-cleaning textile cotton with the cross link of acrylic acid compound. The perfection of TiO 2-SiO2 coating in textile cotton fiber needed dip-spin-coating time in acrylic acid and TiO2-SiO2, both were for 24 h and 90 min respectively.The modification of the textile cotton‟s fiber surface was confirmed by mass increasing. The FT-IR peak intensitycharacteristic at 1700 cm-1 with the presence of carboxyl functional group respectively without coating and TiO 2-SiO2 layered cotton. The morphology of fiber was distributed homogenely with TiO 2-SiO2 nanoclustershowedSEM-EDX characterization. The performance of self-cleaning from TiO2-SiO2 layered textile cotton was evaluated to metilen blue (MB) as drop model of dye with UV light (536 Lux) for 120 mins. Keywords: Self-cleaning, metilen blue, dip-spin-coating, nano-cluster, acrylic acid

K29 - PENGARUH INHIBITOR EKSTRAK KULIT BUAH KAKAO (THEOBROMA CACAO) TERHADAP LAJU KOROSI BAJA LUNAK DALAM MEDIA GARAM Yuli Yetri Politeknik Negeri Padang

Abstrak: Efek inhibisi korosi dan sifat-sifat adsorpsi oleh ekstrak kulit buahkakao (Theobroma cacao) pada mild steel dalam larutan NaCl 1,5M dipelajari menggunakan teknik konvensional metode berat hilang (weight loss) pada variasi waktu, konsentrasi dan suhu, polarisasi potensiodinamik (Tafel) pada rentang suhu (303-323) K serta Electron Impedance Spectroscopy (EIS) dengan konsentrasi ekstrak 0,5-2,5% dengan selang 0,5% untuk menentukan efisiensi inhibisinya. Polarisasi elektrokimia telah dievaluasi untuk memastikan jenis inhibitor. Spektra infrared dan GCMS dilakukan untuk mengetahui senyawa ekstrak yang berperan dalam proses inhibisi. Morfologi permukaan sampel diamati dengan menggunakanscanning electron microscopy dengan energy dispersive X-ray spectroscopy (SEM-EDX). Berdasarkan hasil penelitian diketahui bahwa laju korosi berkurang dengan kenaikan konsentrasi ekstrak dan meningkat dengan kenaikan temperatur. Efisiensi inhibisi terkorosi sebesar 91.93 (weight loss) dan 85.90% (Tafel), 90.19% (Rp) dan 71.78% (EIS)pada konsentrasi ekstrak 2,5%.


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Kumpulan Abstrak Kelompok Kimia (K) Kenaikan efisiensi inhibisi juga diikuti oleh kenaikan derajat penutupan permukaan akibat dari adsorpsi kimia yang terjadi di permukaan. Kurva polarisasi menunjukkan inhibitor ini berperilaku sebagai inhibitor campuran dengan dominan pada inhibisi katodik.Adsorpsi kimia (chemiadsorpsi) yang terjadi di permukaan memenuhi aturan adsorpsi Isotherm Langmuir, dengan indikasi adsorpsinya unimolekuler. Penambahan ekstrak polar kulit buah kakao ke dalam larutan NaCl sangat efektif untuk mengurangi serangan korosi di permukaan mild steel. Kata kunci: Extract, Corrosion inhibitor, Tafel, Adsorption, GC-MS

K30 - DAYA ADSORPSI ZEOLIT ALAM CLIPNOTILOLIT-Ca YANG DIAKTIVASI DENGAN PEMANASAN TERHADAP Pb(II) Zilfaa, Upita Septianib, Annisa Rahayua a

Laboratorium Kimia Analitik Terapan Jurusan Kimia FMIPA, Universitas Andalas, e-mail: [email protected]. Laboratorium Kimia Material, Jurusan Kimia FMIPA, Universitas Andalas, Jurusan Kimia FMIPA Unand, Kampus Limau Manis, 25163 b

Abstrak: Penelitian mengenai manfaat zeolit alam yang teraktivasi sebagai penyerap ion Pb(II) telah dilakukan. Parameter yang digunakan adalah pengaruh variasi aktivasi, ukuran partikel adsrben, massa adsorben, waktu kontak, volume larutan logam, konsentrasi awal larutan, dan pH larutan. Parameter tersebut dipelajari untuk mengetahui kondisi optimum pada proses adsorpsi. Pada penyerapan ion Pb(II) didapatkan kondisi optimumnya pada proses aktivasi temperatur 105oC, ukuran 125 µm, massa adsorben 0,1 g, waktu kontak 30 menit, volume 12,5 mL, konsentrasi 40 mg/L, dan pH 7. Kapasitas penyerapan pada kondisi optimum untuk ion Pb(II) secara adalah 4,98 mg/g. Kata kunci: adsorben, adsorpsi, zeolit, logam berat

K31 - UTILIZATION STUDY OF Ipomoea batatas EXTRACT AS NATURAL INDICATOR TO DETECT BORAX Dwita Oktiarni, Indah Puspita Sari, Sal Prima Yudha S., Asdim, Devi Ratnawati Fakultas Matmatika dan Ilmu Pengetahuan Alam, Universitas Bengkulu; email: [email protected]

Abstract: The aim of this research was to determine whether the water extract of Ipomoea batatas tuberscan be used as a natural indicator to detect the presence of borax content based on qualitative analysis using spectrophotometer UV-Vis. Research stages were identification of sample, preparation of Ipomoea batatastubersextract solution, analysis of solution stability and measurement of wavelength alterations. Based on the UV-Vis analysis, the solution of water extract of Ipomoea batatas tubers could be used as an indicator for borax identification. This phenomenon was supported by the presence of new peak at 601-609 nm when borax was added to the solution. Beside that long storage time of solution was very influential on wavelength shift, where only the first day of measurement shown the best result. Therefore in analysis of borax should be done in a fresh condition. Keywords: Borax, Ipomoea batatas, Spectrophotometer UV-Vis

K32 - IMMOBILIZATION OF GALLIC ACID ON Mg/Al HYDROTALCITE Dyah Fitriani1 dan Sri Juari Santosa2 1

FMIPA Universitas Bengkulu, email: [email protected]. 2FMIPA Universitas Gadjah Mada, email : [email protected]

Abstract: Immobilization of gallic acid on Mg/Al hydrotalcite has been conducted. Mg/Al hydrotalcite (Mg/Al HT) has been synthesized by coprecipitation method of Mg(NO3)2 and Al(NO3)3 at pH 10 with Mg(II) and Al(III) molar ratio of 2 : 1. The synthesized Mg/Al HT as well as its immobilization product with gallic acid (Mg/Al HTGA) were characterized by X-ray Diffraction and FT-IR Spectroscopy. The effect of pH on immobilization Gallic acid and isoterm adsorption were also studied. Immobilization of gallic acid was reached at pH 5. The analytical result using FTIR and XRD showed that gallic acid has been immobilized on surface of Mg/Al HT with adsorption capacity which was determined according Langmuir isoterm model was 86.957 mg/g. Keywords: Mg/Al hydrotalcite, gallic acid, Langmuir isoterm model.

K33 - STUDI KOMPLEKS ASSOSIASI Hg(II) MENGGUNAKAN KI DAN METHYL GREEN Edi Nasra, Bahrizal, Anisa Eltamala MIPA, Universitas Negeri Padang; [email protected]

Abstrak: Telah dilakukan penelitian tentang studi kompleks assosiasi Hg(II) menggunakan KI dan Methyl green. Penelitian ini bertujuan untuk mencari kondisi optimum kompleks assosiasi Hg(II) seperti konsentrasi iodin, pH larutan, dan konsentrasi methyl green. Metoda pengukuran yang digunakan yaitu metoda spektrofotometri UVVis. Hg(II) direaksikan dengan iodin berlebih membentuk kompleks anion (HgI 42-). Kompleks anion yang 10


Kumpulan Abstrak Kelompok Kimia (K) terbentuk kemudian direaksikan dengan kompleks kation Methyl green (MG) sehingga terbentuk kompleks assosiasi. Dari hasil penelitian diperoleh kondisi optimum iodin terhadap pembentukan kompleks anion (HgI 42-) pada konsentrasi 0,35 dengan absorbansi 0,538 pada panjang gelombang maksimum 348 nm dan pH optimum diperoleh pada pH 5 serta konsentrasi optimum methyl green pada konsentrasi 0,0014%, dengan nilai absorbansi 0,599. Kompleks assosiasi yang dihasilkan dikontakkan dengan zeolite alam yang diperoleh dari kabupaten Solok. Nilai absorbansi yang diperoleh sebelum dan sesudah ekstraksi 0,599 dan 0,002. Kata kunci: Kompleks assosiasi, merkuri(II), Methyl green, Spektrofotometri UV-Vis

K34 - KEMAMPUAN CAMPURAN GAMBUT DAN SEKAM PADI UNTUK MENGURANGI TINGKAT PENCEMAR ORGANIK (BOD, COD) DARI AIR BUANGAN TPA SAMPAH MUARA FAJAR KODYA PEKANBARU Elva Yasmi Amran Universitas Riau

Abstrak: Penelitian ini dilakukan di Laboratorium Pengujian Dinas Kimpraswil Provinsi Riau, Laboratorium Program Studi Pendidikan Kimia FKIP UR dan Laboratorium Pengelolaan Kualitas Air Fakultas Perikanan UR. Penelitian bertujuan untuk mempelajari kemampuan campuran gambut dan sekam padi sebagai material penyerap zat pencemar organik (BOD, COD) dalam air buangan TPA sampah Muara Fajar.Variabel yang dipelajari untuk mendapatkan kondisi optimum penyerapan yaitu : perbandingan berat gambut dan sekam padi, pH larutan, waktu kontak dan suhu pemanasan sorben. Pengukuran terhadap bahan organik dengan pendekatan terhadap nilai COD dan BOD menggunakan metode titrasi. Penurunan kadar COD dan BOD mencapai titik maksimal pada waktu kontak 60 menit. Perbandingan gambut dan sorben 1 : 1, suhu pemanasan sorben 60°C, waktu kontak 60 menit, pH = 5. Efisiensi penyerapan sorben campuran gambut dan sekam padi dengan pendekatan nilai COD = 87,36% dan BOD 78,02%. Kata kunci: Campuran gambut dan sekam padi, BOD dan COD

K35 - KARAKTERISTIK SENYAWA ISOPULEGOL TERKAPSULASI SERTA UJI AKTIVITASNYA SEBAGAI ANTI OKSIDAN DAN ANTI BAKTERI Elvina Dhiaul Iftitah, Ravika Endriyana Safitri Fakultas MIPA, Universitas Brawijaya Malang; Email : [email protected]

Abstract: Research on characteristic of microencapsulated isopulegol was aimed to determine the ideal proportion between maltodextrin and arabic gum as coating material and how the antioxidant and antibacterial activity. The ration between maltodextrin and arabic gum were studied in 1:1 2:3 and 3:2. Microencapsulation was carried out by freez drying. The optimum condition for microcapsules were determined based on entrapped isopulegol through the FTIR spectra and micrograph image from SEM (Scanning Electron Microscopy). The antioxidant avtivity were determined by the 2,2-diphenyl-1-picrylhydrazil (DPPH) method. Antibacterial activities were measured by paper disc diffusion of isopulegol against Escherichia coli. Microcapsules at a ratio of 3:2 was found to have better characteristics with porous and particle size of microscale. Antioxidant activity has EC50=24974 ppm. Antibacterial activity has strong inhibition toward E.coli growth around 13.3 mm. Keywords: Microencapsules, Isopulegol, antioxidant, antibacterial

K36 - PENGGUNAAN PARAMETER GEOKIMIA MOLEKULAR UNTUK MENENTUKAN KORELASI MINYAK BUMI BLOK BANGKO–ROKAN HILIRDENGAN MINYAK BUMI DURI-BENGKALIS, RIAU Emrizal Mahidin Tamboesai Jurusan Kimia, FMIPA, Universitas Riau; email: [email protected]

Abstract: The demand for crude oil in Indonesia is much higher than its production which leads to current energy crisis. One of solutions for this crisis is to conduct correlation study, which determines the genetic relationship at each oil well. This study could assist to provide the indication of the genetic relationship (source matter, souce rock and the origins) of Bangko and Duri crude oil. The saturated fraction was analyzed using Gas Chromatography (GC). On the basis of the abudance of hydrocarbon aliphatic, the crude oils samples have small ratio value, which is 0,38-0,50 forPr/n-C17 and 0,16-0,18Ph/n-C18. This values indicated that the samples were originated from higher vascular plants (terrestrial). The samples derived from lacustrine environments (lake) have ratio valueof Pr/Ph (2,50-2,90). The calculation from Star diagram have showed that the oil samples in area MB-07, MB-026 dan MB-172 of Bangko with the oil sample in Duri (MD-01) are negatively correlated. The negative correlation indicated that the oil samples have different the genetic relationship source matter and different in enhance oil recovery. Keywords: crude oil, correlation study, oil wells, Gas Chromatography, hydrocarbon aliphatic SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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K37 - PREPARATION AND CHARACTERIZATION OF COCONUT OIL EMULSIONS USING DIFFERENT TYPES OF BASES Eni Widiyati Faculty of Mathematics and Natural Sciences, University of Bengkulu; E-mail: [email protected]

Abstract: A research on preparation and characterization of emulsions with coconut oil as raw material and using different types of bases (KOH, NaOH and triethanolamine = TEA) has been done. The purpose of this research was to prepare the emulsions with coconut oil as raw material using stearic soap as an emulgator and to study the effect of base concentration on properties of emulsions. The emulsion was made by mixing a hot (70 o C) of aqueous phase ( aquadest and glycerin ) to the hot (70 oC) of oil phase (coconut oil, stearic acid, lanolin, and cetyl alcohol), then the mixture was added a base while stirring until it reached a temperature of ± 35 oC. To investigate the effect of base concentration on properties of emulsions, the concentration of KOH, NaOH, and TEA as a base were added with varied concentrations. The emulsions were determined physical and chemical properties, such as form, color, pH, and viscosity. The results show if the base concentration increase, the pH and the viscosity of emulsions will also increase. The emulsions with KOH and TEA as a base are more stable than the emulsion with NaOH as a base. This mean that concentration of base affects the properties of emulsions, especially pH and viscosity, and the types of bases affect the stability of emulsions. Keywords: preparation and characterization, emulsions, coconut oil, base concentration, properties of emulsions

K38 - PENGEMBANGAN PANDUAN PRAKTIKUM IPA-KIMIA SMP/MTS BERBASIS LINGKUNGAN Erviyenni Laboratorium Pendidikan Kimia FKIP Universitas Riau Pekanbaru, Erviyenni,@gmaill.com

Abstrak: Desain perangkat pembelajaran melalui pengembangan panduan praktikum kimia SMP berbasis lingkungan yang dapat digunakan sebagai media pada kegiatan pembelajaran di sekolah. Panduan dirancang mengacu kepada alat dan bahan yang murah, mudah didapat dan ada yang berupa limbah di sekitar siswa Pengembangan perangkat mengikuti diagram alir yang terdiri dari beberapa tahap yakni tahap pendefinisian, perancangan dan pengembangan. Kualitas panduan meliputi unsur kerelevanan, fleksibel, sistematika sajian dan penggunaan bahasa yang mudah dimengerti siswa. Pengujian validitas panduan meliputi syarat didaktik, konstruksi dan teknis. Validator terdiri dari dua orang dosen, satu orang guru kimia SMA dan satu orang guru sain SMP/MTs. Hasil penelitian adalah tersusunnya 6 panduan praktikum IPA-Kimia SMP berbasis lingkungan yang dinyatakan valid oleh validator dengan nilai rata-rata untuk syarat didaktik dengan kategori baik (memenuhi semua indikator), syarat konstruksi termasuk kategori valid/baik/layak dengan persentase 92.2 dan syarat teknis juga berada pada kategori baik dengan persentase 82.5. Kata kunci: Pengembangan, panduan praktikum, kimia SMP, berbasis lingkungan

K39 - ANALISIS KETERLAKSANAAN PENDEKATAN CTL DAN MODEL PBL SERTA HUBUNGANNYA DENGAN HASIL BELAJAR SISWA PADA POKOK BAHASAN LARUTAN ASAM DAN BASA DI SMAN 8 KOTA JAMBI Pudya Zuheiria, Fatria Dewi Program Studi Pendidikan Kimia Jurusan PMIPA FKIP Universitas Jambi, Email : [email protected]

Abstrak: Penelitian ini dilatarbelakangi oleh masih kurangnya siswa berpartisipasi aktif dalam pembelajaran kimia khususnya materi larutan asam dan basa sehingga hasil belajar kurang optimal. Sehubungan dengan itu pendekatan dengan model pembelajaran merupakan salah satu solusi untuk mencapai tujuan pembelajaran serta dapat mengembangkan dan meningkatan aktivitas dan hasil belajar siswa. Jenis penelitian yang dilakukan adalah Eksperimen, yaitu quasi-eksperiment. Desain yang digunakan adalah One Shot-Case Study. Teknik pengambilan sample yang digunakan adalah simple random sampling dengan cara undian, diperoleh kelas XI IPA 5 sebagai kelas eksperimen. Adapun instrumen penelitian yang digunakan adalah lembar observasi aktivitas guru dan siswa dalam pelaksanaan model dan tes berbentuk pilihan ganda. Analisis yang digunakan adalah analisis regresi linier dan dengan uji signifikasi untuk mendapatkan hasil t hitung. Uji prasyarat menggunakan uji normalitas dan uji homogenitas. Analisis data menunjukkan pelaksanaan pendekatan CTL dengan model PBL dikategorikan baik, berdasarkan lembar observasi aktivitas gurupada pertemuan pertama, kedua dan ketiga memiliki rata-rata persentase 80% dan siswa 75,08%. Data dianalisis secara kuantitatif menggunakan rumus persentase. Sementara itu untuk hasil belajar, dari analisis data menunjukkan (hasil posttest) rata-rata nilai kelas eksperimen 80,1. Data hasil belajar juga dianalisis secara kuantitatif dengan product pearson momen yang menghasilkan nilai (+) 0,37 dan menggunakan uji signifikasi untuk memperoleh thitungdan diperoleh hasil uji hipotesis yaitu thitung= 12


Kumpulan Abstrak Kelompok Kimia (K) 1,854 dan ttabel = 1,692 dengan dk 33 dan α = 0,05. Dari uji hipotesis menunjukkan thitung > ttabel(1,852 > 1,692) pada taraf kepercayaan 95%. Berdasarkan hasil penelitian dan pembhasan dapat disimpulkan bahwa terdapat pengaruh yang positif dan signifikan antara pelaksanaan pendekatan CTL dengan model PBL terhadap hasil belajar siswa pada pokok bahasan larutan asam dan basa di SMA N 8 Kota Jambi. Kata kunci: Analisis,Pengaruh, Pendekatan CTL, Model PBL, Hasil Belajar, Larutan Asam dan Basa

K40 - THERMOSTABLE ENZYMES FROM JABOI SABANG ISOLAT: EFFECT OF FERMENTATION TEMPERATURE Febriani1, T.M. Iqbalsyah1, Frida Oesman2 1

Chemistry Department, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, e-mail: [email protected]. Pharmacy Department, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, e-mail: [email protected] 3

Abstract: Thermophilic microorganisms could be produced thermostables enzymes of the highly potential application for the research and industry.The goal of this study was investigatedeffect of fermentation temperature to the enzymes activity such as protease, lipase, celullase and α-amylase from Jaboi Sabang Isolate. The Jaboi Sabang isolate was identified morphology based on Gram staining and Scanning Electron Microscopy as Geobacillus sp. The Jaboi Sabang isolate showed the highest biomass when incubated temperature of 65 oC after incubation periods 13 hour. The highest activity of protease (16,9 U) was found in 30 hours incubation period on 70 ˚C. The fermentation temperature of 70 oC also showed the highest lipase activity (11,8 U) after incubation periods 14 hour. In addition, the cellulase and α-amylase activity showed highest activity at temperature 70oCand 72oC, with activityenzymes of 1,678 U/g dan 1,882 U/g .respectively by using Solid State fermentation. The high activity of thermostable enzymes suggested that the Jaboi Sabang isolate was identified as unique local isolate and have potential to produce thermostable enzymes. Keywords: Thermostable enzymes, α-amylase, protease, lipase cellulase, and Jaboi Sabang Isolate

K41 - PEMANFAATAN LIMBAH KULIT BUAH JENGKOL (Pithecellobium DALAM PEMBUATAN BIO-BRIKET

jiringa (jack) prain.)

Rayandra Ashyar1), Widya Sulastri2), Sufri3), Fuldiaratman3), M. Imaduddin al-Islami3) 1)

Program Magister Pendidikan Kimia Pascasarjana Universitas Jambi, Indonesia. 2)Jurusan Kimia Fakultas Sains dan Teknologi Universitas Jambi, Indonesia. 3)Jurusan Pendidikan MIPA FKIP Universitas Jambi, Indonesia

Abstract: Utilization of Jengkol shells (Pithecellobium jiringa (jack) prain.) waste as raw materials for the preparation of bio-briquettes using starch as binder was investigated. The investigation aimed to study the feasibility of the use of the by-product as an alternative biofuel i.e. bio-briquette. The production processes were started by carbonization of raw material in a cylindrical kiln followed by grinding and filtering out charcoals to obtain various smaller size particles (60, 80, 100 and 150 mesh). The briquettes were made by adding various amounts of starch as binder (5, 7.5, 10, 12.5, 15%w/w). The quality of the briquettes were evaluated by analysis of physical parameters including heating value, ash content, water content, and volatile matter contents and conducting water boiling tests. The briquettes produced were comparable in calorific value to commercial ones. Based on the experimental data it can be concluded that the bio-briquettes derived from jengkol shell waste can serve as alternative fuel since it shows superior combustion characteristics over fuel wood and the material isreadily available in our environment. Keywords: Alternative fuel, binder, bio-briquette, jengkol shell, waste, starch.

K42 - Efektivitas Ektrak Biji Pepaya(Carica papaya) terhadap Peningkatan Kematian Cacing Hati Kambing (Fasciola hepatica)In Vitro Grace Thresia Nainggolan 1), Muhammad Fikriansyah2), Gusti Aulia Nasution 3), Hamidatun Nisa4), Minda Syafina 5), Nora Susanti 6) 1234

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan. 56 Koordinator Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan; email: [email protected]

Abstract: Garica Papaya,L.(local name: papaya) is a well fruit‟s seeds in Indonesia one of each is have the effect toward the death of Goat Worm (Fasciola hepatica)in vitro. Experimental laboratoric, with post-test only control group design using 6 groups (NaCl 0.9% for negative control, extract of papaya seeds with 10%, 15%, 20%, 25% of concentration, also pyrantel pamoate as the positive control with Combantrine as the trademark). Observation is done by using purposive sampling method. The worm is incubated in 37oC. Data analyzed done calculate the amount of worms and the time until the its was died. It shows that the extract of papaya seeds of each concentration has effect of anthelmintic. From the result it can be concluded that the extract of papaya seeds has SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) effect to increase the death of Fasciola hepatica In vitro and have the effectivity better than pyrantel pamoate. In 10% need 26.3 minutes, 15% need 24 minutes, 20% need 9.3 minutes, 25% need 4,3 minutes concentration and pyrantel pamoate need 4,7 minutes. It showed that 25% concentration better then pyrantel pamoate to increase death of the worms. Keywords: Antihelmintik, extract of papaya seeds, pyrantel pamoate, Fasciola hepatica

K43 - Keanekaragaman dan Kandungan Kimia Tamarillo sebagai Buah Endemik Sumatera Utara Gusti Aulia Nasution1), Grace Thresia Nainggolan2), Muhammad Fikriansyah3), Eriadi Koto4), Nora Susanti6) 123

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan. 45 Koordinator Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan. email: [email protected]

Abstract: Tamarillo (local name Terung Belanda) is a well known fruit in North Sumatera, Indonesia. It is widely cultivated in areas surrounding The Toba Lake. The diversity and chemical content of this fruit were determined in four districts around Toba Lake; The Karo, Dairi, Samosir, and Humbang Hasundutan districts. The result showed that there was a different in flower color, Humbang Hasundutan and Karo tamarillo flower was pink while Dairi and Samosir tamarillo flower was purplish. The fruit skin color was red with variation of dark spot; no dark spot (Karo and Samosir), uneven dark spot (Dairi) and even dark spot (Humbang Hasundutan). The chemical content obtained from freshly picked fruits from all four areas were protein (1.60 – 1.97 % w/w) using semi micro Kjeldahl, fat (0.10-0.70 % w/w) using soxhlet extraction, carbohydrate (10.0-12.7 % w/w) using Luff Schrool. Keywords: Diversity, nutrition, tamarillo, terung belanda, Toba Lake

K44 - ALKALOID FROM CHLOROFORM FRACTION POND APPEL (Annona glabra) LEAF EXTRACT Gustini Syahbirin, Mella Yanti, Purwantiningsih Sugita Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, email: [email protected]

Abstract: Chloroform fraction of pond apple has been reported to betoxicagainst brine shrimp and zebrafish embryo. Total alkaloid extract obtained as 0.95 g (0.1%).Fractionationusing column chromatographyshowed the presence of alkaloidsin D fractionobtained by CHCl3-MeOH (90:10) as theeluent. Based on the results of characterization by LC-MS, UV-Vis and FTIR, the D3 spot is a compound suspected armepavina, LC chromatograms were spots D4 and D5 indicate the presence of a mixture of compounds, so that the content can not be known compounds. Keywords: alkaloid, Annona glabra, armepavina

K45 - Chemical Learning Media Based Chemistry Triangle Using Android Application Hardeli, Yerimadesi, Karlian AB, Widya GS Departement of Chemistry, Padang State Universiy, Indonesia; [email protected]

Abstract: Abstrak- instructional media is one of an alternative which can help students in understanding the abstract material such as chemical equilibrium and thermochemistry materials. This research aims to produce instructional media- chemistry triangle based which is used an android application to chemical equilibrium and thermochemistry materials at XI grade of SMA/ MA and testing the validity and practicalities of instructional media that is produced. The type of this research is Research and Development (R & D) that is used development model of 4-D which consists of 4 stages that are (1) define (2) design (3) develop and (4) disseminate, this research is only reach in develop stage. The research instrument is the form of questionnaire which consists of validity sheet and practicalities sheet. This media has been validated by 3 chemistry lecturers and 2 chemistry teachers. Practicalities test was done by 4 chemistry teachers and 26 students of SMAN 12 Padang. Data analysis was done using the kappa moment formula. From the results obtained by analysis of the validity of the average value of 0.8133 for chemical equilibrium and 0,81 for thermocemistry with very high category validity and the average value of practicalities of teachers about 0.94 for chemical equilibrium and 0,77 for thermocemistry with very high category and for the practicality of the media which is developed for the students about 0.763 for chemical equilibrium and 0,76 for thermocemistry with high practicality category. Based on these data it can be concluded that the instructional media -based chemistry triangle using android application for chemical equilibrium material at XI grade of SMA / MA can be used as a media of learning chemistry in SMA / MA. Keywords: Chemistry Triangle, thermochemistry, chemical equilibrium,Learning Media, 4-D Model.

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K46 - ISOLATION AND CHARACTERIZATION OF SECUNDARY METABOLITES FROM ACTIVE FRACTION TO ANTIOXIDANT ASSAY FROM STEAM BARK OF CASTOR BEAN EXTRACT (Ricinus communis Linn) Hasnirwan, Afrizal, Fachri Ihsan Laboratorium Kimia Organik Bahan Alam, Jurusan Kimia FMIPA, Universitas andalas, e-mail : [email protected]

Abstract: Isolation of triterpenoid compounds from the bark of the Ricinus communis Linn had ben done by maceration method using the solvent n-hexane followed by ehtyl acetate and methanol. Toward the three fraction were tested antioxidant activity. From the three fraction which had high antioxidant activity was the methanol fraction with IC50 = 26,79 mg/mL, and the ethyl acetate with fraction IC50 = 80,91 mg/mL. Ethyl acetate fraction in column chromathography used a silica gel as the stationery phase and n-hexane , ethyl acetate as the mobile phase as SGP (Step Gradient Polarity). Isolation result was white solid and had a melting point at 180.3 to 181.5 oC which gave a single stain and pink using Liebermann-Burchard reagent with several e;uent on thin layer chromatography/ Based on the result of the isolation compound test with analysis of infrared spectroscopy data and ultraviolet indicated that the isolation of was a class of triterpenoid compounds with geminal dimethyl region with wave numbers at 1413.64 cm-1, as well as the unconjugated double bond with the wave number at 1455.57 cm-1, with maximum absortion at χ max 202.80 nm. Keywords: Ricinus communic Linn, triterpenoid, antioxidant

K47 - THE BIOLOGICAL ACTIVITY TEST OF Î² SITOSTEROL ISOLATED FROM PALM OIL WASTE Hazli Nurdin STF Indonesia

K48 - Pembuatan Bahan Baku Membran Berbasis Ester dari Selulosa Mikrobial secara Enzimatis Helmi Auliyah Istiqomah, Anna Roosdiana, Diah Mardiana, Ellya Indahyanti, Arie Srihardyastutie Jurusan kimia, FMIPA, Universitas Brawijaya, [email protected]

Abstrak: Selulosa mikrobial merupakan selulosa yang dihasilkan oleh mikroorganisme, Acetobacter xylinum. Selulosa mikrobial memiliki kemurnian yang tinggi karena tidak mengandung kontaminan polisakarida, seperti lignin atau hemiselulosa.Telah dilakukan pembuatan bahan baku membran dengan reaksi esterifikasi secara enzimatis menggunakan selulosa mikrobial dan asam sebasat. Biokatalis yang digunakan adalah enzim lipase dari Mucor miehei yang diamobilkan pada matriks kitosan. Tujuan dari penelitian ini adalah untuk menentukan pengaruh waktu reaksi serta rasio massa selulosa dan asam sebasat terhadap pembentukan ester selulosil sebasat, dan mengkarakterisasi ester selulosa yang dihasilkan. Variasi waktu yang dilakukan yaitu (6, 12,18, 24, dan 30) jam dan variasi rasio massa selulosa dan asam sebasat yang digunakan yaitu (1:1, 1:2, 1:3, 1:4, 1:5, 1:6, dan 1:7). Massa selulosa dan lipase yang digunakan untuk esterifikasi masing-masing sebesar 0,1 g. Esterifikasi dilakukan pada temperatur 50˚C. Karakterisasi ester selulosil sebasat dilakukan melalui penentuan indeks swelling) dan analisis gugus fungsi menggunakan FTIR. Hasil penelitian menunjukkan bahwa waktu optimum esterifikasi dicapai pada 24 jam dan rasio optimum berat selulosa dan asam suksinat 1:6 dengan derajat esterifikasi sebesar 1,53 dan indeks swelling sebesar 59,03%. Hasil analisis menggunakan FTIR menunjukkan adanya puncak serapan gugus C=O ester pada bilangan gelombang 1780 cm-1 dan puncak serapan C-O ester pada bilangan gelombang 1163 cm-1. Kata kunci: Asam sebasat, Bakterial selulosa, selulosa ester, indeks swelling

K49 - Synthesis and Characterization of Degradable Plastic Based on Onggok Fiber, Chitosan and Polyvinyl Alcohol Hendrawati, Hafiz Akhyar Chemistry Department of Faculty of Science and Technology Islamic State University (UIN) Syarif Hidayatullah Jakarta. Jl.Ir.H. Juanda No. 95 Ciputat Banten Indonesia; [email protected]

Abstract: Degradable plastic (Film) was prepared by mixtured on fiber onggok, chitosan, and polyvinyl alcohol (PVA). Onggok fiber which been used comes from onggok starch hydrolysed enzymatically by using the amylase. Chitosan that been used is resulted from shells isolated. This research aimed to get film that has high quality mechanical properties, thermal and degradibility. Films was synthesized with blending and casting methods. The result was film that been characterized in its mechanical properties, thermal properties, chemichal structure, surface morphology, swelling test and degradation test. The best results on the tensile strength of film C4 at 34.79 Mpa. Blend of film C4 was onggok+chitosan+PVA (0.3+1.2+ 0.3). The best of elongation at break was obtained film B4 was 76 %. Blend of film B4 was onggok+chitosan+PVA (0.3+0.3+1.2g ). The results of swelling film, largest swelling film B4 was 42.78 %. The result of thermal properties showed there was shift of melting point of the film samples between 496-543 oC. The results of degradation against UV, largest degradation SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) C3 was 14,36 %, while the largest degradation in soil burial test film C3 was 44,84 %. Blend of film C3 was onggok+chitosan+PVA (0.3+0,9+0.3g). Based on the statistical analysis of ANOVA and Duncan test from physical / mechanical, swelling, degradation rate and morphologic, appearance of film C3 is the best blend. Keywords: film, onggok fiber, chitosan, polyvinyl alcohol.

K50 - PENINGKATAN AKTIVITAS DAN HASIL BELAJAR MAHASISWA DENGAN PENERAPAN TUTOR SEBAYA PADA MATA KULIAH KIMIA ORGANIK 1 Herdini, Susilawati Program Studi Pendidikan Kimia FKIP Universitas Riau Pekanbaru, Email : [email protected]

Abstrak: Penelitian ini merupakan penelitian tindakan kelas yang bertujuan untuk meningkatkan aktivitas dan hasil belajar mahasiswa pada mata kuliah kimia organik 1. Subjek dalam penelitian ini adalah mahasiswa program studi pendidikan kimia FKIP Universitas Riau yang mengikuti perkuliahan kimia Organik 1 semester ganjil 2015/2016. Penelitian ini dilakukan dalam 2 siklus, dan masing-masing siklus terdiri dari 2 kali pertemuan. Data yang dikumpulkan adalah berupa data aktivitas mahasiswa selama proses pembelajaran, aktivitas tutor serta hasil belajar mahasiswa setiap siklus. Data yang diperoleh dianalisis secara deskriptif. Setelah analisis data dilakukan diperoleh hasil sebagai berikut : Rata-rata aktivitas belajar mahasiswa meningkat dari 40 % (pra siklus), menjadi 57% (siklus I) 63% (siklus II), aktivitas tutor dalam membimbing dan mengarahkan mahasiswa meningkat dari 61% (Siklis I) menjadi 72% (siklus II, sedangkan rata-rata hasil evaluasi mahasiswa meningkat dari 65 menjadi 75 Kata kunci: Tutor sebaya, Kimia Organik 1

K51 - ADSORPSI MINYAK DARI SAMPAH PLASTIK POLIPROPILEN MENGGUNAKAN CAMPURAN BENTONIT/KARBON AKTIF YANG TERAKTIVASI KOH Heriyanti, Restina Bemis, Marfizal, Affan Malik, Sutrisno Program Studi Kimia Industri Diploma 3, Fakultas Sains dan Teknologi, Universitas Jambi, email: [email protected]

Abstract: One of the development of alternative and renewable energy as a solution to reduce the dependence on fuel oil is the conversion of plastic waste to oil by pyrolysis. It also offers a way of solving problems of plastic waste management. The purpose of this study is to improve the quality of oil from plastic waste propylene through the adsorption process and characterization of bentonite and activated carbon as an adsorbent. The pyrolysis have done at 300oC for 3 hours. The adsorbent used is a mixture of bentonite and activated carbon were activated with KOH. The variations in the ratio of the mixture is 40:50 and 55:45. The adsorption results showed that an increase in oil calorific value of 2% for oil from plastic waste propylene clear and colorless and gasoline as a comparison. While the value of oil sulfur content is reduced by 11.3%, 23.3%, and 12.3% for oil from plastic waste propylene clear and colorless and gasoline, respectively. The characterization of bentonite and activated carbon by XRD analysis showed that the compounds in the bentonite is calcite (CaCO 3) with the highest intensity of 100% at 2θ of 29.6231 and the structure of activated carbon from palm shell is amorphous compounds SiO2. Keywords: polypropylene, pyrolisis, bentonite, activated carbon, adsorption

K52 - Metode Spesiasi Kromium Menggunakan Oksidator Hipoklorit dan Persulfat Secara Spektrofotometri Hermin Sulistarti 1,2), Naema Souf 1,2) , Lilik Suryati 1,2), Sri Wardhani(1,2) 1

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya Malang, 2LCAMIA Research Group, Universitas Brawijaya Malang. E-mail: [email protected]

Abstract: Hypochlorite and persulfate have been studied for oxidizing chromium(III) to chromium(VI) in order to simplify the existing standard spectrophotometry for chromium speciation based on the formation of a redviolet complex of chromium(VI)-Diphenylcarbazide. These colorless oxidizing agents were expected to eliminate decolorizing step of potassium permanganate used in spectrophotometric standard method. The important chemical parameters were optimized with respect to sensitivity and analysis time, resulting optimum conditions of oxidant concentrations of 10-3 M (hypochlorite) and 8.10-2 M (persulfate), pH solution of 1, and oxidation times of 16 and 8 minutes for the respective oxidizing agents of hypochlorite and persulfate. Under these conditions, both oxidants oxidized chromium(III) proportionally and performed similarly to that of potassium permanganate. The method gave result to linear calibration over the range of 0.1-1 ppm and 1-5 mg/L for the respective oxidants of hypochlorite and persulfate with high accuracy and precision. The proposed method offers advantages of simple and rapid analysis without any de-colorization of the excess of oxidizing agent prior to spectrophotometric measurement. Both oxidants were successfully validated and applied to assay chromium speciation in water samples with satisfactory results.

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Kumpulan Abstrak Kelompok Kimia (K) Keywords: Chromium, speciation, hypochlorite, persulfate

K53 - EDIBLE PACKAGING FROM JANENG (Discorea hispida) STARCH-CHITOSAN BLEND FILM Hira Helwati, Narlis, Saiful, Rahmi Chemistry Department, Faculty of Mathematics and Science, Syiah Kuala University, Banda Aceh, Indonesia, [email protected]

Abstract: Aplication of Edible film from blended janeng starch-chitosan as foods packaging, especially fruits and vegetables has been studied. Blending of starch janeng with chitosan aiming to improve the mechanical properties of the edible film especially for water resistance properties, as well as take advantage of the antimicrobial activity of the chitosan. Optimum condition to obtain the best edible film was performed by preparation of various concentrations of janeng starch, chitosan, and plasticizers. The clear and best charcteristic films obtains at ratio Janeng starch: chitosan 1, 6:1, 4(%w/v) with plastisizer 1, 2% of glycerol or 3% palm oil. The film degraded 100% after eight days on various types of soils where the film contained palm oil degraded faster than glycerol contained film. Aplication of the edible films as fruits wraping shows that the film could mantainced the fruits as best as sintetic plastics. Keywords: Janeng strarch, Chitosan, Edible bioplastic, blending

K54 - THE ZEOLITE X FROM LIGHT FRACTION OF NON MAGNETIC ASH RESIDUAL BURNING OF PALM OIL SHELLS Iis Siti Jahro, Tita Juwitaningsih, Rini Selly MIPA, Universitas Negeri Medan; email: [email protected]

Abstract: Palm oil factory produce palm oil shells and ash palm oil shells wastes around 63,523.00 and 9,528.45 tons in a year. Palm oil shells ash causes pollutions of air, water and soil which damage the health of people around the palm oil factory. The ash of palm oil shells contain 63.5% of SiO 2 and and 8.6 % of Al2O3 so it can be used as a material to synthesize a zeolite. Zeolite X has been successfully synthesized from light fraction of non-magnetic ash of palm oil shells through the hydrothermal reaction at a temperature of 60 and 120 ° C. The infrared spectra of zeolite X showed absorption bands in the wave numbers area of 400-500; 550-750 and 9001200 Cm-1. The quality of zeolite X affected by the purity of palm oil shells ash, the ratio of Si to Al and the amount of Na2EDTA addition. Keywords: Zeolite X, palm oil shells, the hydrothermal reaction, the infrared spectra

K55 - Complexation Study of NH3 with Co2+ for Ammonia Analysis in water Indang Dewata1,2& Alizar Ulianas1,2 1

Department of chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Sumatera Barat, Indonesia. 2Research Center of Population, Environment and Disaster, Universitas Negeri Padang, Sumatera Barat, Indonesia. E-mail: [email protected];[email protected]

Abstract: Ammonia (NH3) is a toxic compound that can be found in the water, in addition of ammonia in water is also found in the form of ammonium ions. Ammonia can be toxic to humans if the amount taken into the body exceeds the amount that can be detoxified by the body. At doses higher than 100 mg/kg daily (33.7 mg ammonium ions per kg of body weight per day) can affect metabolism by changing the acid-base balance in the body, interfering with glucose tolerance and reduced tissue sensitivity to insulin. We analyzed the complexation of NH3 with Co2+ by spectroscopic methods. The results show that the complexation may occur at pH 8 with a wavelength of absorption at 584 nm. Complexation so on can be used for analysis of the amount of ammonia in the liquid sample with spectrophotometry method. This analysis method is useful for controlling environmental pollution in river water. Keywords: Ammonium, Cobalt (II), Complexation

K56 - Studies Kinetic, Equilibrium and Thermodynamic on Biosorption Zn(II) From Aqueous Solution by Alginate Immobilization Durian (Durio zibethinus) Seed Intan Lestari1, Admin Alif2, Rahmiana Zein2 and Hermansyah Aziz2* 1) 2)

Department of Chemistry, Faculty of Science and Technology, Jambi University, E-mail : [email protected]. Department of Chemistry, Faculty of Mathematics and Natural Science, Andalas University, *E-mail : [email protected]

Abstract: Immobilization of biomass durian seed powder into Ca-alginate polymer matrix has been done. Immobilized to improve the reliability and the mechanical strength of the biomass in the media solution. Alginate immobilized durian seed used biosorption of Zn(II) fromaqueous solution. In this paper studied the kinetics, equilibrium and thermodynamics biosorption Zn(II) at different experimental conditions. The effect of parameter Zn(II) biosorption learned was pH5, contact time 120 minutes, Zn(II) concentration 300mg/Land SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) temperature 45oC. The maximum capacity biosorption that 21,598mg/g. Kinetics study showed that the process of biosorption followed pseudo second-order models, equilibrium biosorbtion following Langmuir isotherm model with R2=0.9571 and thermodynamic parameters (ΔG, ΔH and ΔS) shows that biosorbtion Zn(II) occurs spontaneously, endothermic and feasible. Keywords: Biosorption, durian (Durio zibethinus) seed, immobilization, Zn(II) , alginate.

K57 - Sintesis Membran Penghantar Proton Berbasiskan Polisulfon Dengan Tinjauan Pengaruh Pelarut Irfan Gustian Jurusan Kimia FMIPA, Universitas Bengkulu, Jalan Raya Kandang Limun Bengkulu, 38371, [email protected]

Abstract: Synthesis proton conducting membranes with homogeneous method based on polysulfone has been done. The solvent chloroform and 1,2-dichloroethane were used, polysulfone as sulfonated backbone have sulfonation using trimethylsilyl chlorosulfonat as sulfonating agent. Degree of sulfonation were determined by titration, the analysis of the functional group was determined using FTIR, thermal stability properties has determined using the TGA, and proton conductivity has determined using Impedance Analyzer.From the results shows that the sulfonated polysulfone using 1,2-dichloroethane (optimum 136%) greater than the sulfonated polysulfone using chloroform (optimum 25%).From FTIR analysis indicate difference spectrum of sulfonated polysulfone and polysulfone in the area of wave number around 3500 cm-1 and the absorption band region near 1041 cm-1, there are indicating stretching vibration of O-H and asymmetric stretching vibration of O = S = O from the group sulfonate -SO3. The TGA analysis for sulfonated polysulfone 136% showed stability up to 200°C. Proton conductivity membrane sulfonated polysulfone obtained 7.94 x 10-5 S cm-1 at 150°C. Keywords: Proton conducting membranes, polysulfone, Sulfonated polysulfone, chlorofor, and 1,2dichloroethane.

K58 - TEKNIK IN VITRO MELALUI SUBKULTUR JERUK KEPROK BRASTAGI (Citrus nobilis BRASTEPU) UNTUK MENGHASILKAN BIBIT BEBAS PENYAKIT CVPD Isnaini Nurwahyuni dan Riyanto Sinaga Departemen Biologi, FMIPA, Universitas Sumatera Utara, Kampus USU Padang Bulan Medan, Sumatera Utara, Indonesia 20155, E-mail: [email protected]

Abstrak: Penyakit Citrus Vein phloem Degeneration (CVPD) merupakan salah satu penyakit pembunuh massal yang pernah menyerang Jeruk keprok Brastagi (Citrus nobilis Brastepu) sehingga varietas jeruk lokal Sumatera Utara ini menjadi langka dan terancam dari kepunahan. Beberapa keunggulan genetika jeruk Brastepu yaitu memiliki cita rasa manis, bentuk dan warna buah menarik, ukuran buah besar, kuantitas buah banyak, dan kulit buah dan daun mengandung senyawa bioaktif yang dapat dipergunakan sebagai obat tradisionil. Jeruk Brastagi pernah menjadi buah unggulan Sumetera Utara, namun saat ini sudah jarang ditemukan di pasar lokal. Jeruk lokal Brastagi sudah ditinggalkan oleh petani dan diganti oleh “Jeruk Madu” karena rentan terhadap penyakit CVPD yang membunuh jeruk lokal Brastagi secara massal beberapa tahun silam. Dengan demikian, diperlukan usaha untuk menyediakan bibit jeruk keprok Brastagi bebas CVPD melalui teknik in vitro. Penelitian ini bertujuan untuk perbanyakan jeruk keprok Brastagi bebas penyakit CVPD secara teknik in vitro melalui subkultur sehingga tersedia bibit kualitas baik untuk mengatasi kelangkaan jeruk lokal Brastagi menjaga kekayaan plasmanuftah tanaman jeruk Indonesia terhindar dari kepunahan. Penelitian bersifat eksperimental dan dilakukan secara in vitro melalui teknik subkultur untuk memperoleh bibit jeruk bebas CVPD. Teknik in vitro dilakukan menggunakan berbagai sumber eksplanyang disubkultur pada media MS dengan variasi zat pengatur tumbuh (zpt) auksin dan sitokinin, disertai suplemen ekstrak malt, glutamin, dan air kelapa yang dapat mempengaruhi pertumbuhan dan perkembangan jeruk di dalam media kultur.Hasil penelitian menunjukkan bahwa subkultur jeruk Brastepu menunjukkan pertumbuhan yang baik. Kondisi paling baik diperoleh pada perlakuan dengan dua kali subkultur, bobot kalus tertinggi diperoleh pada perlakuan D1B1 menggunakan 0,5 mg/L 2,4-D dan 0,5 - 1,0 mg/L BAP menghasilkan kalus 2,82 g. Jumlah embriosomatik tertinggi diperoleh pada D1B2 menggunakan 0,5 mg/L 2,4-D dan 0,5 - 1,0 mg/L BAP dihasilkan 24,80 embriosomatik. Kondisi terbaik di dalam menghasilkan tunas adalah pada perlakuan D1B2 dihasilkan rata-rata 4,00 tunas. Analisis jarak Duncan (P = 0,05) menunjukkan pengaruh perlakuan berbeda nyata terhadap pertumbuhan dan perkembangan kalus, embriosomatik dan tunas jeruk Brastepu. Konfirmasi PCR menunjukkan bahwa semua hasil kultur bebas CVPD. Analisis RAPD terhadap profil pita DNA menggambarkan bahwa DNA sampel jeruk yang diperbanyak secara in vitro tidak menunjukkan perbedaan genetik. Kata kunci: Biokonservasi, jeruk keprok, Citrus nobilis Brastepu, In Vitro, plasmanuftah, Brastagi

K59 - INOVASI PEMBELAJARAN BERBASIS PROYEK UNTUK PENGAJARAN SENYAWA ENOLAT PADA MATA KULIAH KIMIA ORGANIK LANJUT Jamalum Purba dan Manihar Situmorang 18


Kumpulan Abstrak Kelompok Kimia (K) Jurusan Kimia FMIPA Universitas Negeri Medan, Jl. Willem Iskandar Psr V Medan Estate, Medan, Sumatera Utara, Indonesia, 20221, E-mail: [email protected] [email protected]

Abstrak: Pemberlakuan Kurikulum Nasional berbasis KKNI di Indonesia membawa perubahan pola pembelajaran di Perguruan Tinggi yang mendorong pencapaian kompetensi anak didik. Inovasi pembelajaran kimia diperlukan untuk meningkatkan kompetensi mahasiswa supaya belajar kimia lebih bermakna, komunikatif dan memotivasi mahasiswa belajar secara optimum. Penelitian ini bertujuan untuk menghasilkan pembelajaran inovatif berbasis proyek untuk meningkatkan kompetensi mahasiswa pada pengajaran senyawa enolatpada mata kuliah Kimia Organik Lanjut. Penelitian bersifat Research and Depelopment dilakukan di Jurusan Kimia FMIPA Unimed. Langkah penelitian terdiri atas pengembangan bahan ajar dalam bentuk paket proyek mini untuk pengajaran senyawa enolat untuk mendukung peningkatan kompetensi kognetif, afektif dan psikomotor. Materi ajar hasil inovasi distandarisasi dan diimplementasikan dalam pembelajaran pada pengajaran kimia organik lanjut. Hasil penelitian menunjukkan bahwa paket pembelajaran inovatif berbasis proyek untuk pengajaran senyawa enolat telah berhasil dikembangkan berupa paket pembelajaran berbentuk proyek mini yang mencakup kegiatan laboratorium untuk pengajaran senyawa enolat. Pembelajaran berbasis proyek dapat menguatkan cara belajar kimia organik menjadi lebih menarik, menantang, dan membangun kreativitas dan kemampuan berpikir kritis terhadap hubungan materi kuliah dengan percobaan kontekstual. Pembelajaran berbasis proyek dapat memperbaiki cara belajar kimia organik lanjut menjadi lebih sederhana dan mudah dipelajari sehingga kesan pembelajaran yang lebih lama diingat dan meningkatan hasil belajar mahasiswa. Hasil belajar mahasiswa yang diberi perlakuan pembelajaran berbasis proyek (M=88,7±7,2) lebih tinggi dibandingkan terhadap hasil belajar mahasiswa dengan metode konvensional (M=63,3±6,8), dan dua kelompok perlakuan berbeda secara signifikan (thitung 8,102 > ttabel 1,663). Tingkat keefektifan pembelajaran berbasis proyek (98%) lebih tinggi dibaanding dengan pembelajaran konvensional (82%). Paket pembelajaran kimia berbasis proyek sangat sesuai dengan kebutuhan mahasiswa pada pengajaran Kimia Organik Lanjut. Kata kunci: Proyek mini, inovasi pembelajaran, kompetensi, senyawa enolat, organik lanjut

K60 - IDENTIFIKASI MINERAL BATU GIOK TAKENGON ACEH MENGGUNAKAN METODA X- RAY DIFFRACTION (XRD) Julinawati, Irfan Mustafa, Rahmi, Susilawati FMIPA, Universitas Syiah Kuala, email: juli [email protected],

Abstract: Research onthe identificationof mineralsfromJades of TakengonAcehusingXRDmethodhas beendone. Based on dataofXRD, they showed that Jades(Giok) Takengonbelonged to aminerals of silicate. The typesof mineral of Jades(Giok) TakengonareGrossular(Ca3Al2(SiO4)3 from the Garnet group, which is a mineralnesosilicateandthe other type islizardite, (Mg3Si2O5(OH)4, from theSerpentine group, which is themineralof thephyllosilicate. XRDcanalsobe usedas a technique toidentify thetypes ofminerals andthe results obtainedmore quickly and accurately. Keywords: XRD, Minerals, silicate, Jades (Giok), Takengon

K61 - AKTIVITAS BEBERAPA EKSTRAK PELARUT BAWANG PUTIH (Allium sativum Linn) TERHADAP AKTIVITAS Candida albicans Khairan1, Dilla Santhyia1, Nurul Khaira1, Liana Marseila1, Rena Mutia1 Teuku Edi Juanda1, Misrahanum1, Frida Oesman1, Risa Nursanti2, Suryawati3, Muhammad Bahi4 1

Jurusan Farmasi, Fakultas MIPA, 2Jurusan Biologi, Fakultas MIPA, 3Fakultas Kedokteran, 4Jurusan Kimia, Fakultas MIPA, Universitas Syiah Kuala, Banda Aceh, 23111. e-mail: [email protected]

Abstrak: Bawang putih (Allium sativum Linn) diketahui mengandung senyawa organosulfur, senyawa ini merupakan senyawa aktif dari bawang putihdan diketahui mempunyai sifat sebagai antibakteri, antikanker dan antijamur. Penelitian ini bertujuan untuk mengetahui pengaruh beberapa ekstrak pelarut bawang putih terhadap aktivitas jamur Candida albicans. Uji fitokimia terhadap beberapa ekstrak pelarut bawang putih menujukkan bahwa ekstrak petroleum eter (EPE) dan ekstrak metilen klorida (EMK) positif menunjukkan adanya flavonoid dan alkaloid. Sementara, uji fitokimia terhadap ekstrak etil asetat (EEA) dan ekstrak etanol positif menunjukkan adanya flavonoid, alkaloid, saponin dan tanin. Analisis KLT untuk ke empat ekstrak bawang putih menunjukkan bahwa EPE dan EMK diduga mengandung homolog allilsistein dengan Rf nya beturut-turut adalaah 0,58 dan 0.6 dengan menggunakan pelarut toluen:etil aseat (70:30). Sementara EEA dan EE diduga mengandung homolog allicin dengan Rf nya adalah 0,63 dan 0,73. Uji zona hambat dilakukan dengan menggunakan metode KirbyBauer, menunjukkan bahwa EEA menunjukkan aktivitas yang paling tinggi terhadap Candida albicans, diikuti oleh EE, EMK, dan EPE. Zona hambat yang terbentuk diduga disebabkan oleh adanya kandungan senyawa organosulfur yang terkandung dalam ekstrak bawang putih seperti alilsistein, allisin dan beberapa produk dekomposisi lainnya dari senyawa organosulfur. Kata kunci: Bawang putih (Allium sativum), senyawa organosulfur, dan Candida albicans


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K62 - IMPLEMENTASI MEDIA PEMBELAJARAN KIMIA BERORIENTASI CHEMISTRY TRIANGLE DI SMAN SUMATERA BARAT Latisma Dj, Fitria Tri Wahyuni, Ira Mahartika, Rosi Nofriyanti, Hardeli Prodi Pendidikan Kimia Pascasarjana Univ.Negeri Padang, e-mail: [email protected]

Abstract: The main purpose of this study is to examine the effects of the implementation of Chemistry Triangle oriented- instructional media towards learning outcomes of senior high school students. This experimental study used a research subject as much as 9 schools and each school is taken two classes each for the experimental class and control. Selection of schools is done by cluster random sampling method while selecting classes used stratified random sampling method. This experimental research employed 2 x3 Randomized Control-Group pottest Only factorial Design. The level of ability of the students serve as moderator variables. Learning media for the material Hydrolysis of salt, electrolyte solution and nonelectrolytes, and Hydrocarbons were implemented in this study. Data were collected using the students‟achievement final test (posttest).To obtain the most suitable in explaining the students‟ chemistry achievement, t-test and Analysis of Varians (Anova) were used. Result revealed that there is significant main effect of treatment on students‟ achievement in chemistry. Based on the results of the data analysis , we concluded that students‟ learning outcomes using the Chemistry Triangle oriented-learning media, significantly higher than students‟ learning outcomes in learning without Chemistry Triangle oriented media, overall and at each level of student ability, high, medium and low.The mean score of students’ achievement showed that students with the medium ability( Mean score = 75,90) higher than students with low ( Mean score = 63) and high ability ( Mean score = 73). This means that these media provide better results for students with medium ability . Keywords: learning media, chemistry triangle, level of students‟ability, students‟achievement.

K63 - PENGARUH PENINGKATAN KONSENTRASI PVP (POLIVINIL PIROLIDON) K90 TERHADAP LAJU DISOLUSI KETOKONAZOL DALAM SISTEM DISPERSI PADAT Lidia, Risnalia Stifi Bhakti Pertiwi Palembang, [email protected]

Abstract: Research of the influence of increasing the solubility of Ketoconazole to the dissolution rate in solid dispersions using PVP K90 has been done. The purpose of this research to enhance the solubility and dissolution rate of poorly soluble drugs with the effect of solid dispersion ratio Ketoconazole-PVP (Polovinil pyrrolidone) K90 increasing the solubility and dissolution rate. The solid dispersion system using method of dissolution and some ratio of 1: 0.5, 1: 0.25 and 1: 0,125 each comparison is diluted with ethanol and oven temperature of 50-600C for 1 hour. To view the solubility test using the dissolution paddle method in a dissolution medium 900 ml of HCl pH 2.0 and a temperature of 37 ± 0,10C in 50 rpm. The results shows that dissolution on Dp 75 minutes to 1: 0.5 was 47.43%, Dp 1: 0.25 was 64.75%, Dp 1: 0.125 was 29.53%, Cf 1: 0.5 was 23 64, Cf 1: 0.25 was 30.44%, and Cf 1: 0.125 was 26.88%. solid dispersion ratio indicates a higher yield than the physical mixture. The higher of the concentration of PVP K90 occurs barriers recrystallization because the high viscosity of PVP K90 in ketoconazole. Keywords: Ketoconazole, PVP K90,solid dispersion,dissolution rate

K64 - KARAKTERISASI ZEOLIT DARI ABU TERBANG BATUBARA DENGAN METODE PELEBURAN HIDROTERMAL Lince Muis, Madyawati Latief Fakultas Sains dan Teknologi, Universitas Jambi, email: [email protected]

Abstract: Zeolite characterization from coal fly ash with hydrothermal smelting method by varying hydrothermal temperature using KOH activators. Zeolite production conducted by varying the temperature i.e 100ºC, 120ºC and 140ºC. Zeolite will be characterized using X-Ray Diffraction (XRD), Fourier Transform Infra Red (FT–IR), Scanning Electron Microscopy (SEM). In higher temperature 140ºC, diffractogram‟s peak intensity is higher with the main peak is appeared at 2θ (20,67; 20,73; 28,661; 28,734; 34,348; 34,436; 42,11; 42,22). In X-Ray spectrum, the optimum temperature is on 140ºC, Zeolite A and Natrolite Zeolite had been formed. The analysis results using infrared spectrum on the shift of absorption bands which had formed is capable to prove that coal fly ash had formed to the zeolite. Analysis using SEM is confirmed that activated coal fly ash using KOH base with the best temperature is on 140ºC and had reacted into zeolite. Keywords: Fly ash, Coal, Zeolite, Hydrothermal Smelting

K65 - PENENTUAN AKTIFITAS ANTIOKSIDAN EKSTRAK ETANOL DAUN SALAM (Eugenia polyantha Wight), DAUN JAMBU BIJI (Psidium guajava) DAN DAUN JATI BELANDA (Guazumaulmifolia Lamk.) Lusiana1, Sulistiyani2, I Made Artika2 20


Kumpulan Abstrak Kelompok Kimia (K) 1

Jurusan Kimia, FMIPA, Universitas Bengkulu, Bengkulu, [email protected], 2Jurusan Biokimia, FMIPA IPB

Abstract: Various plants have been used traditionally by communities for treatment of cardiovascular disease. In this research, leaf extracts of salam (Eugenia polyantha Wight), jati belanda (Guazuma ulmifolia Lamk.), and guava (Psidium guajava) were studied. This study aims to determine the effect of the antioxidative potential of these extracts. Antioxidative potentials were analyzed using Thiobarbituric acid (TBA) assay by measuring the concentration of Malonaldehyde (MDA). The highest antioxidative potential is showed by leaf extract of salam at 100 ppm which inhibited the concentration of MDA as much as 68.17% and the lowest antioxidative potential is showed by leaf extract of jati belanda 200 ppm which inhibited the concentration of MDA as much as 46,10%. Keywords: Antioxidant, TBA, Eugenia polyantha Wight, Psidium guajava, Guazumaulmifolia Lamk.

K66 - ENFORCEABILITY OF DISCOVERY LEARNING MODEL AND ITS EFFECT ON ATTITUDE OF CREATIVE STUDENTS IN CHEMISTRY LEARNING AT CLASS XI MIA SMAN2 OF JAMBI M. Dwi Wiwik Ernawati, Siti Fatimah Jufri FKIP Universitas Jambi, e-mail: [email protected]

Abstract: A research on the enforceability of discovery learning model and its effect on the attitude of creative students had been carried out. The purpose of this study was to determine the enforceability of discovery learning model and its effect on the attitude of creative student in learning process of solubility and solubility product constant (Ksp) at class XI MIA 5 SMAN 2 Jambi. This study was an associative descriptive study. It was designed with an experimental model of type of One-Shot Case Study. The sample is determined by purposive sampling technique. The enforceability of discovery learning model and students creative attitude were monitored using observation sheets and questionnaires. To see the effect of enforceability model of discovery learning toward creative attitude of students was conducted product moment correlation test and followed by ttest. The results revealed that enforceability of discovery learning model was categorized good, the average value of observation results of teachers and students each meeting. Relationship of enforceability of discovery learning model with attitude of creative student categorized strong (rxy = 0.633), as well as provide significant influence amounted to 4.020 (α = 0.01). It can be concluded that the model of discovery learning in learning process about solubility and solubility product constant at class XI MIA 5 SMAN 2 Jambi has done well so as to develop the attitude of creative student significantly in the learning process. Keywords: Discovery learning models, creative attitude, chemistry learning

K67 - PEMBUATAN KRISTAL TUNGGGAL CuO PADA GEL METASILIKAT M. Misbah Khunur, Danar Purwonugroho, Intan Holy Rahmanita Jurusan Kimia FMIPA UB, Email : [email protected]

Abstrak: Metode gel merupakan metode penumbuhan kristal tunggal yang banyak dikembangkanuntuk sintesis oksida logam. Penumbuhan kristal tunggal CuOpada gel metasilikat dari garam asetatnya dilakukan dengan metode tabung tunggal pada variasi pH 6,5 ; 6,8 ; 7,0 ;7,3 ; dan 7,5 dan konsentrasi NaOH 0,5 M ; 1 M ; 1,5 M dan 2 M. Penumbuhan dilakukan pada suhu kamar selama 15 hari dengan penambahan larutan supernatan Cu(CH3COO)2 yang dicampurkan dengan NaOH di permukaan gel metasilikat yang berisi larutan asam asetat. Karakterisasi kristal hasil sintesis dilakukan menggunakan spektrofotometer IR, XRD, AAS dan SEM.Hasil penelitian menunjukkan bahwa pertumbuhan optimum kristal tunggal CuO terjadi pada pH 7,0. Karakterisasi dengan spektrofotometer IR, XRD, AAS dan SEM membuktikan bahwa kristal hasil penumbuhan mengandung oksida logam CuO. Kata kunci: Gel metasilikat, asetat, CuO, kristal tunggal

K68 - PENGARUH pH dan SUHU TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL KULIT RANTING KAYU MANIS (Cinnamomum burmani) Madyawati Latief, Silvi Leila Rahmi, Ahsan Alfri Fakultas Sains dan Teknologi UNJA.Email: [email protected]

Abstract: The aim of this research was to evaluate the effects of pH and temperature on the antioxidant activity of metanol extract cinnamon twig bark of Kerinci. The reserch conducted by using factorial CRD method with 3 replication. The combination of the treatment of pH and temperature were: 3 - 100 °C, 3-110°C, 3-120 °C, 5-100 °C, 5-110 °C, 5-120 °C, 7-100 °C, 7 - 110 °C, 7-120 °C. The results showed that temperature affected the antioxidant activity of cinnamon twig bark of Kerinci, and pH did‟nt affect the antioxidant activity. There was an interactionof temperature andpH onantioxidant activity. The highest antioxidant activity was at pH 7 and temperature 100oC. Keywords: pH, temperature, antioxidant activity, methanol, cinnamon twig bark. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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K69 - PENGEMBANGAN BAHAN AJAR KIMIA INOVATIF DAN INTERAKTIF BERBASIS MULTIMEDIA UNTUK PENGAJARAN SENYAWA AROMATIK Manihar Situmorang, Jamalum Purba, dan Rumondang Hotmaida Sihombing Jurusan Kimia FMIPA Universitas Negeri Medan, Jl. Willem Iskandar Psr V Medan Estate, Medan, Sumatera Utara, Indonesia, 20221, E-mail: [email protected]

Abstrak: Pengembangan bahan ajar kimia yang inovatif dan interaktif berbasis multimedia perlu dilakukan untuk memenuhi bahan ajar berkualitas dalam meningkatkan kompetensi mahasiswa. Salah satu upaya untuk meningkatkan mutu pendidikan adalah melalui pengadaan bahan ajar bermutu yang dapat memotivasi siswa belajar memanfaatkan kemajuan teknologi terkini. Tujuan penelitian adalah untuk mendapatkan bahan ajar kimia yang standar, inovatif dan interaktif berbasis multimedia untuk pengajaran senyawa aromatik. Pengembangan bahan ajar akan dilakukan melalui inovasi pembelajaran pada pokok bahasan senyawa aromatik yang dapat menolong mahasiswa di dalam pembelajaran dalam mencapai kompetensi sesuai tuntutan KKNI. Bahan ajar dilengkapi fasilitas pembelajaran aktif untuk meningkatkan kegiatan belajar-mengajar kimia secara mudah, efisien, dan berpusat pada diri mahasiswa. Tahapan penelitian dimulai dari pengembangan materi senyawa aromatik, dilanjutkan dengan inovasi melalui integrasi kegiatan laboratorium dan aktivitas pembelajaran luar sekolah, integrasi pembelajaran interaktif menggunakan perangkat multimedia, dan implementasi bahan ajar sebagai media pembelajaran untuk meningkatkan hasil belajar mahasiswa. Tahapan penelitian menunjukkan bahwa bahan ajar inovatif dan interaktif berbasis multimedia untuk pengajaran senyawa aromatic yang standar sudah berhasil dikembangkan. Bahan ajar dikemas terintegrasi dengan kegiatan laboratorium dan aktivitas belajar yang dapat meningkatkan kompetensi mahasiswa. Dari hasil penelitian diketahui bahwa bahan ajar hasil pengembangan sangat efektif dipergunakan untuk meningkatkan hasil belajar mahasiswa pada pengajaran senyawa aromatik. Hasil belajar pada kelompok eksperimen, yaitu kelompok yang diberikan pengajaran menggunakan bahan ajar inovatif (M=89,0±7,3) lebih tinggi dibanding kelompok kontrol yang diajar menggunakan buku pengangan mahasiswa (M=72,4±6,1), dan dua kelompok perlakuan berbeda secara nyata (thitung 7,221 > ttabel 1,319). Bahan ajar hasil pengembangan dapat meningkatkan kegiatan belajarmengajar secara mudah, efisien dan berpusat pada diri mahasiswa sehingga terjadi pergeseran pembelajaran dari Lecture centre learning menuju Student centre learning. Terjadi peningkatan persentase mahasiswa termotivasi belajar mandiri menggunakan bahan ajar inovatif. Kata kunci: Bahan ajar, inovatif, interaktif, multimedia, hasil belajar, senyawa aromatik

K70 - MODIFIKASI KROMATOGRAFI SILIKAGEL UNTUK MEMURNIKAN ASAM LINOLEAT TERKONJUGASI HASIL SINTESIS LINOLEAT MINYAK JARAK Marham Sitorus dan Wesley Hutabarat FMIPA Universitas Negeri Medan (UNIMED), [email protected]

Abstrak: Telah dilakukan pemurnian CLA (Conjugated Linoleic Acid) hasil sintesa risinoleat minyak jarak dengan kromatografi kolom silikagel yang diimpregnasi dengan perak nitrat. Elusi dilakukan secara gradien dengan perbandingan heksana : asetonitril 49 : 1 sampai 40 : 10 dengan kenaikan volume asetonitril dan pengurangan heksana 1 mL. Hasil yang paling baik adalah dengan perbandingan heksana : asetonitril 40 : 10 dengan kadar CLA yang diperoleh 76.05 % atau tingkat pencapaian 90.68 % dibandingkan dengan CLA standar dengan kadar 84.52 %. Kata kunci: CLA, risinoleat, inpregnasi dan perak nitrat

K71 - SIFAT TERMODINAMIK DAN KARAKTERISASI INHIBISI KOROSI NANO-PARTIKEL KITOSAN PADA PERMUKAAN BAJA LUNAK DALAM MEDIA AIR GAMBUT Maria Ernaa*, Emriadi b, Admin Alif b dan Syukri Arief b a

Program Studi Pendidikan Kimia FKIP Universitas Riau, Kampus Binawidya km 12,5 Pekanbaru 28293, bJurusan Kimia FMIPA Universitas Andalas, Padang. email: [email protected]

Abstrak: Telah dipelajari sifat termodinamika dan karakterisasi inhibisi korosi nano-partikel kitosan pada permukaan baja lunak dalam media air gambut menggunakan metode berat hilang pada temperature 30 - 50 oC. Permukaan baja dikarakterisasi berdasarkan spektrum FT-IR dan foto morfologi SEM-EDS. Hasil penelitian mendapatkan nilai Go mendekati nilai -40 kJmol-1. Tanda negative dari energi bebas Gibbs menunjukkan bahwa proses adsorpsi molekul inhibitor pada permukaan baja lunak merupakan khemisorpsi dan terjadi secara spontan. Sedangkan nilai Ho yang juga negative menunjukkan adsorpsi molekul inhibitor merupakan proses eksoterm. Nilai So didapatkan bernilai positif, hal ini menunjukkan bahwa molekul inhibitor secara spontan teradsorpsi pada permukaan baja. Hasil analisis pada permukaan baja lunak memperlihatkan bahwa nanopartikel kitosan teradsorpsi pada permukaan baja membentuk senyawa kompleks. Kata kunci: Inhibitor, Korosi, Nano-partikel kitosan, Termodinamika

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K72 - Synthesis And Characterization of Polysalisilic Acid-Formaldehyde For Cd(II) Adsorption Martina Asti Rahayu1), Rusnadi2), Muhammad Bachri Amran2) 1Fakultas

Sains dan Teknologi, Universitas Jambi, email: [email protected]. 2Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung; email: [email protected]

Abstract: Polysalisilic acid-formaldehyde has been synthesized by condensing salicylic acid with formaldehyde as a cross linking agent at 160±5ᵒC using HCl as catalyst. Characterization of this resin indicated that Polysalisilic acid-formaldehyde polymer has been formed as shown as the presence of -CH2-bridge vibration band which is not found in IR spectrum of salicylic acid as monomer. Absorption band shift of C=O and -OH which is found in Polysalisilic acid-formaldehyde spectrum show that Cd(II) ions has been released from resin using with addition of EDTA. The uptake behavior of Cd(II) metal ions towards synthesized resin has been studied depending on various concentration. The adsorption capacities of the resin for removal Cd(II) were found to be 20.83 mg/g. The sorption data obtained at optimized conditions were analyzed by two parameter isotherm models like Langmuir and Freundlich. The Langmuir were found better to describe the sorption data with high correlation for the adsorption. Keywords: cadmium, adsorption, salysilic acid, resin.

K73 - INOVASI BAHAN AJAR BERBASIS KONTEKSTUAL DALAM BENTUK ELEKTRONIK (EBOOK) UNTUK PENGAJARAN SISTEM KESETIMBANGAN KIMIA Marudut Sinaga dan Manihar Situmorang Jurusan Kimia FMIPA Universitas Negeri Medan, Jl. Willem Iskandar Psr V Medan Estate, Medan, Sumatera Utara, Indonesia, 20221, E-mail: [email protected], dan [email protected]

Abstrak: Inovasi bahan ajar berbasis kontekstual pada pengajaran Kimia Umum perlu mendapat perhatian agar teori yang dipelajari mahasiswa di dalam kelas di dukung oleh kenyataan yang ada dalam kehidupan sehari-hari. Tujuan penelitian adalah untuk mendapatkan bahan ajar inovatif berbasis kontekstual yang dikemas dalam bentuk elektronik (e-book) untuk meningkatkan hasil belajar mahasiswa pada pengajaran Sistem Kesetimbangan Kimia. Tahapan penelitian adalah pengembangan bahan ajar melalui pengayaan materi sistem kesetimbangan berbasis kontekstual, Melakukan inovasi melalui integrasi kegiatan laboratorium dan aktivitas pembelajaran pada pengajaran sistem kesetimbangan, melengkapi bahan ajar dengan media interaktif menggunakan fasilitas teknologi informasi, melakukan standarisasi dan ujicoba bahan ajar hasil pengembangan, dan Implementasi bahan ajar sebagai media pembelajaran meningkatkan hasil belajar mahasiswa pada mata kuliah Kimia Umum II. Hasil penelitian menunujukkan bahwa bahan ajar berbasis kontekstual yang standar, inovatif dan interaktif untuk pengajaran sistem kesetimbangan telah berhasil dikembangkan. Bahan ajar inovatif hasil pengembangan dilengkapi fasilitas pembelajaran berupa kegiatan laboratorium yang terintegrasi di dalam materi ajar sistem kesetimbangan kimia. Bahan ajar juga dilengkapi dengan media pembelajaran dan aktivitas luar kelas yang berhubungan dengan kehidupan sehari-hari. Bahan ajar inovatif hasil pengembangan mampu meningkatkan aktivitas belajar mahasiswa sehingga pembelajaran menjadi lebih menarik, dapat dilakukan dengan mudah, efisien dan meningkatkan kompetensi mahasiswa. Bahan ajar hasil pengembangan mampu memotivasi mahasiswa belajar mandiri dan memberi penekanan pada konsep sistem kesetimbangan kimia yang berhubungan dengan kehidupan sehari-hari. Fasilitas yang tersedia di dalam bahan ajar elektronik mampu meningkatkan kesan pembelajaran lebih lama diingat oleh mahasiswa sehingga dapat meningkatan kompetensi mahasiswa pada pengajaran sistem kesetimbangan kimia. Hasil belajar mahasiswa yang diajar menggunakan bahan ajar inovatif (M=86,9±6,9) lebih tinggi dibandingkan terhadap hasil belajar mahasiswa yang diajar menggunakan buku teks wajib (M=67,5±6,6), dan dua kelompok perlakuan berbeda secara signifikan (thitung 7,115 > ttabel 1,663). Tingkat keefektifan pembelajaran berbasis proyek (102%) lebih tinggi dibaanding dengan pembelajaran konvensional (85%). Bahan ajar inovatif berbasis kontekstual dapat menguatkan cara belajar menjadi lebih menarik, menantang, dan membangun kreativitas dan kemampuan berpikir kritis terhadap hubungan materi kuliah dengan kehidupan nyata. Kata kunci: Pembelajaran kontekstual, inovasi pembelajaran, bahan ajar, kompetensi mahasiswa, kesetimbangan kimia

K74 - Pengaruh Ion Logam Cd (II) terhadap Adsorpsi Ion Logam Pb (II) dengan Adsorben Tanah Napa Mawardi, Hary Sanjaya, Azhar Maliki Jurusan Kimia FMIPA Universitas Negeri Padang, Sumatera Barat, Indonesia, Email:[email protected]

Abstract: Research has been done about influence of the presence of metal ions Cd (II) on the adsorption of metal ions Pb (II) by using adsorbents napa land from areas Aripan, South Solok. Napa soil contains 63.20% of silica and alumina 16:55%, it was lmost same as the content of silica and alumina in zeolite nature so that it can be used as an adsorbent. In this research studied the influence of presence of metal ions Cd (II) metal ions on the absorption of Pb (II) with some parameters, such as the initial concentration of the solution, the addition of metal ions Cd (II), pH and temperature of heating the adsorbent. Then also studied the regeneration of both SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) metals by using a solution of 1% HNO3. These results indicate that the presence of metal ions Cd (II) decrease the absorption of the metal ions Pb (II). The optimum concentration of metal ion uptake of Pb (II) was 150 mg / L, the optimum concentration of the addition of metal ions Cd (II) is ½ times of concentration of metal ions Pb (II). The optimum pH for metal ions Pb (II) was 5 and 6 for the metal ions Cd (II). While the optimum adsorbent heating temperature is 125 ° C, and the percentage of regenerating metal ions Pb (II) was 64 326% and Cd (II) was 38 675%. Keywords: Adsorption, Napa Soil, Pb (II), Cd (II), AAS, regeneration

K75 - STUDI ADSORPSI-DESORPSI ANION FOSFATPADA ZEOLIT TERMODIFIKASI CTAB Maya Sari Ananda Pohan, Sutarno, Suyanta FMIPA, Universitas Gadjah Mada, email: [email protected]

Abstract: The aims of modify natural zeolite Klaten with CTAB (cetiltrimetilammonium bromide) on these research is to make anionic adsorbent for phosphate contaminant. Desorption of phosphate on water and citric acid 0.33 M medium to know the potential of modified zeolite as slow release fertilizer has been studied. The research was started by preparation, activation and modification of natural zeolite. Natural zeolite, activated zeolite and modified zeolite were then charactherized by XRD, FTIR, SEM-EDS and determination of cation exchange capacity. The modified zeolite were then used to adsorption of phosphate. Study of phosphate sorption include influence of pH, contact time, kinetic and adsorption isoterm. After adsorption, anion were desorbed in water and citric acid 0.33 M medium. Concentration of phosphate was determined using spectrometer UV-Vis. The results show that modification of natural zeolite with CTAB caused surface of zeolite covered by CTAB, so it can adsorp the phosphate anion. The maximum adsorption of phosphate was at pH=5, contact time=60 minute. The sorption equilibrium data are in good agreement with the Ho kinetic model (adsorption rate=0.112 g mmol-1minute -1) and the Langmuir isotherm model with adsorption capacity=8.873 x 10-5 mol g-1 and K=28.972 x 105 g mol-1.Amount of phosphate desorption in citric acid 0.33 M medium was higher than in water medium. Based on these results, CTAB modified zeolite that adsorbed phosphate anion have potential to be applied as slow release fertilizer. Keywords: zeolite, modified, phosphate, adsorption, desorption.

K76 - AKTIVITAS ANTIJAMUR EUSIDERIN A (Eusideroxylon zwagery) TERHADAP Rhizoctonia solani DAN Gliocladium fimbriatum Muhaimin1*, Meity Suradji Sinaga2, Harizon1, Syamsurizal1, Afrida 1 1 2

Program Studi Kimia, Fakultas Sains dan Teknologi Universitas Jambi, Mendalo Darat, Jambi, *Email: [email protected]. Departemen Proteksi Tanaman, FAPERTAIPB, Darmaga, Bogor

Abstract: The purpose of this research was to investigate antifungal activity of Eusiderin A from Eusideroxylon zwagery againstRhizoctonia solani and Gliocladium fimbriatum. Antifungal activity of Eusiderin A (3, 4, 5 ppm) was studied against pathogenic plant fungus using PDA (Potato Dextrose Agar) as testing culture media at room temperature, and were monitored for 5 days. The invitro antifungal activity was performed by agar well diffusion method. Eusiderin A, a rare benzodioxane-type neolignan was isolated as major component from E. zwagery which showed potent antifungal activity against Rhizoctonia solani and Gliocladium fimbriatum. Eusiderin A was at a concentration of 5 ppm to give most effective inhibition, 21.95% on the colony growth of Rhizoctonia solani. Whilstit had no inhibitory activity againstthe growth ofGliocladiumfimbriatumcolony. The result was in line with Gliocladiumfimbriatum’s nature as antagonistagent against variouspathogenicplants and it is very well knownasa biological control. It can be concluded that Eusiderin A was a candidate compound for a potent antifungal agent since it could exhibit Rhizoctonia solanicolony growth. Keywords: Eusiderin A, Eusideroxylon zwagery, Rhizoctonia solani, Gliocladium fimbriatum

K77 - UJI POTENSI ANTIKANKER BEBERAPA TUMBUHAN OBAT ASAL KALIMANTAN BARAT Muhamad Agus Wibowo, Nora Idiawati, Dohot Maruli Purba, Syafri Lushaini, Djoko Parwanto, Rio Andie, Puji Ardiningsih, Faskalia FMIPA, Universitas Tanjungpura; email: [email protected]

Abstrak: Kalimantan Barat merupakan salah satu propinsi di Indonesia yang kaya akan tumbuhan obat. Tujuan dari penelitian ini adalah untuk menentukan potensi antikanker ekstrak metanol dari lima daun tanaman asal Kalimantan Barat. Pada penelitian ini dilakukan penentuan aktivitas sitotoksisitas (LC50) dengan metoda BSLT, aktivitas antioksidan (IC50), dan pengukuran total fenol. Hasil penelitian diperoleh data LC50, IC50, dan total fenol dari masing-masing ekstrak secara berturut-turut adalah: Kedadai (224,03 ppm, 76,54 ppm, dan 24,67 µg TAE/mg), Kentutan (578,31 ppm, 117,32 ppm, dan 22,22 µg TAE/mg), Malek (389,60 ppm, 223,54 ppm, dan 121,15 µg TAE/mg), Buas-buas (1266,14 ppm, 227,72 ppm, dan 300,80 µg TAE/mg), dan Soma (363,13

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Kumpulan Abstrak Kelompok Kimia (K) ppm,244,61 ppm, dan 2,13 µg TAE/mg). Dari hasil penelitian dapat disimpulkan bahwa tumbuhan Kedadai, Kentutan, Malek, dan Soma bersifat sititoksik dan potensi sebagai antikanker. Keywords: Kedadai, Kentutan, Malek, Buas-buas, Soma

K78 - Pengaruh Pemberian Ektrak Biji Pepaya(Carica papaya) Terhadap Peningkatan Kematian Cacing Gelang Babi (Ascaris suum, Goeze) In Vitro Muhammad Fikriansyah, Gusti Aulia Nasution, Grace Thresia Nainggolan, Hamidatun Nisa, Muhammad Nizam, Nora Susanti Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, email: [email protected]

Abstract: Garica Papaya,L.(local name: papaya) is a well fruit‟s seeds in Indonesia one of each is have the effect toward the death of Pig Worm (Ascaris suum, Goeze) in vitro. Experimental laboratoric, with post-test only control group design using 4 groups (NaCl 0.9% for negative control, extract of papaya seeds with 5%, 10% of concentration, also pyrantel pamoate as the positive control with Combantrine as the trademark). Observation is done by using purposive sampling method. The worm is incubated in 37oC. Data analyzed done calculate until the worm was died. It shows that the extract of papaya seeds of each concentration has effect of anthelmintic. From the result it can be concluded that the extract of papaya seeds has effect to increase the death of Ascaris suum, Goeze In vitro although the effectivity as a little bit lower than pyrantel pamoate and increase of extract papaya seeds concentration is proportionally with the increase of the death worm. Keywords: Antihelmintik, extract of papaya seeds, pyrantel pamoate, Ascaris suum, Goeze

K79 - PENGARUH PEMBERIAN QUIZ PADA PEMBELAJARAN JIGSAW TYPE 4 TERHADAP HASIL BELAJAR KIMIA SISWA DI SMAN 2 TANJAB TIMUR JAMBI Muhammad Haris Effendi, FatriaDewi, Fuldiaratman, Nurasiah Pendidikan Kimia FKIP Universitas Jambi; email: [email protected]

Abstract: Different types of jigsaw offers students with different learning experiences. The varied treatments can be in the provision of „quizzes‟ during the discussions as has been recommended by jigsaw 4. This writing reports the effect of use of quizzes on students‟ learning outcomes in chemistry subject in SMAN 2 Tanjung Jabung Timur Jambi. A mixed-method design was used in this study. Two classess of grade 10 students in the mentioned school were involved to implement jigsaw 4 and jigsaw 2 respectively. Data was collected using observational sheet, test and interviews. The results of test showed that the students‟ scores in the jigsaw 4 class was better than their counterparts in the jigsaw 2 (mean= 80.35 vs 75.9; t-test sig= 0.029< 0.05). Based on the observation, the students in the jigsaw 4 looked hada better preparedness to face the test compared to their counterparts in the jigsaw 2 due to the quizzes.In the interviews, some students commented differently about their learning experiences due to the different treatments given in the lessons. Based on the results above, it can be concluded that increasing the students‟ preparedness, particularly by implementing quizzes, can develop students‟ learning outcomes in a jigsaw classroom. Keywords: Jigsaw learning, learning outcomes, quizzes, chemistry subject.

K80 - PENGOLAHAN LIMBAH CAIR MINYAK SAWIT MELALUI PROSES GABUNGAN ADSORPSI DAN MEMBRAN FILTRASI Muhammad Said Universitas Sriwijaya

K81 - AKTIVITAS ANTIMIKROBIAL EKSTRAK ETIL ASETAT DAUN GALINGGANG(Casia alata) Murniana1), Binawati Ginting1) Kartini Hasballah2) Leyna Miska1) 1

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala, email: [email protected]. 2Fakultas Kedokteran, Universitas Syiah Kuala, email: [email protected]

Abstract: The antimicrobial activity of ethyl acetate extracts of leaves Galinggang (Cassia alata) was conducted. This research to aim blocked ability of C. alata leave that growed in Aceh toward growth of S. aureus, E. coli bacteria and C. albicans fungus. C. alata leave prepared then separated its compound using Vacuum Liquid Chromatography that produced 6 group fraction, CAE-1 (3,61 gram); CAE-2 (2,02 gram); CAE-3 (0,64 gram); CAE-4 (0,92 gram); CAE-5 (1,44 gram) and CAE-6 (1,02 gram). Antimicrobial activity test of crude extract and fractions toward S. aureus, E. coli bacteria and C. albicans fungus using agar diffusion method with 5%; 10% and 20% concentration. Antimicrobial activity test result showed that an active ethyl acetate crude extract toward S. aureus bacteria on 5%; 10% and 20% concentration with inhibition zone7,5 mm; 8,5 mm and 10 mm respectively. The most active fraction toward S. aureus bacteria is CAE-6 fraction on 20% concentration


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Kumpulan Abstrak Kelompok Kimia (K) produced inhibition zone among 10 mm. Ethyl acetate crude of C. alata leave in active toward E. coli bacteria and C. albicans fungus. Based on phytochemical test result, CAE-6 fraction has secondary metabolite from fenol group that estimated active ininhibitiingS. aureus bacteria. Keywords: Cassia alata, antimicrobial, ethyl acetate extract, Sthaphylococcus aureus, Eschericia coli, Candida albicans

K82 - Kandungan Timbal pada Kijing (Pilsbryoconcha exilis) Sungai Riam Kanan Kalimantan Selatan Noer Komari, Utami Irawati, Sri Hidayati Program Studi Kimia FMIPA Universitas Lambung Mangkurat, Jl. A. Yani Km. 36 Banjarbaru Kalimantan Selatan 70714; e-mail: [email protected]

Abstract: Gravestone (Pilsbryoconcha exilis) is one macrozoobentos in freshwater. The animal was one of bioindicator of heavy metal pollution, because their lives are relatively sedentary, considered filter feeders and bioaccumulative properties of the heavy metals. The research objective was to determine the concentrations of lead on the gravestone (P. exilis) of Riam Kanan River South Kalimantan using Atomic Absorption Spectrophotometer. Sampling was conducted in March and April 2012 in the three-point location, the Tiwingan Village, Mandikapau Villages and Sungai Alang Villages. The results showed that the concentrations of lead at 0.218 to 1.681 mg / kg . Based on the quality standard Food and Drug Administration Center, gravestone in Right Riam River South Kalimantan is suitable for consumption. Keywords: Pilsbryoconcha exilis, bioindicator, heavy metals, timbal

K83 - PERBANDINGAN KEMAMPUAN BERKOMUNIKASI SISWA PADA PEMBELAJARAN JIGSAW 2 DAN 4 DI SMAN 2 TANJAB TIMUR JAMBI Nurasiah, Muhammad Haris Effendi Magister Pendidikan Kimia Program Pasca Sarjana Universitas Jambi, email: [email protected]

Abstract: In a jigsaw learning, student‟s communication skill is critically needed to produce the student‟s learning success. There is a different treatment provided for students between the jigsaw 2 and jigsaw 4. Hence, this study aimed to understand the difference in the student‟s communication skill taught by jigsaw 2 and jigsaw 4 model in a chemistry-nomenclature subject. A mixed method design was used in this study descriptively. Two classess of grade 10 students of SMA Negeri 2 Tanjung Jabung Timur Jambi were involved to implement jigsaw 2 and jigsaw 4 respectively. Data was collected using observational sheet and questionnaires. The results of analysis showed that the communiaction skill of students implementing the jigsaw 4 was much better than those in the jigsaw 2. The difference was due to the quizzes provided for students in the jigsaw 4 that made the students had a better preparedness. They looked more confident to conduct peer tutorial activity that their counterpart. Based on the results above, it can be concluded that increasing the students‟ preparedness particularly by implementing quizzes can develop the quality of peer tutorial activity between students that in turn will affect their learning outcomes. Keywords: Jigsaw learning, peer tutorial, communication skill, chemistry subject.

K84 - FLAVONOID DARI DAUN CRYPTOCARYA TOMENTOSA (LAURACEAE) DAN SIFAT SITOTOKSIKNYA Nurul Fadhilah1, Yana Maolana Syah2, dan Lia Dewi Juliawaty2 1

Fakultas Sains dan Teknologi, Universitas Jambi, [email protected]. 2Kelompok Keilmuan Kimia Organik, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung, Jalan Ganesha no. 10 Bandung 40132, [email protected]

Abstrak: Tumbuhan genus Cryptocarya (Lauraceae) tersebar di hutan tropis dan subtropis dunia. Genus ini tumbuh hampir di seluruh kepulauan Indonesia dan dikenal dengan nama daerah “Medang”. Tumbuhan ini memiliki nilai ekonomis karena kayu batangnya dapat dimanfaatkan untuk bahan bangunan, perabot, dan pulp pada industri kertas. Selain itu, Cryptocaryajuga telah digunakan sebagai obat tradisional, di antaranya untuk menyembuhkan nyeri otot, nyeri sendi, sakit kepala, mual, dan infeksi karena jamur dan bakteri. Studi fitokimia genus Cryptocarya melaporkan bahwa metabolit sekunder utama pada genus ini yaitu alkaloid, piron dan flavonoid yang memiliki bioaktivitas yang beragam, seperti aktivitas sitotoksik terhadap beberapa sel kanker, antimalaria, antibakteri, dan antiinflamasi. Namun, kajian fitokimiadan bioaktivitas pada Cryptocarya Indonesia masih terbatas pada jaringan kulit batang, kayu batang dan akar. Kajian fitokimia pada jaringan daun jarang dilakukan. Salah satu spesies yang tumbuh di Indonesia yaitu Cryptocarya tomentosa. Pada penelitian ini telah dilakukan kajian pada jaringan daunC. tomentosa yang belum pernah dilaporkan sebelumnya. Dua senyawa turunan flavonoid telah berhasil diisolasi dari ekstrak ethyl asetat daun C. tomentosa menggunakan berbagai teknik kromatografi, di antaranya kromatografi cair vakum dan kromatografi kolom gravitasi. Struktur senyawa flavonoid tersebut telah diidentifikasi sebagai kuersetin dan dihidrokuersetin berdasarkan data spektroskopi 1D 26


Kumpulan Abstrak Kelompok Kimia (K) dan 2D NMR. Selain itu, uji sitotoksisitas dari ekstrak etil asetat dan dua senyawa flavonoidtersebut telah dilakukan terhadap sel murin leukemia P-388 dan memperlihatkan bahwa baik ekstrak maupun senyawanya bersifat tidak aktif. Kata kunci: Cryptocarya tomentosa, flavonoid, sitotoksisitas, sel murin leukemia P-388

K85 - PENGARUH ELEKTROLIT H3PO4 TERHADAP SIFAT LISTRIK ELEKTRODA EDLC DARI KARBON TEMPURUNG BIJI KARET Olly Norita Tetra, Emriadi, Admin Alif, dan Gesti Upramita Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas Padang; Email: [email protected]

Abstract: Carbon of rubber seed shell was prepared and used as an electrode material for EDLC in H 3PO4 electrolyte. Effect of H3PO4 as the electrolyte is added to polyvinyl alcohol is done with H 3PO4 concentrations to vary from 0.3 to 1.0 M. It was found that the optimum capacitance value contained at a concentration of 0.9 M H3PO4 in the amount of 69.85 nF and 53.4 nF, the voltage value 0.3 and 0.114 volt and current values of 7.0 and 3.0 µA for rubber seed shell carbon electrodes with particle sizes of 90 and 125 µm. Keywords: Supercapacitors, EDLC, Rubber Seed Shell, Capacitance, Polyvinyl Alcohol

K86 - Developing a Chemistry Modules for Junior High School on The Topics Chemistry for Daily Life Ellizar Universitas Negeri Padang; [email protected]

Abstract: The modules were constructed based on the instructional design suggested by Branch, 2009. The development consisted on five steps ADDIE, Analysis, Design, Development, Implementation and Evaluation. The first step began with identifying the process of the existing Chemistry instructional process, students‟ characteristics and defining the objectives of the instructional program. At the design step, a set of modules were developed based on the national standard curriculum. The content validity was validated by Chemistry Lecturers and Chemistry teachers. The modules were then revised before implementation steps, in term of contents and language based on the suggestions. The effectivity of modules was tested at the implementation step. An experiment at SMPN 14 Padang by using Randomized Control Group Posttest Only Design had been administered to find out the effectivity of the instructional. Based on the data analysis, the findings of this research were that, the use of modules has been significantly improve the students‟ Chemistry learning. Based on the findings, it can concluded that the used of the developed modules can significantly improve the students learning in Chemistry at Junior High School (SMP) students. Keywords: instructional design, development, Chemistry, modules

K87 - Kinerja Panel Surya Cu2O-CuO/Al pada Lampu Neon dan Sinar UV Rahadian Zainul*1, Admin Alif2, Hermansyah Aziz2, Syukri Arief3, Syukri4 1

Laboratorium Kimia Fisika, Universitas Negeri Padang, Sumatera Barat, Indonesia. 2Laboratorium Elektro-Fotokimia, Universitas Andalas, Sumatera Barat, Indonesia. 3Laboratorium Kimia Material, Universitas Andalas, Sumatera Barat, Indonesia. *[email protected]

Abstrak: Riset ini bertujuan untuk melihat kinerja sel surya yang dibuat dari material Cu 2O-CuO/Al pada penyinaran lampu Neon dan sinar UV. Sinar lampu ruang dan sinar UV yang digunakan adalah lampu neon 10 watt dan lampu UV 10 watt dengan variasi jumlah 1, 2 dan 3. Desain yang dipakai merupakan desain panel datar dengan luas permukaan panel 4 cm x 10 cm dan luas elektroda yang digunakan adalah 0.003711 m 2. Dari hasil pengujian, panel surya memberikan kinerja maksimum sebesar 129.038 mWatt/m2 untuk lampu neon (n=3) pada intensitas 184.75 footcandle (ftc) dan 27,89 mWatt/m 2 untuk lampu UV (n=3) pada intensitas 15.515 ftc. Kata kunci: Panel Surya, Neon,UV, Cu2O-CuO/Al

K88 - Adsorpsi Fe(III) menggunakan sistem adsorpsi kolom dengan bahan isian kristobalit berlapiskan khitosan berikatan silang Rahmi, Fathurrahmi, Yuni Malasari Jurusan Kimia FMIPA, Universitas Syiah Kuala, Banda Aceh. email: [email protected]

Abstract: Heavy metal contamination in the soil and water is one of the major environmental problems. Thus, innovative processes for treating wastewater containing heavy metals are needed to solve the problem. One of innovative physic-chemical removal processes is adsorption on new adsorbents. In this study, the removal of Fe(III) from aqueous solutions using a biodegradable material, known as crosslinked chitosan-coated cristobalite. Chitosan was crosslinked with glutaraldehyde and coated on the surface of cristobalite through a dip and phase SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) inversion process. Crosslinked chitosan-coated cristobalite was examined for Fe(III) removal in a series of column adsorption experiments. A maximum adsorption amount was observed at a glutaraldehyde concentration in sorbent preparation of 3% (w/w). Adsorption of Fe(III) onto the crosslinked chitosan-coated cristobalite was found to be strongly pH dependent. Significant amounts of Fe(III) ions were adsorbed under at a pH of 4.0 (90.50%). These preliminary results indicate crosslinked chitosan-coated cristobalite has a great potential for Fe(III) removal. Keywords: Chitosan, Cristobalite, Glutaraldehyde, Adsorption, Fe(III)

K89 - Pengembangan Lembar Kerja Siswa (LKS) inovatif Kimia Redoks Berbasis Problem Based Learning (PBL) untuk siswa SMA Ramlan Silaban; Marianna Pasaribu; Irving Josafat Alexander Dosen Jurusan Kimia FMIPA Universitas Negeri Medan; Email : [email protected]

Abstrak: Tujuan dari penelitian ini adalah untuk memperoleh Lembar Kerja Siswa (LKS) inovatif materi Kimia Redoks untuk siswa SMA serta pengaruhnya terhadap hasil belajar kimia. Penelitian dilaksanakan di kelas X SMA melibatkan siswa, guru bidang studi kimia dan dosen kimia sebagai validator. Penelitian pengembangan ini dilakukan menurut model Borg & Gall, menggunakan dua jenis instrumen yaitu instrument test dan nontest. Data yang terkait dengan proses pembuatan LKS dianalisis secara statistik deskriptif sedangkan data hasil belajar kimia secara statistik inferensial. Adapun hasil penelitian adalah : (1). Buku LKS Kimia Redoks SMA yang diterbitkan oleh beberapa penerbit, sudah bagus namun masih perlu diadaptasikan ke dalamnya model pembelajaran supaya siswa semakin tertarik belajar. (2). LKS Kimia Redoks berbasis PBL yang disusun sudah memenuhi kelayakan sebagai bahan ajar menurut standar yang ditetapkan BSNP. (3). Hasil belajar kimia siswa SMA yang dibelajarkan menggunakan LKS Kimia Redoks berbasis PBL yang dikembangkan lebih tinggi dari yang dibelajarkan menggunakan LKS sebelumnya. (4). Aspek afektif siswa yang dibelajarkan menggunakan LKS Kimia Redoks berbasis PBL lebih tinggi dari yang dibelajarkan menggunakan LKS sebelumnya (5). Aspek psikomotorik siswa yang dibelajarkan menggunakan LKS Kimia Redoks berbasis PBL lebih tinggi dibandingkan dengan yang dibelajarkan menggunakan LKS yang sudah ada.

K90 -

AN INSPIRING INSTRUCTIONAL SCENARIO FOR BUILDING CHARACTER OF THE 8THGRADE STUDENTS THROUGH CHEMISTRY Rayandra Asyhar1, Sufri2, Fuldiaratman2, Dhilla K. Ikbar2, Hastuti Wibowo3 tudy Program of Doctor in Mathematics and Science Education, Jambi University. Department of Mathematics and Sciences Education, Jambi University. Junior High School Xaverius 1 Jambi City; Contact Person: [email protected]

Abstract: Character educationisan important issueandbecameatrending topicinIndonesiain thelast three years. Itis in linewith theimplementation ofthe newschool curriculum 2013. As a consequence, teachers need to integratecharacter valuesintosubject matter content in classroom activities. The problemis thatmanyteachers are not ableto do the integrationin real teaching. This researchaims to develop an instructionalscenariothat describesthe integrationofthe character valuesinto chemistry as an inspirationfor middle school teachers. A research and development method was used this study by adopting ASSURE model. While the questionnaire, interview and observation techniques were used for the data collection. The created scenario was judged by the experts and selected science teachers of few middle schools in Jambi City prior to application. According to the assessment of the validators, the scenario was very innovative product, met the standards of curriculum, and can be used as a model for inspiring teachers in building character their students. It is recommended to usethe product of scenario in the teaching character values to 8th-grade students through science. Keywords: Character building, chemistry, global era, 8th-grade, instructional scenario.

K91 - ACTIVATION AND CHARACTERIZATION OF JAMBI’S CLAY AS ADSORBENT Restina Bemis, Martina Asti Rahayu Sains dan Teknologi, Universitas Jambi, email: [email protected]

Abstract: Clay is a porous material that widely used as adsorbent material. Clay used from Jambi . Clay activation has been done by using H2SO4 and HNO3 activator. Clay characterized using XRF , SEM , and X-ray Diffraction. XRF results indicate that most of the clay constituent Jambi their SiO 2 . SEM results show differences in surface morphology of clay because of the influence of the activator used . While the XRD results indicate clay type of quartz . This shows the clay can be used as an adsorbent . Keywords: clay, adsorben, quartz

K92 - POTENSI MINERAL BATUAN TAMBANG BUKIT 12 DENGAN METODE XRD, XRF DAN AAS Rindang Kembar Sari 28


Kumpulan Abstrak Kelompok Kimia (K) Fakultas Tarbiyah dan Ilmu Keguruan, IAIN Bukittinggi; Email : [email protected]

Abstract: The mining area of Bukit 12 Mandailing Natal (Madina) was used as a gold mining public. Based on the physical properties of the rock could be estimated the potential of other minerals contents. Therefore, research is to identify the other material in rock. The methods of identify process are X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Atomic Absorption Spectrophotometer (AAS). The result of measurement by XRF method shows that mineral elements in rocks mining composed by 62.176% Si, 21.997% Al, 6.81% C, 4.193% Fe, 2.884% Cu, while the oxide are 66.66% SiO2, 25.240% Al2O3, 3.292% K2O, Fe2O3 2.201% and 1.257% CuO. The result of measurement by using XRD method describe that rock mining produces the highest peak to indicate SiO2 about 75%, Gold (Au) 21% and copper (Cu) 4%. Furthermore, AAS method shows the mineral elements / compounds contained in the rock are 1.77% Fe, 1.16% Cu, 90.43% SiO2% and 2:05.% Al 2O3.The results of three methods identify that rock mining in Bukit 12 contain dominant minerals namely silicon oxide (SiO2), Cu, Fe and Al (Al2O3). Keywords: Batuan tambang, X-ray Flouresence (XRF), X-ray Diffraction (XRD), Atomic Absorption Spectrofotometer (AAS).

K93 - PENENTUAN ASAM ORGANIK ( ASAM ASETAT, ASAM BENZOAT) TANAH GAMBUT YANG DIBERI FLY ASH DENGAN GAS CHROMATOGRAPHY - MASS SPECTROSCOPY (GCMS) Rini 1, Johni Azmi 1, Hazli Nurdin2 , Hamzar Suyani3, Teguh B. Prasetyo4 1

Laboratorium Pendidikan Kimia, MIPA FKIP Universitas Riau, Pekanbaru. 2 Laboratorium Elektrokimia, Jurusan Kimia, FMIPA, Universitas Andalas, Padang. 3 Laboratorium Organik, Jurusan Kimia, FMIPA, Universitas Andalas, Padang. 4 Laboratorium Ilmu tanah, Jurusan Ilmu Tanah, Faperta, Universitas Andalas, padang; E-mail : [email protected]

Abstrak: Asam asetat dan asam benzoat merupakan produk asam organik bersifat racun dalam tanah gambut yang dihasilkan dari dekomposisi bahan organik dibawah kondisi anaerob. Pemberian fly ash pada tanah gambut dapat mengurangi asam organik (asam asetat, asam benzoat). Identifikasi asam asetat dan asam benzoat dengan GC menunjukkan keberadaan asam asetat dengan waktu retensi (tR) 11,8 menit dengan data m/znya 60;43;15 dan asam benzoat dengan tR 15,8 menit dengan data m/z nya 122;105;77;51 menggunakan gas Helium sebagai fase gerak, tekanan 70 Kpa, silika gel sebagai fase diam dengan pori 0,25 µm dalam kolom kapiler 30 m x0,25 mm ID. Temperatur injeksi diprogram 250 0C- 270 0C. Energy 70 ev. Kecepatan alir di dalam kolom 20 mL/menit. GC dihubungkan secara otomatis ke MS yang dilengkapi dengan komputer. Pemberian 2 g fly ash untuk 100 g tanah gambut dapat mengurangi kandungan asam asetat dari 1470 ppm menjadi 708 ppm dan asam benzoate dari 189 ppm menjadi 119 ppm. Kata kunci: Asam asetat, asam benzoat, gambut, fly ash, GC, MS.

K94 - STUDI PERANAN GUGUS KARBOKSILAT PADA BIOSORPSI ION Cr(VI) OLEH BIOMASSA Cladophora fracta Riski Dwimalida Putri1* Putri, Mawardi2, dan Bahrizal2 1

Program Studi Kimia Fakultas Sains dan Teknologi Universitas Jambi. 2Program Studi Kimia FMIPA Universitas Negeri Padang. email: [email protected]

Abstrak: Salah satu alternatif penghilangan kontaminasi logam berat diperairan adalah melalui proses biosorpsi. Mekanisme utama yang berlangsung dalam proses biosopsi meliputi interaksi ionik dan pembentukan komplek antara ion logam dan ligan yang terdapat dalam struktur biomaterial. Gugus fungsi yang potensial berperan sebagai ligan dalam proses biosorpsi sangat bergantung pada organisme. Pada kelompok alga mat gugus fungsi yang potensial diantaranya karboksilat, amina, imidazol dan sulfuhidril. Pada penelitian ini dilakukan studi peranan gugus karboksilat pada biosorpsi ion Cr(VI) oleh biomassa Cladophora fracta. Untuk mengetahui peranan gugus karboksilat, gugus fungsi tersebut dimodifikasi menjadi ester melalui reaksi esterifikasi dengan metanol dan asam klorida. Karakterisasi menggunakan FTIR menunjukkan bahwa setelah dimodifikasi terjadi penurunan intensitas gugus –OH dan meningkatnya intensitas serapan pada gugus-gugus yang menunjukkan keberadaan gugus fungsi ester. Biosorpsi ion Cr(VI) dilakukan pada pH 2 yang merupakan pH optimum penyerapan. Diperoleh penurunan kapasitas penyerapan dari 5,35 mg/g menjadi 4,36 mg/g. Sehingga dapat disimpulkan bahwa gugus karboksilat memiliki peran yang signifikan pada biosorpsi ion Cr(VI) oleh Cladophora fracta Kata kunci: Biosorpsi, gugus karboksilat, Cr(VI)

K95 - DEVELOPMENT STUDENT WORKSHEET BASED MATACOGNITIVE TO IMPROVE THE ABILITY OFCRITICAL THINKING Roberto Putra kusuma Hutagaol Megister Pendidikan Kimia, Universitas Jambi; Email : [email protected]


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Kumpulan Abstrak Kelompok Kimia (K) Abstract: Constraints experienced by students in learning is the difficulty in studying the materials that are chemical calculations. the data is gotten from five respondents who have the differ ent teaching experience the data is used through interviewing and then analized my using qualitative metode of miles and hubermen.Based on data analisys, so it is goteen that almost all respondent‟s are agreed that this so important to use the learning set in the class. They said that the learning set will create an eficien and effective learning proses, There were some respondents who create their own learning device, but there are some respondents taking the learning set from website. Based on this research aims to develop students' worksheets based metacognitive viable approach theoretically and empirically to improve student learning outcomes.This study was included in the research development, namely the development of student worksheets based metacognitive approach developed by Adie. In this development study authors also intends to develop critical thinking skills, which is one in metacognitive skills . Keywords: Worksheets students , Metacognitive , critical thinking

K96 - Direct conversion of sucrose into -valerolactone over Ni-Sn alloy catalysts Rodiansono,1* Maria Dewi Astuti,1 Uripto Trisno Santoso,1Dwi Rasy Mujiyanti,1Shogo Shimazu2 1

Dept. Chemistry, Faculty of Mathematics and Natural Sciences, Lambung Mangkurat University, Jl. A. Yani Km 36.0 Banjarbaru South Kalimantan, Indonesia. 2Graduate School of Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 2638522, Japan. *Corresponding author:[email protected]

Abstract: Catalytic conversion of sucrose by means of nickel-tin alloy catalyst supported on aluminium hydroxide (Ni-Sn/AlOH) in aqueous solution under hydrogen gas atmosphere at 383-453 K produced levulinic acid, valerolactone and hexitols (sorbitol and mannitol). Ni-Sn/AlOH catalysts were easily obtained by a simple synthetic procedure according to our previous report [1]. Raney nickel supported on aluminium hydroxide (RNi/AlOH) was obtained from the alkali leaching of Raney Ni-Al alloy using a dilute sodium hydroxide solution [2]. The mixture of R-Ni/AlOH and a solution containing tin species was treated hydrothermally in the sealed-teflon autoclave reactor at 423 Kfor 2 h. R-Ni/AlOH catalyst gave only hydrogenated products such as mannitol and sorbitol at 433 K, 2.0 MPa of H2 for 12-24 h. In contrast, Ni-Sn/AlOH catalyst gave levulinic acid product then continuously converted into -valerolactone as main product instead of the hexitols at the same reaction conditions. The addition of tin and the formation of Ni-Sn alloy are believed to play important role on the product distribution. Keywords: Ni-Sn alloy, sucrose, levulinic acid,-valerolactone, hexitols

K97 - Nanodot Catalyst S/TiO2 : Photocatalytic degradation of Metanil Yellow azo dye Rudy Situmeang Department of Chemistry, Lampung University,Jl. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia. Email address : [email protected]

Abstract: The photocatalytic degradation of Metanil Yellow azo dye was carried out in aqueous solution using S/TiO2 as photocatalyst under UV irradiation. The nanoparticles of S/TiO 2 were prepared with S/Ti molar ratio of 1 : 7 by a sol – gel and sonocation method simultaneously and were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Scanning electron Microscope (SEM), and Transmission electron Microscope (TEM). The XRD result show the existence of anatase crystalline phase and cell parameters are a = b = 3,785 Å and c = 9,506 Å using Rietveld Calculation . The particle size is 8 nm determined by TEM analysis. The FTIR result revealed that the catalyst has a Lewis acid site at 1624.31 cm-1,and the activity of the nanocatalyst on Metanil Yellow degradation was excellent using UV-light irradiation, 96.5%. Keywords: sulphur-titania; photocatalysis; dye, BrØnsted – Lowry and Lewis acid sites

K98 - CHARACTERIZATIONOF BACILLUS SUBTILIS’S PECTINASE AND IT’S APPLICATION FOR PAPER BLEACHING PROCESS Sasangka Prasetyawan, Diah Mardiana, Anna Roosdiana, Mardiana Prasetyani Putri Department of Chemistry, Faculty of Sciences University of Brawijaya

Abstract: The goal of this research were to characterize Bacillus firmus’ pectinase; optimum condition of pectinase activity, enzymatic kinetic parameter and the effect of metalions Zn2+,Cu2+,Fe3+and it‟s application for paper bleaching process. The optimum condition was determine dby calculate pectinase activity in variation of pH5-9, temperature of 30-50OC and reaction time of40-60 minutes, based on dependent variable reducing sugar content, galaturonic acid, and analysis byspectrophotometry using DN Sreagent. The kinetic parameter was investigated using substrate concentration of (0.1;0.2;0.3;0.4;0,5)%(w/v), whereas the metalions concentration were 2, 4, 6, 8, 10 mM. Pulp Kappa Numberin p a p e r bleaching process analysis byspectro photo metry method. The result showed that the optimum condition were pH7, temperature of 35OC and incubation time of 50 minutes. Vm and KM number were 161.29 µ mol/mL minutes and 0.55%(w/v), respectively. While the 30


Kumpulan Abstrak Kelompok Kimia (K) presence of ions Zn2+,Cu2+,Fe3+were producing Vmapp(147.06;156.25;153.85)µ g.ml-1min-1, K Mapp of(0.56;0.63;0.65)%, and also KI of 333.33;41.38;32.97. Pectinase activity in the paper bleaching process at 6 hours was 52.12 Unit with Kappa Number of 54.4mL/g, whereas using 1 grams of pulp was 52.33 Unit with Kappa Number of 49 mL/g. Keywords: pectinase, Bacillus subtilis, paper bleaching, process

K99 - PENGEMBANGAN LEMBAR KERJA MAHASISWA (LKM) BERBASIS INQUIRI PADA MATA KULIAH STRATEGI PEMBELAJARAN KIMIA Sri Haryati dan Erviyenni Program Studi Pendidikan Kimia FKIP Universitas Riau, [email protected]

Abstrak: Penelitian pengembangan telah dilaksanakan bertujuan untuk menghasilkan lembar kerja mahasiswa (LKM) berbasis inquiri yang valid, praktis dan efektif pada mata kuliah strategi pembelajaran kimia. Metode penelitian yang digunakan adalah penelitian pengembangan (development research). Penelitian yang dilaksanakan terdiri dari empat tahap, yaitu tahap pendefinisian (define), perancangan (design), pengembangan (develop), pendesiminasian (desseminate).Penelitian pada tahun ini baru sampai pada tahap pengembangan. Data penelitian dikumpulkan melalui lembar penilaian yang diisi oleh 2 validator. Validasi internal terhadap LKM menggambarkan bahwa penulisan LKM sudah memenuhi indikator penilaian teknis, penilaian isi dan penilaian format. Hasil penilaian rata-rata dari validator adalah 3,50 dengan kategori baik. LKM berbasis inquiri yang telah dihasilkan memilki judul, tujuan, teori singkat, langkah kerja, ada pertanyaan dan sudah mencantumkan daftar pustaka, disediakan tabel untuk menulis hasil jawaban tugas. Bahasa yang digunakan sesuai dengan tingkat intelektual mahasiswa. Kata kunci: lembar kerja, inquiri; strategi , pembelajaran

K100 - PENGGUNAAN SONIKASI DALAM SINTESIS METIL NITROSALISILAT DARI KOMPONEN UTAMA MINYAK GANDAPURA Suratmo, Elvina D.I., Elina Dewi, Sella F.P. Jurusan Kimia FMIPA UB, Email : [email protected] atau [email protected]

Abstrak: Metil salisilat atau metil 2-hidroksibenzoat merupakan komponen utama minyak gandapura. Senyawa metil salisilat dapat diubah menjadi senyawa turunannya melalui transformasi gugus fungsi. Salah satu turunan metil salisilat adalah metil nitrosalisilat, yang dapat diperoleh melalui reaksi nitrasi metil salisilat. Reaksi nitrasi merupakan reaksi substitusi elektrofilik pada cincin benzena dari metil salisilat. Reaksi nitrasi dilakukan dengan mereaksikan asam nitrat pekat dan asam sulfat pekat dengan metil salisilat dengan menggunakan sonikasi selama 60 menit, dan tanpa menggunakan sonikasi selama 3 jam. Hasil yang diperoleh dianalisis sifat fisiknya dan dikarakterisasi menggunakan spektrofotometer IR, dan GC-MS. Berdasarkan analisis sifat fisik hasil reaksi nitrasi dengan waktu sonikasi 60 menit diperoleh produk berupa padatan warna kuning dengan titik lebur 126,9oC dengan rendemen sebesar 35,78% dan yang tidak menggunakan sonikasi dengan waktu reaksi selama 3 jam, diperoleh hasil padatan berwarna kuning dengan titik lebur 127,8 oC dengan rendemen sebesar 27,55%. Karakterisasi produk menggunakan spektrofotometer IR, dan GC-MS diperoleh senyawa metil 5-nitrosalisilat. Kata kunci: Minyak gandapura, metil salisilat, reaksi nitrasi, sonikasi.

K101 - ISOLATION AND CHARACTERIZATION OF COUMARIN COMPOUND FROM SUBANGSUBANG PLANTS (Spilanthes paniculata Wall. Ex. DC) Suryati, Mai Efdi and Suci Hepy Astuti Chemistry Departement, Faculty of Science, Andalas University Padang, Email: [email protected]

Abstract: Isolation and purification coumarin of etil acetate exstract of subang-subang plants (Spilanthes paniculata Wall. Ex. DC) has been done by column chromatography and preparative thin layer chomatography method.Isolated compounds was obtained in the form of white solid. The structure characterization was effected by using spectroscopic data such as UV-Vis and FT-IR. The isolated compound indicated a structure of scopoletin. Keywords: Subang-Subang, Spilanthes paniculata Wall. Ex DC, Scopoletin, coumarin

K102 - BENZOFENON GLUKOSIDA DARI EKSTRAK ETIL ASETAT BUAH MAHKOTA DEWA (Phaleria macrocarpa(Scheff.) Boerl.) Susilawati1*), Sabirin Matsjeh2, Harno Dwi Pranowo2 and Chairil Anwar2 1

*Prodi Pendidikan Kimia FKIP Universitas Riau Pekanbaru, 2 Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Sekip Utara, Yogyakarta. e-mail : [email protected]


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Kumpulan Abstrak Kelompok Kimia (K) Abstrak: Mahkota dewa (Phaleria macrocarpa (Scheff.) Boerl.) yang termasuk kedalam famili Thymelaeaceae merupakan salah satu obat tradisional Indonesia. Konstituen kimia telah diisolasi dari ekstrak etil asetat buah mahkota dewa. Sampel diekstrak dengan metanol, dipekatkan kemudian diekstrak dengan n-heksana, khloroform dan etil asetat. Senyawa dipisahkan dan dimurnikan dengan kromatografi kolom. Senyawa diisolasi dari ekstrak etil asetat sebagai amorf bulat kecil kuning sebanyak 70 mg dengan Tl 281-289oC. Analisis TLC menunjukkan noda berfluoresensi gelap di bawah UV366. Karakterisasi noda TLC menghasilkan Rf 0,16 dengan eluen n-heksana : etil asetat (3 : 7), Rf 0,6 dengan eluen etil asetat dan Rf 0,8 dengan eluen etil asetat : metanol (8:2). Senyawa ini larut dalam aseton dan DMSO. Senyawa ini positif dengan FeCl 3 yang menunjukkan senyawa fenolat. Senyawa diidentifikasi dengan spektroskopi UV, IR, 1H NMR,13C NMR dan NMR 2 dimensi (HMQC, COSY, HMBC) sebagai 6,4‟-dihidroksi-4-metoksibenzofenon-2-O-β-D-glukopiranosida dengan rumus molekul C20H22O10. Senyawa ini adalah sama dengan senyawa yang telah diperoleh sebelumnya dari ekstrak etil asetat kulit batang mahkota dewa. Kata kunci: Mahkota dewa, Phaleria macrocarpa, benzofenon glukosida, 6,4‟-dihidroksi-4-metoksibenzofenon2-O-β-D-glukopiranosida

K103 - Kajian Potensi Tiga Senyawa Trifeniltimah(IV) hidroksibenzoat sebagai Inhibitor Korosi pada Baja Lunak pada Media NaCl Hapin Afriyani, Sutopo Hadi*, dan Hardoko Insan Qudus Jurusan Kimia, FMIPA, Universitas Lampung, Bandar Lampung, Indonesia, *e-mail: [email protected]

Abstrak: Senyawa organotimah(IV) karboksilat dan semua turunannya memiliki aktivitas biologi sangat kuat dan dikenal memiliki aktivitas penghambatan yang tinggi bahkan pada konsentrasi yang sangat rendah sehingga golongan senyawa ini sangat menarik untuk terus dipelajari. Melanjutkan keberhasilan dalam sintesis dan berbagai uji terhadap senyawa organotimah(IV) karboksilat pada beberapa penelitian sebelumnya, dalam makalah ini kami laporkan kajian penghambatan korosi tiga senyawa trifeniltimah(IV) dengan menggunakan ligan asam 2-, 3- dan 4-hidroksibenzoat. Ketiga senyawa hasil sintesis dikarakterisasi dengan beberapa teknik spektroskopi dan juga berdasarkan data mikroanalisis unsur dan data fisika. Uji penghambatan korosi diukur dengan menggunakan Potensiostat Terintegrasi eDAQ tipe ER644 pada baja lunak jenis hot roller plate (HRP)dalam larutan NaCl. Hasil penelitian menunjukkan bahwa ketiga senyawa yang diuji memiliki kemampuan menghambat korosi dengan persen efisien penghambatan untuk turunan trifeniltimah(IV) 2-hidroksibenzoat, 3hidroksibenzoat dan 4-hidroksibenzoat berturut-turut 75,6; 77,9 dan 80,4%. Hasil ini mengindikasikan bahwa ketiga senyawa memiliki kemampuan yang sangat baik sebagai penghambat korosi yang baik. Kata kunci: antikorosi, baja lunak,, % efisiensi penghambat, trifeniltimah(IV) hidroksibenzoat

K104 - PENGARUH PENAMBAHAN Ca2+dan Zn DARI Trichoderma viride

2+

TERHADAPAKTIVITAS XILANASEHASILISOLASI

Sutrisno, Anna Roosdiana, Isdiana Arofah, Janatun Na’imah Jurusan Kimia FMIPA Universitas Brawijaya Malang, Email: [email protected] / 085649661044

Abstrak: Xilanase adalah enzim yang mengkatalisis reaksi hidrolisis xilan menjadi xilosa. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan Ca2+ dan Zn2+ terhadap aktivitas xilanase dan parameter kinetikanya. Pengaruh Ca2+ terhadap aktivitas xilanase ditentukan dengan mengukur aktivitas xilanase pada variasi penambahan Ca2+ 0,2 – 1,5 mM sedangkan pengaruh Zn2+ ditentukan dengan mengukur aktivitas xilanase pada penambahan Zn2+ 25 – 50 mM. Paremeter kinetika ditentukan dengan mengukur aktivitas xilanase pada variasi konsentrasi xilan 0,2 – 1% (b/v) dan 0,5 – 2,5% (b/v). Aktivitas xilanase ditentukan dengan mengukur kadar xilosa yang dihasilkan selama reaksi enzimatis secara spektrofotometri dengan reagen DNS. Hasil penelitian menunjukkan pada penambahan Ca2+ 0,2 – 0,6 mM terjadi peningkatan aktivitas xilanase sedangkan pada penambahan Ca2+ diatas 0,6 mM terjadi penurunan aktivitas. Pada penambahan Zn2+ 25 – 40 mM terjadi peningkatan aktivitas sedangkan pada penambahan Zn2+ diatas 40 mM terjadi penurunan. Parameter kinetika xilanase pada penambahan Ca2+ diperoleh Vm sebesar 45,45 µg mL-1.menit-1 dan KM sebesar 3,09% (b/v) dengan nilai Vm xilanase tanpa penambahan Ca2+ sebesar 71,43µg.mL-1.menit-1 dan KM sebesar 2,93% (b/v), sedangkan -1 -1 pada penambahan Zn2+ diperoleh Vm sebesar 6,80µg.mL m .menit dan KM sebesar 2,87% (b/v), dengan nilai 2+ -1 -1 Vm xilanase tanpa penambahan Zn sebesar 5,32 µg. mL . menit dan KM sebesar 8,05% (b/v). Kata kunci: Gula pereduksi, inhibitor, aktivator, hemiselulosa

K105 - KARAKTERISTIK MINYAK DARI SAMPAH PLASTIK POLIPROPILEN DAN PEMANFAATANNYA SEBAGAI BAHAN BAKAR ALTERNATIF Sutrisno, Heriyanti, Restina Bemis Program Studi Analis Kimia Diploma 3, Fakultas Sains dan Teknologi, Universitas Jambi, email: [email protected]

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Kumpulan Abstrak Kelompok Kimia (K) Abstract: Plastic waste problem has been a big problem, especially in the big cities, including Jambi. The buildup of plastic waste has been no longer a solution due to the limited of land for landfill. Moreover, plastic waste is difficult to degrade by microorganisms. From these facts, it is needed a better method for processing plastic waste. Utilization of plastic waste as a source of fuel is one method that can be used to reduce the problems caused by plastic waste. The aim of this study was to make reactor for conversion of plastic waste (polypropylene type), into oil, production of oil by pirolysis method, and improving the quality of oil by adsorption using a mixture of bentonite and activated carbon with a composition ratio of 85%: 15%. The pirolysis results of 5 kg colorless polypropilene is 310 mL. The characterized of bentonite using XRD shows that the compuund is calcite (CaCO3). The result of oil analysis shows that the carbon chain is in the range of C8-C12 and caloric value 45,032 MJ/kg. The caloric value increased 4.28% after it adsorb using the mix of bentonite and activated carbon, while the sulfur reduced 0.2%. Keywords: polypropylene, pyrolisis, bentonite, activated carbon, adsorption

K106 - ISOLASI SENYAWA METABOLIT SEKUNDER DARI FRAKSI NON POLARKULIT BATANG TUMBUHAN KENANGKAN (Artocarpus rigida) Tati Suhartati*, Neneng Suryani*, Jhons Fatriyadi Suwandi** *Jurusan Kimia FMIPA, Universitas Lampung, ** Fakultas Kedokteran, Universitas Lampung, Email: [email protected]

Abstrak: Telah dilakukan isolasi senyawa metabolit sekunder dari fraksi non polar kulit batang tumbuhan kenangkan (Artocarpus rigida)yang diperoleh dari Desa Keputran Sukoharjo Kabupaten Pringsewu Provinsi Lampung. Tahapan isolasi dimulai dari pengumpulan dan persiapan sampel kemudian ekstraksi, isolasi, dan pemurnian senyawa menggunakan beberapa metode kromatografi. Penentuan struktur senyawa dilakukan secara spektroskopi IR, NMR, dan massa(MS). Senyawa hasil isolasi memiliki sifat fisik berupa kristal putih berbentuk jarum dengan titik leleh 187 oC-188 oC, dan identifikasi menggunakan pereaksi Liebermann Burchard, senyawa hasil isolasi memberikan reaksi positif. Berdasarkan spektroskopi IR, NMR, dan massa (MS), dan perbandingan dengan literatur, senyawa hasil isolasi diperkirakanα-amiriltetrakosanoat. Kata kunci: α-amiriltetrakosanoat, Artocarpusrigida, isolasi

K107 - PENINGKATAN KEMAMPUAN ANTI-OKSIDAN OLEH PROSES TRANSGLIKOSILASI ENZIMATIS EKSTRAK KULIT MANGGIS Titania Tjandrawati Nugroho, Hilwan Yuda Teruna, Riryn Novianti, Yuana Nurulita, Miranti, Diah Amalia Indratni FMIPA,Universitas Riau, email: [email protected]

Abstract: Transglycosylation of .flavonoids and polyphenols can enhance their solubility in polar solvents and increase their biological activity. Enzymatic transglycosylation can be catalyzed by cellulases that have the retaining mechanism. Ethanol extracts of mangosteen (Garcinia mangostana) pericarp has antioxidant properties, and hence can protect cells against oxidative stress. The objective of this study is to: a) evaluate the enzymatic transglycosylation process of ethanol extracts of mangosteen pericarp by cellulase extracts produced by a Riau isolate of Trichoderma;and b) evaluate the transglycosylation products to protect cells against oxidative stress. Ground and dried mangosteen pericarp was extracted with various concentrations of ethanol, with or without cellulase. The transglycosylation process was followed by HPLC analysis, and the products evaluated in vivo and in vitro for ability to protect cells against oxidative stress. In vitro analysis was through the free radical scavenging DPPH method. In vivo analysis is by the MTT method to evaluate cell death due to oxidative stress. Enzymatic transglycosylation of mangosteen ethanol extracts could be detected in 30-50% ethanol in pH 5,5 buffers, and an increase in antioxidant activity was observed. Keywords: Garcinia mangostana, Trichoderma, cellulase

K108 - FORMULATED ANTACID SUSPENSION USED SUSPENDING AGENT METHOCEL E 15 DAN VEEGUM HV Uce Lestari1*, Vinny Hosiana2, Fifi Harmely3 1*

Program Studi Farmasi Fakultas Sains dan Teknologi Universitas Jambi, Jambi, [email protected], Kampus Pinang Masak, Fakultas Farmasi, Universitas Andalas Padang2. Jurusan Farmasi STIFI Yayasan Perintis Padang3

Abstract: It has been formulated antacid suspension used suspending agent Methocel E 15dan Veegum HV wtih combination. Evaluation of the suspension included investigation of organoleptick, degree of sedimentation, pH, particle size, viscosity with rheological property, density and neutralizing capacity acid It was found that formula V with suspending agent combination Methocel E 15 dan Veegum HV that each concentration 1 % given well evaluation and all of formulation not influence neutralizing capacity acid. SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) Keywords: Antacid Suspension, Methocel E 15,Veegum HV, Neutralizing capacity acid

K109 - Aktivitas antioksidan dan antimikroba minyak jeruk purut (Citrus hystrix DC.) dan komponen utamanya Warsito (1), Noorhamdani (2), Sukardi (3), Suratmo (1) 1

Jurusan Kimia,Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya. 2LaboratoriumMikrobiologi, Fakultas Kedokteran, Universitas Brawijaya. 3Program Studi Teknologi Agroindustri, Fakultas Teknologi Pertanian, Universitas Brawijaya

Abstrak: Minyak jeruk purut (C. hystrix) tersusun atas campuran kompleks terpenoid terpenoidyang mengandung oksigen yang didistribusi dalam setiap bagian tanaman.

hidrokarbon dan

Dalam penelitian dilakukan uji aktivitas antioksidan dan antimikroba, baik terhadap minyak jeruk purut dari ranting, daun dan kulit buah termasuk komponen utama sitronelal dan sitronelol. Aktivitas antioksidan dievaluasi berdasarkan uji kemampuannya dalam menangkap radikal DPPH. Aktivitas antimikroba diukur dari kemampuannya menghambat pertumbuhan bakteri gram negatif, spesies Escheria coli. Gas kromatografispektrometri massa digunakan untuk analisis komposisi kimia minyak jeruk purut. Nilai IC50 dari minyak jeruk purut diperoleh sebesar 6,43 (L/mL);6,83 (L/mL);9,48 (L/mL); 10,1(L/mL) dan 10,2 (L/mL), berturut-turut untuk minyak jeruk purut dari kulit buah, daun, campuran ranting-daun, sitronelal dan sitronelol. Dibandingkan terhadap minyak jeruk purut yang lain maupun komponen sitronelal dan sitronelol, minyak jeruk purut dari kulit buah menunjukkan aktivitas paling kuat dalam menghambat pertumbuhan bakteriE. coli,dengan nilai MIC 12,5µL/mL. Analisis GC-MS menunjukkan bahwasitronelal dan sitronelol sebagai komponen utama dalam minyak jeruk purut dari daun dan campuran ranting-daun, sedangkan komponen utama dalam minyak jeruk purut dari kulit buah adalah -pinen, limonen, sitronelal dan terpinen-4-ol. Kata kunci: minyak jeruk purut, sitronelal, sitronelol, antioksidan, antimikroba

K110 - PENGEMBANGAN MEDIA PEMBELAJARAN KESETIMBANGAN KIMIABERBASIS MULTIPLE REPRESENTATIF UNTUK MAHASISWA PENDIDIKAN KIMIA FKIP UNIVERSITAS JAMBI Wilda Syahri, Muhaimin,Yusnaidar 1

Prodi Pendidikan Kimia, PMIPA FKIP, Universitas Jambi, Mendalo

Darat, Jambi, Email: [email protected]

Abstract: The purpose of this study was to develop a chemical equilibrium learning media based on multiple representations (macroscopic, sub microscopic andsymbolic). In this research, the ADDIE model was applied, which has the main purpose as product development and testing of product effectivity in achieving its objectives in this study. Instrument sheets used for collecting data were validation of media and validation of material questionnaires. The main result of this study is a chemistry learning media on chemical equilibriumbased on multiple representations. The results showed that quality of prototype I of interactive learningmedia of chemical equilibriumbased on multiple representations is very good based on validationresults from chemistry expertswith a meanscore of 4.45and while based on validationresultsof multimedia experts is very good with amean score of 4.41. Validationresultsshowedthat theprototype I could be applied to the students in classroom after some revision from chemistry and multimedia experts. The prototype II is a revised version of prototype I, from which its contentand display are better, in accordancewithrecent curriculum, the rules and elements ofeducation. Keywords: chemical equilibrium, multiple representations, ADDIE model

K111 - PENINGKATAN STABILITAS ENZIM SELULASE DARI BAKTERI ISOLAT LOKAL Bacillus subtilis ITBCCB148 DENGAN PENAMBAHAN SORBITOL Yandri, Sundari Riawati, Putri Amalia, Mulyono, Tati Suhartati Jurusan Kimia FMIPA, Universitas Lampung, Jalan Soemantri Brojonegoro No. 1, Bandar Lampung 35145, E-mail: [email protected]

Abstrak: Penelitian ini bertujuan untuk mempelajari pengaruh penambahan sorbitol terhadap stabilitas enzim selulase hasil pemurnian dari bakteri lokal Bacillus subtilis ITBCCB148. Untuk mencapai tujuan tersebut dilakukan produksi, isolasi, dan pemurnian enzim selulase. Penambahan sorbitol terhadap enzim hasil pemurnian dilakukan dengan variasi konsentrasi 0,5; 1,0; 1,5 M. Enzim setelah penambahan sorbitol dan enzim hasil pemurnian dikarakterisasi meliputi: penentuan suhu optimum, pH optimum, data kinetika dan stabilitas termal. Aktivitas enzim ditentukan dengan Metode Mandels dan kadar protein ditentukan dengan metode Lowry. Hasil penelitian menunjukkan enzim hasil pemurnian mempunyai pH optimum 5,5 dan suhu optimum 50 oC. Nilai KM = 26,42mg/mL substrat, Vmaks = 4,42 μmol mL-1 menit-1. Uji stabilitas termal selama 100 menit pada suhu 50oC enzim hasil pemurnian mempunyai k i = 0,0121 menit-1, t1/2 = 57,27 menit, dan ΔGi = 102,19kJ/mol. Enzim setelah penambahan sorbitol (0,5; 1,0; 1,5 M)berturut-turut mempunyai suhu dan pH optimum yang sama dengan enzim hasil pemurnian yaitu; suhu optimum 50oC dan pH optimum 5,5. Nilai KM enzim setelah 34


Kumpulan Abstrak Kelompok Kimia (K) penambahan sorbitol (0,5; 1,0; 1,5 M) berturut-turut:22,23; 18,58; 19,85 mg/mL substrat, sedangkan Vmaks berturut-turut: 3,71; 3,49 dan 3,64 μmol mL-1 menit-1. Uji stabilitas termal enzim setelah penambahan sorbitol (0,5; 1,0; 1,5 M) selama 100 menit pada suhu 50oC mempunyai berturut-turut: t1/2 = 90,00; 99,00 dan 92,40 menit; ki = 0,0077; 0,0070; 0,0075 menit-1;ΔGi = 103,41; 103,66 dan 103,48 kJ/mol. Peningkatan t1/2 dan ΔGi, serta penurunan ki menunjukkan terjadi peningkatan stabilitas enzim setelah penambahan sorbitol hingga 1,61,7 kali. Kata kunci: Selulase, Bacillus subtilis ITBCCB148, sorbitol.

K112 - POTENTIAL OF KEMANGI LEAVES (Ocimum basilicum L.) AS CORROSION INHIBITOR STEEL St.37 IN HYDROCHLORIC ACID MEDIUM Yeni Stiadi, Emriadi, and Putri A. Rahmi FMIPA Universitas Andalas, [email protected]

Abstract: Several methods have been used to study the adsorption properties and the inhibition effect of the extract of kemangi leaves (Ocimum basilicum L.) for steel St.37 in hydrochloric acid medium. Corrosion rate of steel decreases with increasing concentration of the extract and increases with increasing temperature of the medium, while the inhibition efficiency instead. The highest efficiency of 95.46% in 1 N HCl containing 0.5% kemangi leaves extract at a temperature of 300C. Efficiency decreased to 58.73% at a temperature of 600C. Corrosion inhibition of steel St.37 in 1 N HCl with the addition of kemangi leaves extract follows the Langmuir adsorption isotherm. Potentiodynamic polarization analysis showed kemangi leaves extract is an inhibitor mixture. SEM analysis shows different surface morphology of steel without and with the addition of kemangi leaves extract. Keywords: corrosion, Omicum basilium L., corrosion inhibitor

K113 - PENGEMBANGAN MODUL KESETIMBANGAN KIMIA BERBASIS PENDEKATAN SAINTIFIK UNTUK KELAS XI SMA/MA Yerimadesi, Bayharti, Fitri Handayani, Wiwit Fitrah Legi Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, email: [email protected]

Abstract: This developmental research aimed to produce scientific approach-based module in chemistry equilibrium topic, determine its validity, practicality, and effectiveness on grade XI students‟ learning outcome. It was based on 4-D development model that included defining, designing, and developing stage. Module was validated by expert and tested to senior high school (SMA) students. Research instruments used were questionnaire in the form of validity and practicality sheets and learning outcome test. Validity sheets were completed by 5 chemistry lecturers and 3 chemistry teachers. Practicality sheets were completed by 4 chemistry teachers and 25 grade XI students in public SMA (SMAN) 2 Batusangkar. Data were analyzed with Kappa Moment. The mean score of Kappa Moment for validity was 0.80 indicating a high degree of validity. The mean score of Kappa Moment for practicality were 0.87 (for students) and 0.83 (for teachers) indicating a very high degree of practicality. Effectiveness of the module was obtained from cognitive test score of students in SMAN 4 Padang. Analysis showed that the test score of students taught with module was siginificantly higher than that of students who were not. It can be concluded that the module developed was valid, practical, and effective for senior high school instruction. Keywords: module, scientific approach, chemistry equilibrium.

K114 - PENERAPAN TGT (TEAM GAMES LEARNING) DENGAN MIND MAPPING PADA TOPIK ASAM BASA Yovy Ardianti, Ayu Lestari Nababan,Yoga Kristina Ginting, Putri Andrayani Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Email: [email protected]

Abstract: We have done observation about the implementation of learning Team Games Tournament with Mind Mapping media in topic Acid and Base. The implementation of this model is reasoned to give positive effect in student‟s knowledge construction and hoped it may increase student‟s understanding about the topic. This observation aimed to: 1)increased student‟s conceptual understanding, 2)increased student‟s social ability, 3) know the student‟s responses of the implementation Team Games Tournament with Concept Mapping media. This observation used class acted observation planning with 2 cycles. Each of them consist of planning , implementing, act implementation, observation and reflection. The object observation is students in Class XIScience 2 SMAN 17 Medan totaled 37 students. This observation instruments consist of written test as objective questions type and non-test instrument as a questionnaire and direct observation. The observation result showed that : 1)Student‟s understanding increased 47.25% in 1 st cycle become 72.08% in 2nd cycle, 2) Student‟s social


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Kumpulan Abstrak Kelompok Kimia (K) ability increased till 82.15% of which have at least good social ability, 3) Student showed positive response in learning Acid and Base using Team Games Learning model with Concept Mapping media. Keywords: Model pembelajaran, TGT (Team Games Tournament), Mind Mapping, Acid and Base, Students Learning Outcomes.

K115 - Test the antioxidant activity of the extract of the fruit Shorea sumatrana method of 1,1diphenyl-2-picrylhydrazyl (DPPH) Yusnelti PMIPA FKIP Universitas Jambi

Abstract: Plant Shorea sumatrana a potential oil-producing plants in the flower as a natural preservative, cosmetic ingredients, raw materials butter, and the lipstick. Oil from Shorea sumatrana of the results of the preliminary study identified the compound class of flavonoids, phenolic and quinone compounds. The results of previous studies of treatment for noodle, oil from the fruit Shorea sumatrana to power resilience noodles, noodles produced lasting for 7 days (Yusnelti, 2008). The aim of research to find out the results Shorea sumatrana fruit extracts as antioxidants, method used is using the solvent n-hexane to soxhletation sumatrana Shorea fruit, the fruit has been managed in isolation Shorea sumatrana and be treated with testing antiokasidan using 1,1-diphenyl-2- picrylhydrazyl DPPH, the measurements are made with UV-vis spectrophotometer UV. Results obtained from tests with DPPH antioxidant activity of fruit extraction Shorea sumatrana produce absorbent at 0.019 and inhibition of 95.5%, vitamin C (control +) absorbent 0.015 and inhibition of 96.1 This indicates that the fraction of ethyl acetate have antioxidant activity better and have a standard approach positive activity (vitamin C). Keywords: antioxidant soxhletation, shorea sumatrana 1,1-diphenyl-2-picrylhydrazyl (DPPH)

K116 - SINTESIS DAN ANALISIS STRUKTUR SENYAWA AURIVILLIUS BERLAPIS EMPAT, PbBi3.5Nd0.5Ti4-xMnxO15 Zulhadjri, Habil Lutfi,Tio Putra Wendari, dan Syukri Arief Jurusan Kimia FMIPA Universitas Andalas, Kampus Unand Limau Manis, Padang – Sumatera Barat, email: [email protected]

Abstract: Aurivilliusphasesare a metal oxidecompound with general formulae [Bi 2O2]2+[An-1BnO3n+1]2-. These phases are synthesized to study their ferroelectric properties which has high phase transition temperature. Fourlayers Aurivilliusphase PbBi3.5Nd0.5Ti4-xMnxO15with x = 0 and 0.5 has been carried out by molten salts technique using Na2SO4/K2SO4 as the flux. The products were characterized by X-Ray diffraction (XRD), Scanning Electron Microscopy (SEM), and TGA-DTA. All XRD data were refined by RIETICAprogram with Le Bail method.The results show that all samples formed four layers Aurivillius phasewith orthorhombic structure however a small other phase was also observed for x = 0.5. The morphology of the samples showed plate-type crystalsas the characteristic of Aurivillius phase. The products are stable as heating up to 1000 C. Keywords: Aurivillius phase, molten salts technique, ferroelectric properties

K117 - PENGARUH SUHU PEMBAKARAN TERHADAP PERFORMANCE TiO2/C BERPENDUKUNG KERAMIK SEBAGAI ELEKTRODA SUPERKAPASITOR Admin Alif, Olly Norita Tetra, Emriadi, dan Aliza Rosdianty Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas Padang; Email: [email protected]

Abstract: Effect of calcinations temperature on the performance of TiO 2/C reinforced ceramics as a supercapacitor electrode has been investigated. TiO2 sols was synthesized with sol-gel method. The ceramic electrodes was coated by TiO sol with temperature calcined variant of 150oC, 250oC, 350oC, 450oC, and without calcined. Measurement results showed that the highest capacitance is given by the ceramic electrodes are coated titania sol without calcined and lowest capacitance given by the ceramic electrodes was coated by TiO 2 sols with 250oC calcined temperature. Keywords: Supercapacitors, EDLC, sol gel methodes, Capacitance

K118 - PERBANDINGAN KOMPONEN KIMIA MINYAK JERUK HASIL DISTILASI DAN FERMENTASI MENGGUNAKAN FUSARIUM OXYFARUM Afghani Jayuska, Nurma Fitriana FMIPA, universitas Tanjungpura; email: [email protected], [email protected]

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Kumpulan Abstrak Kelompok Kimia (K) Abstrak: Salah satu produk ungggulan Kalimantan Barat yaitu Jeruk Pontianak (Citrus nobilis) yang berasal dari Kecamatan Tebas Kabupaten Sambas. Kulit buah dan daunnya belum dimanfaatkan sehingga menjadi limbah organik. Apabila limbah tersebut dibiarkan menumpuk di alam akan menimbulkan pencemaran lingkungan. Padahal kulit buah jeruk memiliki kandungan minyak atsiri. Tujuan penelitian ini yaitu pemanfaatan kulit buah jeruk sebagai sumber minyak atsiri dan perubahan komponen kimia minyak atsiri tersebut melalui proses fermentasi oleh Fusarium oxyparum. Kulit jeruk (C. nobilis) segar sebanyak 23.5 kg didistilasi selama 6 jam sehingga diperoleh minyak atsiri jeruk sebanyak 494 ml dengan rendemen hasilnya sebesar 1,70 % (w/w) dan berat jenis minyak (ρ) 0,81 g/ml. Analisis GC-MS dari minyak atsiri diperoleh beberapa komponen yaitu limonen( 83,43 %), β-mirsen(5,85%),α-pinen (1,2%), Linalool(1,94%) dan Terpeniol(0,71%). dan kemudian minyak jeruk ini difermentasimenggunakan Fusarium oxyfarum diperoleh Limonen (3,58%), dan Linalool (5,7%) serta turunan asam karboksilat. Adanya penuruan komposisi dari limonen dari 83,43% menjadi 3,58% dan pembentukan linalool dari 1,94% menjadi 5,72%. Berarti telah terjadinya perubahan sebagian Limonen menjadi Linalool. Kata kunci: Citrus nobilis, Distilasi, Fermentasi, limonen, fusarium oxyfarum

K119 - UJI TOKSISITAS ION LOGAM Pb2+ TERHADAP BERBAGAI JENIS IKAN Andi Arif Setiawan1 dan Arinafril 2 1

Mahasiswa PPS Universitas Sriwijaya, Staf pengajar Univ. PGRI Plg, 2Staff pengajar PPS Universitas Sriwijaya

Abstrak: Telah dilakukan penelitian uji toksisitas ion Pb2+ dengan konsentrasi 5,964 ppm, yang berasal dari residu pengolahan limbah dengan menggunakan bioadsorben limbah biomasa. Pada konsentrasi tersebut terlebih dahulu dilakukan uji pendahuluan toksisitas terhadap berbagai jenis ikan, meliputi : ikan mas, mujair dan nila. Dimana konsentrasinya tersebut divariasikan dari 0; 1,491; 2,982; 4,473 dan 5,965 ppm selama 96 jam. Pengamatan terhadap kematian ikan dilakukan setiap 8 jam dengan 3 perulangan. Hasil uji pendahuluan toksisitas yang dilakukan tidak menunjukan kematian ikan-ikan (sublethal), ini menunjukan bahwa pada konsentrasi tersebut ikan masih mampu menetralisir ion Pb 2+, ini dikarenakan adanya enzim cytocrom P450 yang meningkatkan kelarutan ion Pb2+ dan glutation transferase serta UDP glukoronil trasferase (UDPGT) yang berperan mengeluarkan racun dari tubuh (eksekresi). Penentuan Konsentrasi yang dapat membunuh 50 % hewan uji (LC50) dilakukan dengan program SPSS, didapatkan nilai LC50 untuk ikan mas, mujair dan nila masingmasing 12,376; 12,764 dan 14,756 ppm. Sedangkan waktu yang dapat membunuh 50 % hewan uji (LT 50) terjadi pada 127,158; 126,18 dan 340,46 jam. Kata kunci: Uji toksisitas, ion Pb2+, Berbagai jenis ikan, LC50 dan LT50

K120 - THE DEVELOPMENT OF PROBLEM BASED LEARNING TO IMPROVE STUDENTS COMPETENCY IN PHASE EQUILIBRIUM Ani Sutiani, Nurmalis, dan Rahmat Nauli Chemistry Department, Faculty of Mathematicsand Natural Science, State University of Medan, Email : [email protected]

Abstract: The problem based learning is needed to improve critical thinking skill and problem solving ability in order to improve student competency on the subject of Phase Equilibrium. The research is aimed to develop a problem-based learning materials including development exercises and standard evaluation based of competency and material, and set of problem based experiment for Phase Equilibrium subject. The research carried out is Research and Development (R & D)with the stages of the research is to develop teaching materials through the enrichment of materials, preparation exercises and standards evaluation, integrating set of experiment and learning activities, and the feasibility of teaching materials development results, and implementation of problem-based teaching materials to improve the learning outcomes of students on the subject of Phase Equilibrium.. The results showed that the problem-based teaching materials for teaching on the subject of Phase Equilibrium has been successfully developed. The development of problem-based learning includes enrichment material integration with experiment activities, exercises and standards evaluation and learning activities, able to develop critical thinking skills and problem solving that can improve student competency. Student achievement which are taught by a problem-based learning was found higher than student achievement which are taught by a conventional learning. Keywords: Problem Based Learning, Students Competency, Phase Equilibrium.

K121 - THE IMPLEMENTATION ENVIRONMENT -BASED LEARNING TO IMPROVE EFFECTIVENESS OF CHEMISTRY LEARNING Anita Herda SMA N 1 Muara Bungo, Jambi, [email protected]

Abstract: From observation and experience has shown that the application of the method of discussion and demonstration in chemistry learning is not effective to increase the activity and achievements of learners. Limitations of existing chemicals in the laboratory led to experiments rarely implemented. The alternative is to SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) use materials from the surrounding environment base on local-advantage.This study aims to determine the increase in activity and achievement of learners by applying experimental methods using materials from the surrounding environment in chemistry learning in class XII MIPA 1st half. The subjects were 38 students of class XII MIPA in the 1st half at SMA N 1 Muara Bungo. This research was conducted in three cycles, and each cycle consisting of planning, implementation, evaluation, and reflection. Preparation of the learning takes place at the planning stage. The learning process is done through experiments, discussions, presentations, and assignments. The results showed that an increase in the activities and achievements of learners each cycle. It can be concluded that the application of environment-based learning can improve the effectiveness of learning chemistry class XII MIPA 1st half. Keywords: environment, learning, activities, achievements, the effectiveness

K122 - AKTIVITAS SITOTOKSIK EKSTRAK HERBA GENUS LYGODIUM TERHADAP SEL HeLa Ari Widiyantoro 1), Sri Luliana 2) dan Sri Wahdaningsih 2) 1

Program Studi Kimia, Fakultas MIPA, Universitas Tanjungpura, Pontianak 78124, email: [email protected]. 2Program Studi Farmasi, Fakultas Kedokteran, Universitas Tanjungpura, Pontianak 78124, email: [email protected]

Abstract: Crude extracts and fractions of three species Ligodium have been prepared and monitored for cytotoxic activities against the HeLa cell line. Cytotoxic test showed that ethyl acetate fraction of Lygodium longifolium is highly potential against the HeLa cell line with IC50 10.9 µg/mL. Phytochemicals screening showed alkaloids, flavonoid, terpenoids and steroids. Keywords: Lygodium, Cytotoxic activity, HeLa cell line

K123 - PROFIL SCFA (SHORT CHAIN FATTY ACID) CAIRAN RUMEN DENGAN PERLAKUAN RANSUM TOTAL MIX RATION SAWIT PADA WAKTU INKUBASI YANG BERBEDA SECARA IN SACCO. Armina Fariani, Gatot Muslim, Dyah Wahyuni, Langgeng Priyanto, Arfan Abrar. Program Studi Peternakan Fakultas Pertanian Universitas Sriwijaya, email:[email protected]

Abstrak: Tujuan dari penelitian ini adalah mempelajari profil Short Chain Fatty Acid (SCFA) cairan rumen dengan perlakuan ransum total mix ration (TMR) sawit pada waktu inkubasi yang berbeda secara in sacco. Ransum TMR sawit disusun dengan menggunakan hasil ikutan kelapa sawit diinkubasi pada Sapi Bali yang berfistula (BeratBadan280 kg). Cairan rumen diambil pada waktu inkubasi 0, 6 dan 12 jam untuk dianalisa dengan metode Kromatografi Cair Kinerja Tinggi (KCKT). Peubah yang diamati adalah konsentrasi asetat, propionat, butirat, total konsentrasi SCFA dan rasio asetat-propionat. Penelitian ini menggunakan Rancangan Acak Lengkap( RAL) dengan 3 perlakuan (0 , 6, dan 12 jam) dan 9 ulangan. Hasil penelitian menunjukkan bahwa hanya profil propionat yang dipengaruhi waktu inkubasi sedangkan untuk peubah lainnya tidak.. Kata Kunci: Fistula, in sacco, Konsentrasi SCFA, Kromatografi Cair Kinerja Tinggi, TMR Sawit,

K124 - ANALISIS PEWARNA RHODAMIN B PADA LIPSTIK YANG BEREDAR DI PASAR TRADISIONAL KOTA JAMBI Armini hadriyati, Lia Anggresani, Lili Kurniati Program Studi Farmasi STIKES Harapan Ibu Jambi

Abstract: Rhodamine B is the colour synthetic essence that banned its use in cosmetic. Rhodamine B caused irritation of respiratory tract that has carcinogenic characteristic in high concentration that coused liver damage. The purpose of this research proved is there any Rhodamin B as cosmetic dye in Lipstic that circulate in Tradisional market in Jambi city or not by using using the thin layer chromatography with eluent (n-Butanol – Acetat glacial acid and ammonia = 5:3:3) and to know its sample, by doing the spectrophotometry UV-Vis tested. This research is done on February -March 2016. Four samples are positive containing Rhodamine B and eight samples negative containing Rhodamin B from twelve samples has been research. The conclusions of this research is the discovery of four sample are positive containing Rhodamine B dye, with the highest levels sample F 0.115726 mg/ml and the lowest sample B of 0.028476 mg/ ml. Keywords: Rhodamine B, Lipstic, Thin Layer Chromatography, Spectrofotometry UV-Vis.

K125 - BIOSURFAKTANDARIPSEUDOMONAS PELI PADA BERBAGAI SUMBER KARBON SEBAGAI AGENANTI KERAKUNTUK PIPA MINYAK BUMI Bambang Yudono, Widia Purwaningrum, Cinthia Fajri Jurusan Kimia FMIPA UniversitasSriwijaya, 1E-mail: [email protected]

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Kumpulan Abstrak Kelompok Kimia (K) Abstract: Biosurfactant production by Pseudomonas peli with molase, crude oil, and coconut oil‟s waste as carbon source were tested as scale inhibitor in crude oil distribution pipe. The study aims to determine the best carbon source for biosurfactant produced by Pseudomonas peli. Biosurfactant production as scale inhbitorwas tested by using gravimetric analysis methode. The result of research showed that Pseudomonas peli growth which was the best in molase as carbon source with the total number of living cells as much 1.8 x 10 9 CFU/mL and it could dissolve scale with the percentage of soluble scale in biosurfactant solution 20% as much 16.01%. The extract components qualitatively were identified by using GC, it showed that the hydrocarbon composition of soluble scale in each biosurfactant were different. Keywords: Biosurfactant, Pseudomonas peli, carbon source, molase, scale

K126 - AKTIVITAS SITOTOKSIKFRAKSI TOTAL FLAVONOID DAUN PALA (Myristica fragrans Houtt) DENGAN METODE BRINE SHRIMP LETHALITY (BSLT) Binawati Ginting1) Hira Helwati1) Lamek Marpaung 2) Partomuan Simanjutak3) 1

Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala, email: [email protected]. 2Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara. 3LIPI Cibinong dan Universitas Pancasiala Jakarta

Abstrak: Penelitian tentang isolasi fraksi-fraksi total flavonoid daun Pala (Myristica fragrans Houtt) dan uji toksisitasnya dengan metode Brine Shrimp Lethality Test (BSLT) telah dilakukan. Daun Pala 3 Kg (3000 g) diekstraksi dengan metanol. Ekstrak metanol diekstraksi dengan etil asetat kemudian dipartisi lagi dengan nheksana sehingga diperoleh total flavonoid (F1). Total flavonoid (F1) dihidrolisis dengan HCl 6N sehingga diperoleh total flavonoid hasil hidrolisis (F2). Total flavonoid (F2) dipisahkan fraksi-fraksinya dengan kromatografi kolom gravitasi dengan silika gel 60 G dan eluen n-heksana dan etil asetat (elusi gradien) diperoleh 10 fraksi Myristica fragrans Daun hasil Hidrolisis (MFDH 1-10). Masing-masing fraksi MFDH 1 – 10 ditentukan aktivitas sitotoksik terhadap benur udang pada konsentrasi 10, 100, dan 500 ppm. Hasil uji aktivitas sitotoksik fraksi-fraksi total flavonoid MFDH 1-10 dengan metode BSLT menunjukkan bahwa yang mempunyai aktivitas sitotoksik yang paling kuat adalah fraksi MFDH 1 dan MFDH 9 dengan nilai LC50 35,83 ppm dan 39,92 ppm. Kata kunci: Pala Myristica fragrans Houtt), Myristicaceae, fraksi total flavonoid, toksisitas, BSLT

K127 - HYDROXYAPATITE-CHITOSAN COMPOSITE COATING ON TiAl ALLOY ELECTROPHORETIC DEPOSITION METHOD Charlena, Irma Herawati Suparto, Chonny Damayanti FMIPA Institut Pertanian Bogor, email: [email protected]

Abstract: TiAl alloys is commonly used for bone implant applications because it has good biocompatibility. However, in long term usage of metal implants, metal release, which can harm the body, may occur. The metal release can be inhibited by hydroxyapatite-chitosan composite coating on the metal surface using Electrophoretic Deposition (EPD) method. EPD method carried out with 200 v for 40 and 60 minutes, to compare the impact of different interval time in producing the best product. The coated alloy was observed physically by SEM and showed that 60 minute-treatment produced better result. The XRD and FTIR analysis shows that the composite of hydroxyapatite-chitosan has successfully coated on TiAl alloy. The coated TiAl alloy also has low corrosion rate and could potentially be used as bone implants. Keywords: chitosan, electrophoretic deposition, hydroxyapatite, TiAl

K128 - Transesterifikasi Minyak Jelantah Kelapa Sawit menjadi Biodiesel Menggunakan Katalis ZeolitY melalui Proses Esterifikasi Diah Mastutik Program Studi Ilmu Kimia, Fakultas Sains dan Teknologi Universitas Jambi

Abstrak: Telah dilakukan penelitian transesterifikasi minyak jelantah kelapa sawit menjadi biodiesel menggunakan katalis zeolit-Y melalui proses esterifikasi. Zeolit-Y digunakan sebagai katalis asam padat pada reaksi esterifikasi asam lemak bebas minyak jelantah kelapa sawit dalam media metanol dengan variasi konsentrasi katalis 1,25%; 2,50%; 3,75%; 5,00%; dan 6,00% terhadap berat (minyak + metanol) pada variasi temperatur 30°C, 45°C dan 70°C. Reaksi dilanjutkan dengan transesterifikasi trigliserida minyak jelantah kelapa sawit menggunakan katalis NaOH dalam media metanol. Karakterisasi zeolit-Y meliputi penentuan keasaman dengan metode gravimetri, luas permukaan spesifik, volume total pori dan rerata jejari pori dengan menggunakan metode BET. Produk metil ester (biodiesel) dianalisis dengan Gas Chromatography (GC), Gas Chromatography-Mass Spectroscopy (GC-MS). Karakter biodiesel dianalisis dengan metode uji ASTM (American Society for Testing Materials).


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Kumpulan Abstrak Kelompok Kimia (K) Hasil penelitian menunjukkan bahwa keasaman katalis zeolit-Y 0,02 mmol/g, luas permukaan spesifik 475,94 m2 /g, volume total pori 214,47 x 10-3 cc/g, dan rerata jejari pori 86,99 Å. Konversi biodiesel terbesar dicapai pada konsentrasi katalis zeolit-Y 3,75% pada temperatur 70°C sebesar 74,05% (b/b). Berdasarkan data ASTM, biodiesel yang diperoleh memiliki kualifikasi sebagai bakan bakar diesel dan memenuhi karakter minyak diesel otomotif. Kata kunci: Biodiesel, Esterifikasi, Transesterifikasi.

K129 - Profiling on secondary metabolite of the flavonoid which is synthesized in the tissue culture of callus, cell suspension and root of Kacang Tunggak (Vigna unguiculata) Edi Priyo Utomo Jurusan Kimia Fakultas MIPA Universitas Brawijaya, Email : [email protected]

Abstract: Plant cells perform various activities biosynthesis of secondary matebolites that have a variety of potential for human health. Kacang tunggak (Vigna unguiculata) has been well known as edible plant that the plant produce a variety of flavonoid compounds which have phytoestrogen activity. In this study the metabolite secondary profile of tissue culture of callus, suspension cells and roots which produced from meristemic plant of kacang tunggak has been carried out. Induction of cell culture performed using explants root was cultured in solid and liquid medium (MS) containing the synthetic hormone growth regulators. Furthermore, the methanol extract of callus and suspension cells, and also root culture were analyzed their secondary metabolite profile using LC-MS/MS. From their LC/MS TIC chromatograms of the three samples showed some peaks of the deprotonated molecular ions [M-H]- from each of the samples. By comparing with references material, the cells and root showed deprotonated molecular ion at m/z 253, 267, 269, 285 which correspond to daidzein, coumsetrol, genistein, luteolin. The profile of tissue culture of root is more complicated secondary metabolite than callus and cell suspension. Vigna furan, the specific secondary metabolite of kacang tunggak only can be detected in root culture and their root-intake plant. Keywords: plant tissue culture, profiling, flavonoid,

K130 - STUDI POTENSI MINYAK JAMUR DARI JAMUR ENDOFITIK SEBAGAI SUMBER BAHAN BAKU BIODISEL Elfita 1*, Muharni1, Munawar2 1

Jurusan Kimia, 2Jurusan Biologi, FMIPA, Universitas Sriwijaya, Jalan Raya Palembang Prabumulih Km 32, Indralaya, Kabupaten Ogan Ilir, Sumatra Selatan, 30662, *email: [email protected]

Abstrak: Minyak nabati dapat dijadikan feedstock untuk memproduksi biodiesel karena merupakan sumber energi yang dapat diperbarui, dapat diproduksi skala besar, dan ramah lingkungan.. Kemampuan jamur endofit memproduksi minyak merupakan peluang yang sangat menantang dalam penyediaan bahan baku biodisel. Pada penelitian ini telah dieksplorasi minyak jamur dari jamur endofitik Unidentified (SbB1) yang berasal dari batang sambiloto(Andographis paniculata). Suspensi jamur endofitik telah diinokulasikan spora jamur endofitik sebanyak 5% (v/v) dalam 300 ml medium PDB yang ditempatkan pada botol 1 liter (sebanyak 9 L dalam 30 botol) dan diiinkubasi pada suhu kamar sesuai kurva pertumbuhan. Pada akhir inkubasi kultur dipanen dengan cara menyaring medium dengan kertas saring, miselium yang tertahan dalam kertas saring dipanen, selanjutnya dilakukan proses ekstraksi minyak jamur. Identifikasi minyak jamur dilakukan berdasarkan data spektroskopi FTIR dan 1H-NMR. Kata kunci: minyak jamur, jamur endofitik, Andographis

paniculata, biodisel

K131 - ISOLASI MIKROALGA DARI PERAIRAN AIR TAWAR DIALIRAN SUNGAI DAERAH LUBUK MINTURUN YANG BERPOTENSI UNTUK PRODUKSI BIODIESEL Elida Mardiah, Nasrul Zuwardi, dan Zulkarnain Chaidir Laboratorium Biokimia Jurusan Kimia FMIPA Unand, (e-mail : [email protected])

Abstrak: Penelitian untuk mengisolasi mikroalga dari perairan air tawar di aliran sungai daerah Lubuk Minturun yang berpotensi untuk produksi biodiesel telah dilakukan. Dari hasil isolasi menggunakan metoda dilusi didapatkan 2 spesies mikroalga yang diduga merupakan Scenedesmus dimorphus dan Scenedesmus quadricauda melalui pengamatan dengan mikroskop cahaya pada perbesaran 400 X. Kedua spesies ini memberikan perpendaran cahaya dengan menggunakan metoda pewarna nile-red dibawah mikroskop flourisen yang memperlihatkan potensi produksi lipid. Dari pengamatan ini Scenedesmus dimorphus memberikan perpendaran lebih terang mengindikasikan kadar lipid lebih tinggi. Ekstraksi lebih lanjut dilakukan terhadap spesies ini menggunakan pelarut air dan heksana untuk mendapatkan ekstrak kasar lipid. Lipid yang diperoleh kemudian ditransesterifikasi menggunakan katalis asam dan basa. Hasil transesterifikasi dianalisis dengan GC-MS, teridentifikasi 10 jenis metil ester asam lemak yang memiliki potensi sebagai biodiesel.

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Kumpulan Abstrak Kelompok Kimia (K) Kata kunci: Mikrolaga, nile red, transesterifikasi, GC-MS, metil ester asam lemak

K132 - EFEKTIVITAS MEDIA PEMBELAJARAN BERBASIS WEB UNTUK MENINGKATKAN PRESTASI SISWA PADA PEMBELAJARAN ASAM DAN BASA Elvianna U Manihuruk Jurusan Kimia UniversitasNegeri Medan, Jl. WilliemIskandarPsr V Medan Estate, Medan, Sumatera Utara, Indonesia, 20221, Email : [email protected]

Abstract: The trend on using of web based learning media in the teaching and learning process is explained in this paper. This process has increased now days as it believed that the web based learning media would improving student‟s achievement. The study is aimed to investigate the effectiveness of web based learning media to improve student achievement on the teaching of acid and base in senior high school student.The research is consisted of the development of web based learning media, the standardization of the media and implementation of the media web based learning in the teaching and learning process. The research was conducted in the SMA GKPI Pamen,Medan with the subject of research student in the XI-Sience. The study is conducted by teaching student with development web based learning media concept followed by pretest and posttest to obtain learning outcomes. The result showed that the student achievement on the teaching of acid and base by using web based learning media in the average value of pretest for experimental group (M= 41.17±12.49)while for the control class (M=37.35±12.86) and the significant different from both of themtcount104.09>ttable 67.73. After the teaching process the everage of post test for

experimental class is M= 87.05± 8.35 and for the control class is M = 84.70± 7.87 and the significant difference for both of ittcount58.35>t table50.74. The percentageeffectiveness of experimental class with control class is 62.9 % as quite enough categorized. Keywords: web based learning, effectiveness, acid and base

K133 - SINTESIS NANOPARTIKEL ZnO DALAM MEDIUM EKSTRAK AIR Hibiscus rosa sinensis DAN Allium sativum Evi Maryanti, Irfan Gustian, Bunga Marcelina, Asdim Fakultas MIPA, Universitas Bengkulu, email: [email protected]

Abstract: ZnO nanoparticles have been synthesized in medium aqueous extract of Hibiscus rosa sinensis and Allium sativum as capping agent. The synthesis was conducted by using a modified hydrothermal method at a ⁰ temperature of 90 – 95 C in the oven. The current conditions produced the desired ZnO nanoparticles with difference shapes and crystallinity depending on the concentration of aqueous extract of Hibiscus rosa sinensis and Allium sativum. Keywords: ZnO nanoparticle, Hibiscus rosa sinensis, Allium sativum, capping agent

K134 - BAHAN AJAR BERBASIS MULTIMEDIA INTERAKTIF PADA MATERI IKATAN KMIA KELAS X DI SEKOLAH MENENGAH ATAS F. Eka Safitri1), Fuad Abdurachman2), Hartono3) 1

Fakultas Keguruan dan Ilmu Pendidikan, Universitas Sriwijaya, 2SMAN 1 Indralaya Utara, [email protected],

Abstrak: Penelitian ini bertujuan untuk menghasilkan produk bahan ajar berbasis multimedia interaktif yang valid, praktis dan memiliki efektivitas terhadap hasil belajar peserta didik pada materi ikatan kimia di kelas X Sekolah Menengah Atas Negeri 1 Indralaya Utara. Metode penelitian yang digunakan adalah penelitian pengembangan dengan model pengembangan Alessi dan Trollip, yang terdiri dari tiga tahap yaitu perencanaan, desain, dan pengembangan. Kevalidan bahan ajar diuji melalui uji alpha, praktikalitas bahan ajar diuji melalui uji betha, sedangkan untuk melihat efektivitasnya terhadap hasil belajar dilakukan uji coba produk pada kelas sebenarnya. Hasil uji coba produk menunjukkan adanya peningkatan hasil belajar sebesar 44,37 dengan ratarata hasil pretest sebesar 32,19 sedangkan hasil posttest sebesar 76,56 serta diperoleh N-gain score sebesar 0,65 (kategori sedang). Kesimpulan dari penelitian ini bahwa bahan ajar berbasis multimedia interaktif yang dikembangkan telah valid, praktis dan memiliki efektivitas terhadap hasil belajar peserta didik. Saran dari penelitian ini, yaitu: (1) bagi peneliti lain, diharapkan agar dapat mengembangkan game dan soal-soal untuk materi ikatan logam;(2) bagi guru, diharapkan media yang dihasilkan dapat digunakan sebagai salah satu bahan ajar yang mempermudah penyampaian materi pelajaran; (3) bagi sekolah, diharapkan agar bahan ajar berbasis multimedia interaktif ini digunakan sebagai sumber belajar pada mata pelajaran kimia kelas X dan dapat digunakan sebagai percontohan. Kata kunci: penelitian pengembangan, bahan ajar, multimedia interaktif, ikatan kimia


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K135 - The Characteristic Mixtures Solar with Biodiesel from Ketapang Seed Oil (Termaniliacatappa linn) using NaOH Catalyst Fahma Riyanti*, Poedji Lukitowati H., dan Juli Hartati Department of Chemistry, Faculty Mathematics and Natural Science, Sriwijaya University, *[email protected]

Abstract: It has been done the research about “The Characteristic Mixtures Solar with Biodiesel from Ketapang Seed Oil (Termanilia catappa linn) using NaOH Catalyst‟‟. The purpose of research is to determine the optimum condition blending solar with biodesel from ketapang seed oil. Biodesel 0% 5% 15% 25% 35% 45% 55% 65% 75% 85% 95% 100% which characterized by using method of ASTM (American Society for Testing material). The parameters measured to represent characteristic of specific grafity, flash point, viscosity, distillation, cetane index, carbon residu. The result of this research that optimum contions 25% composition with 0.8473 g/cm 3 of density, 53oC of flash point, 3.3126 cSt of viscosity, 52.3, of cetane index, 0,1601% weight of carbon residue, 0.0091% weight content of sediment, 0045% weight of the sulfur content, and 0.0575% volume of water content but all variation is still useable because it‟s meet the solar standard. Keywords: Solar, biodiesel, Ketapang Seed Oil

K136 - Study and Optimization of Phenol Adsorption using Activated Carbon from Gelam Wood(Melaleuca leucadendron Linn) Fatma, Nova Yuliasari, Elva Dwi Harmilia Jurusan Kimia Universitas Sriwijaya, [email protected]

Abstract: Phenol adsorption ability of activated carbon (AC) had been evaluated by means of optimum condition determination of adsorption process. Activated carbon was prepared from Gelam Wood (Melaleuca leucadendron Linn) using KOH activator. Optimum condition of phenol adsorption was obtained by varying contact time, AC particle size and weight and pH of solution. Phenol concentration was analyzed using Spectronic 20-D at 453 nm. Characterization of activated carbonfound its water content,ash content and adsorption ability on methylene blue are 1.56%; 9.5% and 324.66 mg/g respectively. Analysis result for phenol concentration during adsorption process gave optimum condition obtained at contact time 90 minutes, particle size 140 mesh, weight 10 g and pH 7. The calculation of adsorption efficiencyof activated carbon tested is 97.8%. Keywords: Activated carbon, phenol, Gelam wood, adsorption ability.

K137 - ANALISIS KUALITAS AIR PASCA TERJADINYA UP WELLING PADA LOKASI PEMELIHARAAN IKAN KARAMBA JARING APUNG DI DANAU MANINJAU Hamzar Suyani, Deswati and Refilda Jurusan Kimia FMIPA, Universitas Andalas Padang, 25163, [email protected]

Abstract: In upwelling events that occurred on 22 February 2016 has led to rising toxic gas from the bottom, so the fish are reared in floating net mass death. Furthermore Suyani et al (2015) says that it has developed Aquaponics can not operate optimally in recycling waste fish feed, because it has not unbalance amount Aquaponics with floating net cages. Therefore, we take samples two times, February 28, 2016 and March 19, 2016 using a depth of 1m, 5m and 15m, and the results are as follows: sampling I (D0 0-4.1 mg/L, DO5 day of 04.3 mg/L, the temperature of 28-28.3 ° C, 0-359 NTU turbidity, phosphates 13.65-15.53 mg/L, Ammonia 16.4527.3 mg/L and sulfide 1.36-1.62 mg/L) and sampling II (D0 0-4.2 mg/L, DO5 day of 0-5.1 mg/L 28.2-29.5 °C temperature, turbidity 6-1265 NTU, phosphate 2.25-2.91 mg/L, Ammonia 20.65-24.85 mg/L and sulfide 1.01 to 1.42 mg/L). Based on the above data, the water quality of Lake Maninjau after up welling is not feasible for fish farming, mainly more than10 m. Keywords: water quality, up welling, floating net cages, aquaponic

K138 - Antibacterial Biphenyls from the Bark Sonneratia caseolaris (Lythraceae) Harizon1, Betry Pujiastuti2, Dikdik Kurnia2, Dadan Sumiarsa2, Unang Supratman2, Yoshihito Shiono3 1

Program Studi Pendidikan Kimia Jurusan PMIPA FKIP Universitas Jambi, Kampus Mendalo Darat, Jalan Raya Jambi-Muara Bulian, Jambi 36361. 2Kelompok Penelitian Kimia Bahan Alam, Jurusan Kimia, Fakultas Matematika Ilmu Pengetahuan Alam, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km 21 Jatinangor-Sumedang. 3Laboratory of Natural Products Chemistry, Department of Bioresources Engineering, Faculty of Agriculture, Yamagata University, 1-23 Wakabamachi, Tsuruoka 997-8555, Japan. E-mail: [email protected]

Abstract: Mangrove plants are a group of trees and shrubs, growing along seashores in tropical and subtropical climates. These plants have special marphological characteristic and can withstand high levels of salt. Numerous mangrove plants have been used in folklore medicine and extract from mangroves and mangrove dependent species have proven activity against human, animal and plant pathogens, but only limeted investigations have

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Kumpulan Abstrak Kelompok Kimia (K) been carried out to identify the secondary metabolits responsible for their bioactivites. As part of our continuing search for antibacterial candidate compounds from Indonesia mangrove plants. Two biphenyl compounds, 1,1‟ biphenyl-3,3‟,5,5‟-tetrahydroxy-4,4‟-dimethoxy (1) and 1,1‟-biphenyl-5,2‟-dihydroxy-4‟-methoxy-2-dodecanyl ester (2), were isolated from the bark of Sonneratia caseolaris. The structure of the compounts was elucidated on the basis of spectocospic and the mass spectrometric data analysis. Using the broth microdilution method, all compound exhibited antbacterial activity against the Gram-positive bacteria Staphylococcus aureus ATCC6538 and Streptococcus mutans ATCC 25175, with minimum inhibitory concentrations ranging from 20-40; 43-65 μg/ml., respectively. Keywords: 1,1‟ biphenyl-3,3‟,5,5‟-tetrahydroxy-4,4‟-dimethoxy and 1,1‟-biphenyl-5,2‟-dihydroxy-4‟-methoxy-2dodecanyl ester, antibacterial activity, Sonneratia caseolaris, Lythraceae.

K139 - Identification of Stroid Of n-Hexane Fraction of Sponge Callyspongia sp. from The Coast of Randayan Island West Borneo Province Harlia , Ajuk Sapar, Listi Adjiyani Abstract: Randayan Island is located in West Borneo Province has coral reefs ecosystem that is habitat of sponge. The Sponges have bioactive compounds such as stetoid. In This Research, the stroid compounds group of the Callyspongia sp .from Randayan Island has been isolated. The Identfication of n-hexane fraction consisted the white needle crystals. The GC-Chromatogram showaed seven compounds, there are separated at retention time (tr) range 22.72 – 24.69. The NMR-1H spectrum (CDCl3 ,500 MHz ) revealed four chemical shift of the steroid Compounds group which are : 3.5854 ppm (s, H-C3); 5.3528 ppm (d, HO-C3 ) ; 0.6434 ppm (s, H-C18) ; 1.0064 ppm (s, H-C19). The spectra of steroid isolate marked as H-2, have similar spectras with stygmasterol compound spectras. Therefore, based on the spectrscopyc analysis, we suggest that the isolate compound are the steroid group. Keywords: Sponge , Callyspongia sp. , steroid

K140 - DEVELOPMENT OF INTERACTIVE MULTIMEDIA Macromedia Flash 8 COURSE FOR BASIC CHEMICAL MATERIAL Haryanto Faculty of Teacher Training and Education Jambi University, email: [email protected]

Abstract: Students of Mathematics and Science in studying the chemical material having trouble especially on the abstract material or material that is difficult to be exemplified as atomic structure, periodic system, chemical bonds, chemical core. Special instructional media needed to help students understand the course materials. Media that can be developed to help the learning process is media software macromedia flash 8 are interactive. The development follows the ADDIE model of the stages, Analysis, Design, Development, Implementation, and Evaluation. Design is validated by a team of media and subject matter experts as well as an assessment by faculty and small group trial. Instruments used in the form of expert validation questionnaire media and subject matter experts, questionnaire responses lecturers and students questionnaire responses. This results in the development of interactive multimedia for basic chemistry course material. Based on the validation results obtained a score of 59 media experts with good category, subject matter experts obtained a score of 64 with very good category. The assessment results faculty get a score of 63 in both categories and the results of student responses to interactive multimedia categorized very well earn a score of 65.6 with a percentage of 87.46%. Macromedia flash 8 interactive multimedia for basic chemical material is categorized as feasible as the medium of learning, either by the validation team of experts, and very interesting based on student responses. Keywords: Interactive Multimedia, Materials of Basic Chemical, Macromedia Flash 8.

K141 - DETERMINATION Saccharomyces cerevisiae FERMENTATION OPTIMUM TIME TOWARDS WATER, PROTEIN AND CRUDE FIBER CONTENTS OF FISH PELETS FROM ORGANIC WASTE Hasmalina Nasution, Febrianti Tri Nike Purnama Sari Fakultas MIPA dan Kesehatan, Universitas Muhammadiyah Riau, email: [email protected]

Abstract: Fish farming in Indonesia is one of the important components in the fisheries sector. Farmed fish requires quality feed nutritionally complete in order to live and breed well. The high price of feed can be overcome either by making homemade feed using a simple method.This study aims to determine the effect of the optimal time fermented fish pellets are made from organic waste (snails, bone catfish, banana peels and cassava peels) to the value of water content, protein and crude fiber with variation of time 0, 1, 2, 3, 4 and 5 days. The microorganisms used for fermentation is Saccharomyces cerevisiae in a state of aerobic. Analysis of water content to use the oven method and obtained optimum moisture content is time on day 2 is 9.44%. Analysis of protein content using the Kjeldahl method and obtained semimikro optimal timing of protein levels SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) on day 2 as well, namely 34.32% and crude fiber content analysis used the gravimetric method and obtained the optimum time for crude fiber content is at day 3, namely 6.38%. T-test (p = 0.05) showed no significant difference between the results of water content, protein and crude fiber obtained between 2 and 3 days of fermentation. Pellets fermented fish at the optimum time (2 days) meet the quality requirements of catfish feed ISO 7548: 2009 is the maximum moisture content of 12%, at least 25% protein and crude fiber maximum of 8%. Keywords: Pellets of fish, Saccharomyces cerevisiae, Water content, Protein, Crude fiber content

K142 - SKRINING DAN OPTIMASI PRODUKSI ENZIM AMILASE DARI BAKTERI TERMOFILIK ISOLAT SUMBER AIR PANAS TANJUNG SAKTI Heni Yohandini, Muharni, dan Novariani Sagala Fakultas MIPA Universitas Sriwijaya, Email: [email protected]

Abstrak: Mikroba termofilik telah diketahui bersifat unik berkaitan dengan kemampuannya tumbuh optimum pada suhu tinggi dan mampu menghasilkan enzim termostabil. Pada penelitian ini telah dilakukan skrining dan optimasi produksi enzim amilase dari Sumber Air Panas Tanjung Sakti Lahat. Skrining dilakukan dengan uji iodin pada media pati dan diperoleh 8isolat bakteri penghasil amilase dari 10 bakteri yang diuji. Dua isolat yang memiliki zona bening terbesar, yaitu isolat Brevibacillussp._strain_TS-07 (isolat TS7) dan Anoxybacillusrupiensis_strain_TS-04 (isolat TS4), dilakukan optimasi produksi enzim amilasenya. Waktu optimum diperoleh pada waktu inkubasi 24 jam dengan aktivitas enzim untuk isolat TS713,2 U/mL dan TS415,2U/mL. Suhu optimum untuk isolat TS7 dan TS4 yaitu 70ºC dengan aktivitas enzim 13,5U/mL dan 16,2U/mL, dan pH optimum untuk isolat TS7 dan TS4 sama yaitu pH7 dengan aktivitas enzim 15,7U/mL dan 14,8U/mL. Pertumbuhan dan produksi enzim dengan sumber karbon berbeda diperoleh paling tinggi pada penambahan galaktosa pada isolat TS7 dan penambahan glukosa pada TS4. Selain itu, pepton menjad isumber nitrogen yang dapat meningkatkan pertumbuhan dan produksi amilase untuk kedua isolat. Kata kunci: bakteri termofilik, enzim amilase, Tanjung Sakti.

K143 - DYE-SENSITIZED SOLAR CELLS USING DYE EXTRACTED FROM MALE FLOWER OF CURED BANANA (Musa x paradisiaca L.) Hermansyah Aziz11, Atika Putri Utami1and Syukri2 Photo-Electrochemistry Laboratory, 2Material Chemistry Laboratory, Chemistry Department, Mathematics and Natural Sciences Faculty, Andalas University, Padang, Email [email protected] 1

Abstract: A research on natural dye extracted from male flowers of cured banana (Musa x paradisiaca L.) as a photosensitizer in the dye-sensitized solar cells (DSSC) has been conducted. The solar cell was constructed with components consisting of working electrode ZnO, counter electrode graphite and electrolyte solution I - / I3 -. The natural dye of male flower of cured banana extract showed an absorbtion bands in the UV-Vis region of spectrum (200-700 nm) where is the maximum wavelength found at 529 nm. Parameters of the DSSC such as voltage, electriccurrent, and power based on soaking time (5, 10, 15, and 20 minutes) were measured. It was found that the soakingtime of 20 minutes was the optimum condition gave voltage of 349 mV, the current of 0.021 mA, and power of 7.329 mV. In the current vs voltage graph for the entire investigation soaking time it was found that a short circuitcurrent is generated within the range of 0.0025 to 0.02 mA whereas for open circuit range is from 155 to 332 mV. Furthermore, where is the DSSC was soaked in 5 minutes gave the higher number of fill factor (FF) but the highest efficiency was observed from one which was soaked in 20 minutes. Keywords: Male flowers of cured banana, DSSC, Natural dye, FF, Soaking time

K144 - PERBANDINGAN METODE DPPH DAN FRAP MODIFIKASI PADA PENENTUAN KANDUNGAN ANTIOKSIDAN TOTAL DALAM SAMPEL BIT Indrawati, Yefrida, and Nanda Siti Hamzaini Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas Padang, Email : [email protected]

Abstract: Study of comparison methods on determination of total antioxidant content using DPPH and modified FRAP methods on beet has been done. This study aims to determine whether the two methods can be used to determine the total antioxidant content calculated as ascorbic acid in the sample. Total antioxidant content in beets by using DPPH and modified Frap methods respectively 21.0453; 15.6628 mg / g. Statistical parameters for the validation include are precision and correlation coefficient LoD and LoQ % recovery and Hortzwiz ratio. Statistical parameters obtained for DPPH and modified FRAP methods of beet, SDR 2.39 ; 0.63%, r = 0.9905 and 0.9896, the LoD 1.41 mg / L and 1.46 mg / L , LoQ 4.71 mg / L and 4.89 mg / L, % recovery 92.43% and 96.523%. HORRAT ratio 1.23 and 0,3. Keywords: antioxidants, validation methods, DPPH, FRAP, FRAP modified. 44



K145 - Dinamika Residu β-Siflutrin pada Lahan Kangkung (Ipomoea reptans) Ismarti FKIP Universitas Riau Kepulauan

Abstract: β-cyfluthrin(3(3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid cyano - (4-fluoro-3phenoxyphenil)-methyl ester) insecticide has been in agricultural use in the recent years for controlling Lepidopteran pest affecting leafy vegetables crops. The extensive use of synthetic pyrethroids like β-cyfluthrin has resulted in wide spread environmental contamination. A study on residue dynamic of β-cyfluthrin applied to kangkong-land has been conducted. Buldock 25 EC with maximum recommended dose was used. The analysis was performed on kangkong and its land while land without kangkong used as control. Extraction was carried out with the soxhlet method, while the cleaning up process was carried out with carbon-and-florisil-doublelayered column. High resolution gas chromatography with Electron Capture Detector (ECD) was used to determine the concentration. On kangkong and kangkong-land with 14,52% organic matter, sorption of βcyfluthrin was observed. Residue of β-cyfluhtrin on kangkong and its land increased to 16th days. The dissipation rate on land without kangkong and kangkong-land are fast with dissipation rate 2,5 x 10-1 day-1 and 5,76 x10-1 day-1 respectively. On kangkong dissipation rate is 3,3x10-2 day-1. Organic matter and moisture play an important role in the dissipation rate of β-cyfluthrin residue in the tropical farmland of Indonesia. Keywords: pyrethroid, dissipation rate, Buldock 25EC, contamination

K146 - A LABDANE-TYPE DITERPENOID: AN ANTIBACTERIAL COMPOUND FROM VITEX PUBESCENSV Vahl. STEM BARK Lenny Anwar1), Sanusi Ibrahim2) , Mai Efdi 2), and Deddi Prima Putra3) 1

Faculty of Teaching and Educational Sciences, University of Riau/ Postgraduate Student of Andalas University, email: [email protected]. 2Faculty of Mathematics and Natural Sciences, Andalas University, email: uci_ciliang @yahoo.com / [email protected]. 3Faculty of Pharmacy, Andalas University, email: putra_aries @yahoo.com

Abstract: A labdane-type diterpenoid: andrographolide has been isolated for the first time fromVitex pubescens Vahl. (Verbenaceae) stem bark. In this study, we analyzed antibacterial effect of andrographolide against grampositive bacteria, Bacillus subtilis, Staphylococcus aureus and gram-negative bacteria, Escherichia coli, Pseudomonas aeruginosa, by using Resazurin Microtiter Assay (REMA) method. Andrographolide showed high antibacterial activity against Escherichia Coli and Staphylococcus aureus with the minimum inhibitory concentration (MIC) 1.9531 µg/mL that approached Cepradoxil MIC value (0.1953 µg/mL) used as a positive control. Keywords: Andrographolide, antibacterial activity, Vitex pubescens Vahl.

K147 - PREPARATION OF CRYPTOMELANE NANOMATERIALS USING MICROWAVE AND OVEN PROCESS Lia Anggresani Bachelor of Science in Chemistry Faculty of Mathematic and NaturalScienceUniversity of Andalas Advised by Dr. Syukri Arief and Rahmayeni, MS

Abstract: Preparation of crytomelane nanomaterials using microwave and oven process has been investigated. The reaction process used kalium permanganate as precursor, H 2O2 as redactor, HCl and Buffer Sitrat-Fosfat as the acidity controller. Powder could be prepared by heating of mixture in microwave about 10 minutes or oven about 6 hours at 140-160oC. The product was found in the darkbrown powder. Powder washed by water several times then dried in oven at 95-105oC. The characterization of powder by X-Ray Diffraction (XRD) showed that the product of manganese oxide using microwave and oven was found criptomelane with simple formula of K0,5Mn2O4.1,5 H2O. Scanning Electron Microscopy (SEM) images showed that the morfology of powder were spherical (using HCl microwave and oven) and bulk (using Buffer Sitrat-Fosfat microwave and oven).

K148 - EFFICIENCY COMBINATION METHOD OF GREASE TRAP AND MULTI SOIL LAYERING (MSL) FOR DECREASING OF TSS, BOD, COD, OIL & GREASE CONCENTRATION IN RESTAURANT WASTEWATER Lidya Novita, Refilda Suhaili, Rahmiana Zein) Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Andalas, email: [email protected]

Abstract: Restaurant wastewater treatment with combination method of Grease Trap and Multi Soil Layering (MSL) has been studied. The aimed of this research are to using some material has in the our environment for removal of TSS, BOD, COD, oil and grease from restaurant wastewater. The grease trap made of Poly Vinyl Chloride (PVC) has dimensions of 45x25x35cm. MSL system in the form of an acrylic box has dimensions of SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) 50x15x50cm. MSL containing permeable layers (PL) and soil mixture layers (SML). PL consist of a zeolite 3-5 mm particle size. SML consist of volcanic soil, coconut shell charcoal, iron powder and corn cob powder with a ratio of 75:10:10:5 in weigth with molds resembling brick wrapped in burlap. PL and SML were arranged in an acrylic box like the brick in the building. Variations of the wastewater flow rate in the system were 25, 50, 75, 100 mL/min with two processes aeration and non-aeration. Grease trap could decreasing levels of TSS, BOD, COD, oil and grease while the pH of restaurant wastewater increased. The highest efficiency of grease trap was at a flow rate of 25 mL/min for TSS, BOD, COD, oil and grease were equal to 45.45%, 46.30%, 60%, 95.40% respectively. Variation of the flow rate of 25-100 mL/min at MSL system provided high efficiency for TSS 90.91%95.45%, BOD 90.73%-97.40%, COD 88%-96% (100 ml/min – 25 ml/min), oil & grease 100%, for both process MSL aeration and non-aeration. Combination method of grease trap and MSL was effective in removal of TSS, BOD, COD, oil and grease in restaurant wastewater. Keywords: Combination Method, MSL, Grease Trap, Restaurant Wastewater

K149 - IDENTIFIKASI DAN PENETAPAN KADAR METIL PARABEN DALAM SEDIAAN KRIM PEMUTIH YANG BEREDAR DI KOTA JAMBI MENGGUNAKAN METODA HPLC Lili Andriani, Rahmadevi, Jayanti Marta Sari Program StudiFarmasi, Stikes Harapan Ibu Jambi; email: [email protected]

Abstract: Methyl paraben is a kind of preservative of whitening cream. If quantitative of methyl paraben excess from 0.4% caused cancer. The aim of this research were identification and determination quantitative of methyl paraben at whitening cream in Jambi city using HPLC method. This method using reversed phase column (C-18) as stationary phase and mobile phase methanol:water (60:40) v/v. Flow rate of 1 mL/min, detection at 254 nm, use UV detector. The qualitative result showed five samples containing methyl paraben detected by arise peak at same retention time, if compared with standard 3 minute. Recovery of methyl paraben in the whitening cream was between 0.1% to 0.39%. Keywords: methyl paraben, whitening cream, HPLC

K150 - ISOLASI DAN KARAKTERISASI STRUKTUR TRITERPENOID DARI DAUN Aglaia odorata Lour Mai Efdi, Syafrizayanti, Adlis Santoni, Diny Dwi Dharma FMIPA, Universitas Andalas, Kampus Limau Manis Padang 25613; Email: [email protected]

Abstract: Aglaia odorata Lis one of the folk medicinal plant belong to Meliaceae family which is distributed in the tropical rain forest of South Asia. Isolation and characterization of triterpenoid from ethyl acetate fraction of Aglaia odorata L leaves has been done. The triterpenoid compound was isolated by maceration, column chromatography methods and characterization by using spectroscopic methods.Based on UV, FT-IR and NMR data, the isolated compound was suggested as Dammar-20-ene-3b,24,25-triol. Keywords: Aglaia odorata L, dammar-20-ene-3b,24,25-triol, Meliaceae

K151 - Antifungal Activity and Stability of Combination the Water Extract of Mangosteen Fruit Hull (Garcinia Mangostana. L) and Secang Wood (Caesalpinia Sappan. L) Miksusanti Jurusan Kimia FMIPA UNSRI; [email protected]

Abstract: The investigation of antifungal activity and stability of combination the water extract of mangosteen fruit hull (Garcinia Mangostana. L) and secang wood (Caesalpinia Sappan. L) has been conducted. The tested demartophyta used Candida albicans. This research using difusion methodto determine the antifungal activity and the stability of dye combination was tested against oxidizing agent (H2O2), light (UV), heating temperature and diffrent storage condition. The results ofdetermination minimum inhibitory concentration(MIC) showed thatthe water extract of fruit hull of mangosteen and secang wood are 3,9 mg/ml and 0,97 mg/ml. MIC combination of extract mangosteen fruit hull with secang woodrespectively, 1,95 mg/ml : 0,24 mg/ml; 0,97mg/ml: 0,48 mg/ml; 0,48 mg/ml : 0,97 mg/ml and 0,24 mg/ml : 0,97 mg/ml. The determination for zone inhibition showed that combination of two extract is the larger than the single extract fruit hull of mangosteen and smaller than single extract secang wood. The research showed that the added oxidator (H2O2 1%) made absorbance get lower 81,69% after 15 days. The impact of the UV light (25 watt) after 7 days showed that the colour intensity change at the dark store (72,51%) higer than transparent store (65,76%). Color intensity at the diffrent storage condition after 7 days showed that at room temperature (77,17%) higher than refrigator temperature (67, 07%). The heated at 100oC for 120 minute showed the higher change of colour intensity (37,80%) Keywords: mangsteen of fruit hull, secang wood, antifungal and dye stability

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K152 - SINTESIS BASA SCHIFF DARI HASIL KONDENSASISINAMALDEHIDA DENGAN ETILENDIAMIN DAN FENILHIDRAZIN SERTA PEMANFAATANNYA SEBAGAIINHIBITOR KOROSI PADA LOGAM SENG Mimpin Ginting, Herlince Sihotang, Roympus Manalu, Departemen Kimia FMIPA USU, Jl. Bioteknologi No.01 Kampus USU Medan, [email protected]

Abstrak: Telah dilakukan sintesis Basa Schiff melalui reaksi kondensasi sinamaldehida dengan dua sumber amina primer yaitu etilendiamina dan fenil hidrazin. Kondensasi sinamaldehida dengan etilendiamida dilakukan melalui cara refluks dalam pelarut etanol selama 5 jam untuk menghasilkan Basa Schiff I, sedangkan dengan fenilhidrazin juga dilakukan secara refluks dalam pelarut etanol selama 1 jam untuk menghasilkan Basa Schiff II. Dari 13,2 gram silamaldehida yang dikondensasikan dengan 2,4 gram etilendiamina dihasilkan 8,40 gram(72,91%) Basa Schiff I selanjutnya hasil analisis spektroskopi FT-IR menunjukkan adanya uluran C=N pada puncak spektrum daerah bilangan gelombang 1627 cm-1. Reaksi lainnya sebanyak 13,2 gram sinamaldehida yang dikondensasikan dengan 5,4 gram fenilhidrazin dihasilkan 9,54 gram (85,94%) Basa Schiff II yang selanjutnya hasil analisis spektroskopi FT-IR menunjukkan adanya uluran C=N pada puncak spektrum daerah bilangan gelombang 15977 cm-1. Hasil analisis spektroskopi UV-Vis memberikan pita serapan pada daerah panjang gelombang 403 nm untuk Basa Schiff I dan 360 nm untuk basa Schiff II. Hasil Pengujian efisiensi inhibitor korosi terhadap logam seng dalam media HCl 0,1N memberikan nilai efisiensi inhibitor untuk Basa Schiff I pada konsentrasi 7000 ppm yaitu sebesar 90,17 %. Sedangkan untuk sinamaldehida, etilendiamna fenilhidrazin dan Basa Schiff II berturu-turut sebesar 58,5%, 50,04%, 35,01% dan 78,47%. Kata kunci: Sinamaldehida, etilenamin, fenilhidrazin, kondensasi, BasaSchiff, Inhibitor korosi

K153 - Standardization of Extracts Ethyl Acetate Endophytic fungus Aspergillus sp of Kunyit Putih (Curcuma zeodaria) Muhami* and Heni Yohandini Department of Chemistry, Faculty of Mathematics and Natural Sciences , Sriwijaya University, Jl. Raya Palembang Prabumulih Km 32, Indralaya, Ogan Ilir, South Sumatera, Indonesia,30662, '[email protected]

Abstract: The use of a material which has a biological activity must meet quality standards before being used as a drug substance. Ethyl acetate extracts of Aspergillus sp endophytic fungus from plants Curcuma zeodaria showing as antibakhteri active invitro and invivo. It is necessary for the standardization of the quality of the material. Standardization of the test conducted on the drying shrinkage, specific gravity, moisture content, ash content, heavy metal contamination, microbial contamination, organoleptic and chemical content testing the ethyl acetate extract. The results obtained were compared with the standards established by the Indonesian National Standard Tests performed by standard methods. The measurement results show extracts of the ethyl acetate extract of the endophytic fungus Aspergillus sp indicates values are still below themaximum specified standard Indonesian National Standard. Based on these data, we conclude the ethyl acetate extract endophytic fungus Aspergillus sp from Curcuma zeodaria can be used as a standardized extract. Keywords: Aspergillus sp, Curcuma zeodaria, endophytic microbes, standardization extract

K154 - Taraxerone dari Kulit Batang Matoa (Pometia pinnata, Forst & Forst) dan Aktifitas Sitotoksik terhadap Sel Murin Leukimia P388 Neni Trimedona1, Hazli Nurdin2, Djaswir Darwis2, Mai Efdi2 1

Mahasiswa Pascasarjana Jurusan Kimia Universitas Andalas/ Politeknik Pertanian Negeri Payakumbuh. 2Jurusan Kimia Universitas Andalas, [email protected]

Abstrak: Senyawa triterpenoid pentasiklik yang diidentifikasi sebagai taraxerone telah diisolasi dari ekstrak nheksana kulit batang matoa. Pengujian sifat toksik dari ekstrak dan senyawa dilakukan dengan metode Brine Shrimp Lethality Test (BSLT) yang dilanjutkan dengan evaluasi sitotoksisitas senyawa taraxerone terhadap sel murin leukemia P388 dengan metode MTT (Microculture Tetrazolium Technique). Hasil pengujian menunjukan bahwa ekstrak n-heksana dan taraxerone bersifat sangat toksik terhadap larva udang Artemia salina dengan nilai LC50 sebesar 33,10 µg/mL dan 20,10 µg/mL, namun senyawa taraxerone bersifat tidak aktif terhadap sel murin leukemia P388 karena memiliki nilai IC50 121,83 µg/mL. Kata kunci: Aktifitas sitotoksik, matoa, sel murin leukemia P388, nilai LC50 dan IC50

K155 - Karakterisasi Senyawa β-Amyrin palmitat dari Buah Ficus aurata (Miq.) Miq. Serta Pengujian Aktifitas Antibakteri Nurhamidaha)*, Hazli Nurdinb), Yunazar Manjangb), Abdi Dharmab) dan Suryatib) a)

Jurusan PMIPA, FKIP, Universitas Bengkulu, Bengkulu/Mahasiswa Pascasarjana FMIPA Universitas Andalas. b)Jurusan Kimia, FMIPA, Universitas Andalas, Padang, E. Mail: [email protected]


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Kumpulan Abstrak Kelompok Kimia (K) Abstrak: Tumbuhan Ficus aurata (Miq.) Miq. merupakan salah satu spesies genus Ficus dari famili Moraceae yang banyak ditemukan di daerah Sumatera Barat, Indonesia. Dari studi literatur, belum ditemukan laporan kandungan senyawa metabolit sekunder dari spesies ini maupun bioaktifitasnya. Penelitian ini bertujuan untuk mengisolasi dan mengkarakterisasi senyawa metabolit sekunder dari buah Ficus aurata (Miq.) Miq. dan menguji aktifitas antibakterinya menggunakan dua bakteri uji gram negatif (Escherichia coli dan Pseudomonas aeruginosa) dan dua bakteri uji gram positif (Staphylococcus aureus dan Bacillus Subtillis). Ekstraksi dilakukan secara maserasi dengan pelarut heksan, lalu diuji aktifitas antibakteri. Selanjutnya dilakukan isolasi terhadap ekstrak heksan dengan teknik kromatografi kolom grafitasi menggunakan eluen heksan, heksan:etil asetat. Hasil isolasi dari ekstrak heksan dikarakterisasi menggunakan spektroskopi Infra merah (IR) dan spektroskopi Resonansi Magnet Inti (NMR), dan diperoleh satu senyawa β-amyrin palmitat yang baru ditemukan dalam genus Ficus. Pengujian aktifitas antibakteri terhadap senyawa ini, memperlihatkan senyawa β-amyrin palmitat berpotensi digunakan sebagaia senyawa antibakteri dengan nilai KHM 0,625 µg/mL terhadap bakteri uji Escherichia coli dan Staphylococcus aureus dan nilai KHM kontrol positif cefadroxil 0,1563 µg/mL untuk semua bakteri uji. Kata kunci: buah Ficus aurata (Miq.)Miq, isolasi, elusidasi struktur, bioaktifitas.

K156 - EFEKTIFITAS BERBAGAI METODE SUPLEMENTASI PIRIDOKSIN MENGOPTIMALISASI PRODUKSI IMMUNOGLOBULIN Y (IgY) KUNING TELUR AYAM Pasar Maulim Silitonga1* dan Melva Silitonga2 1 2

Jurusan Kimia FMIPA Unimed, Jl. Willem Iskandar Psr V Medan, Sumatera Utara 20221, email: [email protected]. Jurusan Biologi FMIPA Unimed, Jl. Willem Iskandar Psr V Medan, Sumatera Utara 20221

Abstrak: Penelitian ini bertujuan untuk menemukan metode suplementasi piridoksin yang paling efektip dan efisien dalam mengoptimalkan produksi immunoglobulin Y (IgY) kuning telur. Digunakan 12 ekor ayam betina dewasa (jenis Isa brown) siap bertelur yang dibagi menjadi tiga kelompok dan diberi perlakuan suplementasi piridoksin dosis 3 mg/kg ransum dengan metode yang bervariasi yaitu via air minum (S1), mencampurkannya dalam ransum (S2) dan via suntikan intramuscular (S3). Selama percobaan, semua ayam diberi air minum secara ad libitum dan ransum komersil standar yang telah mengandung piridoksin dengan dosis normal. Semua ayam diimunisasi empat kali dengan antigen toksoid tetanus . Sampel telur diambil setelah 4 minggu injeksi antigen toksoid terakhir. Uji spesifitas IgY secara kualitatif dilakukan dengan uji AGP, purifikasi IgY dengan FPLC, penentuan kadar IgY dengan metode Bradford. Hasil penelitian menunjukkan bahwa tidak ada perbedaan yang signifikan kadar IgY kuning telur ayam yang diberi suplementasi piridoksin via air minum, dicampur dalam ransum maupun via suntikan intravena, dengan demikian diisimpulkan bahwa suplementasi piridoksin via air minum merupakan metode yang paling efektip dan efisien dalam mengoptimalkan produksi IgY kuning telur. Dengan metode ini diperoleh rataan kadar IgY kuning telur sebesar 2,151 ±0,026 gr/100mL setara dengan 107,55 mg/ butir telur Kata kunci: Piridoksin, IgY, Immunoglobulin

K157 - THE EFFECT OF pH ON SYNTHESIS OF HYDROXYAPATITE FROM GELOINA COAXANS SHELL Pepi Helza Yanti Department of Chemistry-FMIPA-Universitas Riau, Kampus Bina Widya Jl. HR. Soebrantas 12,5 KM Panam, [email protected]

Abstract: The effect of pH on synthesis of hydroxyapatite from Geloina coaxans shell has been done by precipitation method. Geloina coaxans shells and several phosphate sources (NH4)2 HPO4and H3PO4 were used as precursors on synthesis of HAp. Synthesis of HAp was done with molar ratio of precursors 1,67 and pH of solution were varied at 10, 12, 13, and 14. The result proved that nano-HAp can be obtained successfully and shown that pH value was a significant parameter variable on synthesisHAp that can influence crystalinity and purity of HAp. Using Schererr equation, particle size of HAp powder of (NH4)2HPO4 was 26,69 while H3PO4 was 40 nm respectively. Keywords: Geloina coaxans, HAp, (NH4)2HPO4and H3PO4

K158 - PREPARATION OF METHYL ESTER SULFONATE FROM KETAPANG SEED OIL METHYL ESTER AS SURFACTANT Poedji Loekitowati Hariani*), Fahma Riyanti, and Ahyati Fadilah Faculty of Mathematics and Natural Science, Sriwijaya University, Email*): [email protected]

Abstract: The aim of the present work was to Preparation of Methyl Ester Sulfonate From Ketapang Seed Oil Methyl Ester As Surfactant. The research is to determine the optimum condition synthesis of methyl ester sulfonate surfactant with reaction time variations (3.5; 4.0; 4.5; 5.0; 5.5 hours) and to identify methyl ester sulfonate by using FT-IR spectroscopy. The methyl ester from ketapang seed oil were anaysize by GC-Msshowed 48


Kumpulan Abstrak Kelompok Kimia (K) methyl ester containing of methyl palmitoleic,methyl linoleic, methyl palmitate, methyl stearate, methyl oleic, methyl palmitolenat and methyl eicosenoate. The spectra of sulfonate group is indicated by shifting of wave number at 1118.71cm-1 until 1029.1 cm-1. The optimum condition of methyl ester sulfonate at reaction time 4.5 hours in the amount of 40 mL/300 g ketapang seed. The characteristics of methyl ester sulfonate showed that at the optimum reaction time 4.5 hours with emulsion stability 71.684%, density 0.8714 g/mL, surface tension 36.232 dyne/cm, and maximum absorbance 1.428 at the maximum wavelength 660 nm. Keywords: Surfactant, methyl ester sulfonate, surface tension, ketapang seed oil

K159 - Sifat Mekanik Komposit NR/HDPE Diperkuat Pengisi Sekam Padi Termodifikasi LENR Rahmadini Syafri Program Studi Kimia, Fakultas MIPA dan Kesehatan, Universitas Muhammadiyah Riau, Jln. Tuanku Tambusai Ujung, Pekanbaru, 28294. Telp/Fax (0761) 839577

Abstrak: Modifikasi permukaan sekam padi (SP) dengan pre-treatmentalkali (larutan NaOH 5% w/v) telah dijalankan untuk melihat pengaruh pre-treatment permukaan SP terhadap interaksi permukaan antara serabut dan getah. Modifikasi permukaan SP dilanjutkan dengan pelapisan Liquid Epoxidised Natural Rubber (LENR) pada tiga konsentrasi yang berbeda yaitu 5%, 10% dan 20% w/w LENR dalam larutan toluena. Morfologi antaramuka dan reaksi kimia antara SP dan LENR diamati melalui analisis Fourier Transform Infra Red (FTIR)dan Scanning Electron Microscope(SEM). Didapati bahwa larutan LENR 10% memberikan interaksi yang optimum antara serabut (SP) dan getah (LENR). Adunan matriks dan komposit disediakan dari 60% Natural Rubber(NR), 40% High Density polyethylene(HDPE) diperkuat dengan pengisi Sekam Padi (SP) diadunkan dengan menggunakan Internal Mixer (Brabender Plasticoder). Hasil analisis menunjukkan bahwa pre-treatment SP dengan larutan NaOH 5% dilanjutkan dengan pelapisan LENR 10% memberikan interaksi maksimum antara pengisi dan matriks seterusnya meningkatkan sifat mekanik komposit. Kata kunci: natural rubber, high density polyethylene, liquid epoxidised natural rubber, sekam padi, natrium hidroksida

K160 - THE INQUIRY BASED LEARNING DEVELOPMENT IN TEACHING OF REACTION RATES TO INCREASE STUDENT COMPETENCY Rahmat Nauli*) dan Ani Sutiani Chemistry Department, Faculty of Mathematicsand Natural Science, State University of Medan, Email1*) : [email protected]

Abstract: The Inquiry based learning development was needed to increase learning based student activity, meaningful learningand increase motivation in order to increase student competency. The research aim is to product of an innovative teaching of Reaction Rates in General Chemistry. The research kind is research and development that conducted on regular Biology Class and bilingual physic class, FMIPA State University of Medan. The steps of the research is to develop subject of reaction rates, grilles and inquiry-based learning plans, developed a concept map media on inquiry learning model for improving learning activities, and the implementation inquiry model combine with concept map media for improving student learning outcomes in subject of reaction rates. The research development output is document of Subject matter based on inquiry, Subject grille and competency, teaching reaction rates based on inquiry with media, that built critical thinking skill, problem solving ability and student creativity. The research data shows that guided inquiry based learning can improve the learning outcomes of students in each group of students with the ability relatively high, medium or low, both in the regular Biology class and bilingual Physics class. Keywords: Inquiry based learning,Student competency, Reaction Rates

K161 - ANTIBACTERIAL, ANTIFUNGAL AND ANTIDIABETIC ACTIVITIES OF Dimocarpus longan FRUIT SKIN EXTRACT Rahmiwati Hilma1), Siti Mukhlisa1), Haiyul Fadli2) 1

Program Studi Kimia, FMIPA dan Kesehatan, Universitas Muhammadiyah Riau, email: [email protected]. 2Sekolah Tinggi Farmasi Riau

Abstract: Dimocarpus longan is one of the plant widely cultivated in Indonesia to utilize fruit, but skin of longan fruit had only ended up in the trash. Part of the people have taken advantage of longan skin as urination problem, worms problem, the eyes nourish, blood sugar problem, treat headaches, fluor albus problem and hernia. The purpose of this research to identify the active compound, antibacterial activity, antifungal activity and antidiabetic activity of D. longan fruit skin extract. Antibacterial and antifungal activity test was conducted by diffusion methode. Antidiabetic activity test was in vitro model of ihhibitory activity agains α-glucosidase. The test Results of compound contained are flavonoid, fenolik, saponin, terpenoid dan alkaloid. Antibakterial test showed that n-hexane extract, ethyl acetate extract and methanol extract of D. longan fruit skin did not show SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) any antibacterial activity against S. aureus and E. coli. Antifungal test showed that n-hexane extract of D.longan fruit skin has antifungal activity of C. albicans with minimum inhibitory concentration (MIC) value of 11,19 mm at 50 ppm. Antidiabetic activity test showed inhibitory activity. Metanol exstract with IC 50 value of 297,21 ppm and etil asetat exstract with IC 50 value of 305,55 ppm. Keywords: Dimocarpus longan, Antibacterial, antifungal, antidiabetic, α-glucosidase inhibition

K162 - AKTIVITAS FREE RADICAL SCAVENGER (FRS) MINYAK ATSIRI BUNGA KENANGA (Cananga odorata) Rurini Retnowati1*, Unggul P. Juswono2, Ranny Cahya Rachmawati1 1

Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya, [email protected], [email protected]. 2Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya

Abstrak: Minyak atsiri kenanga banyak digunakan dalam industri flavor, parfum, kosmetika, farmasi, sabun, aromaterapi dan spa. Secara struktur komponen penyusunnya mempunyai potensi sebagai antiradikal. Penelitian ini bertujuan untuk mengisolasi dan mengkarakterisasi minyak atsiri kenanga (Cananga odorata), serta menguji aktivitas antiradikal sebagai Free Radical Scavenger (FRS). Isolasi minyak atsiri kenanga dilakukan dengan metode distilasi uap selama 8 jam, sedangkan karakterisasinya ditentukan berdasarkan sifat fisik yaitu warna, bau, indeks bias dan berat jenis. Analisa komponen minyak atsiri kenanga dilakukan menggunakan Kromatografi Gas Spektroskopi Massa (KG-SM). Uji aktivitas minyak atsiri kenanga sebagai FRS dilakukan terhadap radikal bebas dalam minyak jagung yang diradiasi sinar UV pada λ= 254 nm selama 40 menit. Aktivitas FRS ditentukan dengan Electron Spin Resonance (ESR) pada waktu reaksi 2, 3, 4, 5, dan 6 menit. Hasil isolasi menunjukkan bahawa minyak atsiri kenanga yang diperoleh berwarna kuning muda dan berbau segar khas kenanga dengan rendemen sebesar 1,066 %, indeks bias 1,49367, berat jenis 0,9154 g/mL. Hasil analisa dengan KG-SM menunjukkan adanya 24 komponen dalam minyak atsiri kenanga dengan komponen utama β-kariofilen (19,39 %), germakren-D (13,36 %), linalool (11,28 %) dan α-humulen (9,46 %). Minyak atsiri kenanga mempunyai aktivitas optimal sebagai FRS pada radikal hidroksil saat waktu reaksi 4 menit dan optimal sebagai FRS pada radikal alkil dan peroksil saat waktu reaksi 5 menit. Senyawa yang diduga berkontribusi dalam memperangkap radikal adalah senyawa benzil benzoat dan p-metilanisol.

Kata kunci: Cananga odorata, minyak atsiri kenanga, KG-SM, Free Radical Scavenger (FRS), ESR

K163 - HEAVIES METAL OBSTETRIC DETERMINATION IN CIBANJARAN PASCA'S RIVER WATER ERUPTION LOCKS-UP GALUNGGUNG TASIKMALAYA IS WESTERN JAVA Rusvirman Muchtar, Eyka Yuditia Saferia, Sukrido Mathematics and Natural Sciences faculty, Achmad Yani's General university, email: ir.muctar@gmail. com

Abstract: Was done research about heavy metal content determination in Cibanjaran Pasca's river water eruption locks-up Galunggung Tasikmalaya. Step morphologicaling to cover qualitative analysis utilizes reagen specific and quantitative analysis utilizes Sprektrofotometer Atom uptake (SSA). Qualitative analysis result gotten by merkuri's metal (Hg), chromium (Cr), cadmium (CD), with quantitatives analysis terminological rate in a row 0,1634 - 0,3268 ppb, 0,0431 0,0641 ppm, 0,0110 – 0,0331 ppm. Analysis of metal third that still lies under bounds floats to terminological PP No. 82 Years 2001. Keywords: An river Cibanjaran, kualititif's analysis (reagen is specific) and quantitative (SSA).

K164 - Pengembangan Adsorben Dari Limbah Activated Sludge Industri Karet Remah Untuk Mereduksi Zn (II) Salmariza. Sy1), Intan Lestari 2), Desy Kurniawati2), Harmiwati 4), Hermansyah Aziz 2), Zulkarnain Chaidir3) and Rahmiana Zein 5) 1

Balai Riset dan Standardisasi Industri Padang, Padang. 2Jurusan Kimia FMIPA, Universitas Jambi, Jambi, 3Jurusan Kimia FMIPA, Universitas Negeri Padang, Padang. 4Jurusan Teknik Kimia, Politeknik ATI Padang, *e-mail: [email protected]

Abstract: Development adsorbent from waste activated sludge of crumb rubber industry by soaking in HNO3 as post treatment for Zn ion reduction was performed in batch system. The main parameters in the adsorption process such as the agitation time, metal ion concentration, adsorbent dosage and solution pH were studied in order to know the optimum condition and adsorption ability of the adsorbent.The FTIR, XRF and SEM-EDS analysis were conducted in order to characterize the adsorbent. The results showed that the equilibrium adsorption of Zn(II) was well described by the Langmuir model. According to this model, the maximum adsorption capacity was found to be 16.1 mg/g. As the sludge is discarded as waste from wastewater treatment processing, the adsorbent derived from waste activated sludge of crumb rubber industry is expected to be an economical product for metal ion remediation from water and wastewater. Keywords: crumb rubber industry, waste activated sludge, adsorbent, adsorption, Zn 50



K165 - THE COMBINATION OF TAPIOCA AND TOFU DREGS AS SUBSTRATE IN PRODUCING YEAST FROM ISOLATE OF HIBISCUS LEAF Samuel Herianto, Surya Lesmana, Firman Sebayang, and Emma Zaidar Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, email: [email protected]

Abstract: The combination of tapioca dregs as source of carbon and tofu dregs as source of nitrogen had a strong foundation as a substrate to support the activity of Rhizopus sp. Therefore, this study needed to be done in order to know the characteristics of yeast resulting from the isolate of hibiscus leaf (Hibiscus tiliaceus) and the best combination of the substrate between tapioca dregs and tofu dregs (TAD:TOD). In this study, Rhizopus sp. was isolated from hibiscus leaf by PDA to obtain pure culture. Pure culture of Rhizopus sp. was suspended in a medium PDB. That suspension was planted in combination of substrate(100% TAD, 3:1, 2:1, 1:1, 1:2, 1:3 and 100% TOD). That combination was inoculated by a pure culture suspension at 30°C, for 3 days and then dried at 37-40ºC for 24 hours and milled. Yeast was measured the number of spores, TPC and moisture content. The result shows that the best combination is 3:1 with the number of spores 3.75 x 108 spores/g, TPC 3.75 x 107 CFU/gand water content 4.15%. Keywords: Combination, substrate, Rhizopus sp., yeast

K166 - PUPUK Fe LEPAS LAMBAT DARI LUMPUR SIDOARJO (KAJIAN KADAR ZEOLIT DAN KONSENTRASI ASAM ASETAT) Sri Wardhani, Maryam Putri Eradewi, Rachmat Triandi Tjahjanto FMIPA Universitas Brawijaya, email: [email protected]

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh penambahn zeolite dan konsentrasi asam asetat dalam pembuatan pupuk Fe lepas lambat terhadap kemampuan pelepasan Fe.pupuk Fe dibuat dengan cara mengekstraksi lumpur lapindo dengan NaOH 3M panas. Filtrat hasil ekstraksi diukur kadar Fe dengan spektrofotometer uv-vis. Filtrate hasul ekstraksi diempregnasikan dalam zeolite aktivasi asam sebanyak 1, 2, 5, 10, dan 15 gram. Zeolit-Fe dikalsinasi selama 4 jam pada temperature 500oC dan diembankan dalam kitosan yang dibuat gel dengan asam asetat 0,5; 1,0; 1,5; 2% untuk membuat granul zeolite-Fe-kitosan. Pupuk yang diperoleh diuji pelepoasan Fe dalam air dengan menggunakan metode perendaman dan pengadukan. Hasil penelitian menunjukkan bahwa pelepasan Fe pada penambahan zeolite 15 g adalah yang paling lambat. Kadar Fe yang terlepas sebanyak 0,369mg/L setiap jamnya per 1 gram pupuk. Asam asetat 1% menyebabkan granul mudah dibentuk dan melepaskan Fe paling sedikit 0,370 mg/L setiap jamnya per gram pupuk. Kata kunci: zeolite, pupuk lepas lambat, lumpur Sidoarjo, kitosan, asam asetat

K167 - STUDY OF MANGOSTEEN RINDAS RAW MATERIALS IN PRODUCING BIOETHANOL USING HYDROLYSIS AND FERMENTATION METHODS Surya Lesmana1), Samuel Herianto1), Rosmery Tobing2) and Firman Sebayang1) 1)

Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, email: [email protected]. 3)Major in Chemical Engineering, PTKI Medan, email: [email protected]

Abstract: Study of mangosteen rind as raw material for bioethanol had been done. The carbohydrate content of mangosteen rind reached 82.50% (Ministry of Agriculture 2010). Carbohydrates could be converted as bioethanol through hydrolysis and fermentation methods. The purpose of this study was to determine the characteristics of bioethanol produced from mangosteen rind with varying concentrations of yeast and compare them with the characteristics of bioethanol in the Indonesian National Standard (SNI). This research is an experimental laboratory that is divided into several stages, such as raw material preparation, carbohydrate hydrolysis, fermentation and purification of bioethanol by distillation. Hydrolysis included glucose test with Fehling's solution (A and B). The result of hydrolysis was fermented for 5 days to produce bioethanol by using yeast Shaccaromyces cerevisieae by varying the concentration 0.75%; 1.00%; 1,25%; 1.50%. The result shows that the mangosteen rind has great potential to produce bioethanol and bioethanol characteristics (yeast 1.00%) is the density (0.9748 ml / g), refractive index (1.34762) and the concentration of ethanol (40.9943%). Keywords: Mangosteen, yeast, ethanol, hydrolysis and fermentation

K168 - NATURAL ACEH BENTONITE AND DERIVED TiO2 BENTONITE USED FOR PHOTOCATALYTIC DEGRADATION OF INDIGO CARMINE Surya Lubis*, Sheilatina and Vicky Praja Putra Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala, Darussalam Banda Aceh 23111, email: [email protected]


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Kumpulan Abstrak Kelompok Kimia (K) Abstract: The modification of natural bentonite from Kuala Dewa, North Aceh into titania pillared bentonite (TiO2-bentonite) and its photocatalytic activity on degradation of indigo carmine dye has been conducted. Natural bentonite was modified by cation exchange into Na2-bentonite and H2-Bentonite, followed by pillarization using pillaring agent titanium tetraisopropoxide in hydrochloric acid. The as prepared materials were characterized by X-Ray Diffraction, Scanning Electron Microscope and nitrogen adsorption-desorption isotherms. The specific surface area of TiO2-bentonite (18.329 m2/g) was higher than that of non pillared bentonite (Na2-Bentonite: 15.884 m2/g and H2-Bentonite: 13.933 m2/g). TiO2-pillared bentonite was categorized as mesoporous material with the average pore diameter was 9.33 nm. Photocatalytic activity of TiO 2-pillared bentonite on degradation of indigo carmine dye was determined at various conditions of initial pH solution, radiation time, photocatalyst dosage and initial dye concentration. The maximum degradation percentage of indigo carmine dye under UV irradiation was 96.5% which was obtained at pH = 3, photocatalyst dosage 0.4 g, initial dye concentration 15 mg/L for 180 minutes. Photocatalytic activity of TiO2-bentonite on degradation of indigo carmine under solar light was higher than that of under UV irradiation. Keywords: Bentonite, titania pillared bentonite, degradation, indigo carmine

K169 - SYNTHESIS OF ZINC FERRITE (ZnFe2O4) NANOCRYSTALS: COMPARISON OF SOL-GEL AND HYDROTHERMAL METHODS Syukri Arief and Rahmayeni Laboratorium Material, Kimia – FMPA Universitas Andalas, [email protected]

Abstract: Zinc ferrite (ZnFe2O4) nanocrystals with diameter of about 10 nm, have been obtained through solgel and hydrothermal methods. In solgelmethod, ethanol is used as a solvent, while citric acid as a chelating agent. Using the hydrothermal process, NaOH used as precipitator and creator of alkaline conditions. We have studied the use solgel and hydrothermal methods in synthetic ferrite compounds, especially for the size and shape of the particles. A point to note that the formation process (method) so play an important role on the particle size and quality of the ferrite compound. Synthesized ferrite showed superparamagnetic properties as expected for a single domain nanoparticles with the values of magnetization were relatively good. Keywords: ZnFe2O4, solgel, hydrothermal, superparamagnetic

K170 - PENENTUAN DERAJAT GRAFTING DARI POLIPROPILENA DENGAN MALEAT ANHIDRIDA Tengku Rachmi Hidayani*, Darwin Yunus, Yugia Muis Politeknik ATI Padang, Jalan Bungo Pasang Tabing, Padang 25171 (0751-7055053)*, [email protected] (081361906746)

Abstrak: Telah dilakukan penelitian tentang pengaruh konsentrasi maleat anhidrida (MA) terhadap derajat grafting maleat anhidrida pada polipropilena (PP) dengan inisiator benzoil peroksida (BPO). Reaksi grafting dilakukan dengan teknik pengolahan reaktif dalam internal mixer pada suhu 165oC dengan variasi komposisi (b/b) PP : MA : BPO, 97:1:2, 95:3:2, 92:6:2, 89:9:2, dan 86:12:2 . selanjutnya dilakukan penentuan derajat grafting dengan metode titrasi dan analisa spectra FTIR untuk menentukan adanya grafting maleat anhidrida pada rantai polipropilena. Hasil penelitian menunjukan bahwa proses grafting maleat anhidrida pada polipropilena dapat terjadi dan perbandingan berat campuran PP:MA:BPO (95:3:2) merupakan derajat grafting tertinggi maleat anhidrida. Kata kunci: Ikat Silang, Grafting Polipropilena, Maleat anhidrida

K171 - ENKAPSULASI IBUPROFEN DENGAN KITOSAN-PEKTIN MENGGUNAKAN METODE GELASI IONIK Tetty Kemala, Ahmad Sjahriza, Taufiq Hidayat Departemen Kimia, FMIPA, Institut Pertanian Bogor, [email protected]

Abstract: Ibuprofen is a non-steroid anti-inflammatory drug commonly used for pain relief, but it can irritate the upper gastrointestinal tract and has a short half-time. Encapsulation of ibuprofen can diminish those disadvantage. Chitosan and pectin were used as encapsulation materials due to many advantages for medical application. Encapsulation were prepared by combining various ratios of chitosan-pectin and sodium tripolyphosphate 5% (w/v) with 1 and 2 hours cross-linking duration. The capsules were prepared through ionotropic gelation method. Encapsulation efficiency was 34%-68%, decreased along with the increasing pectin composition and cross-linking time. The chitosan-pectin ratio 19:1 with 1 hour for cross-linking duration had efficiency about 66%. Pectin maintained the shape stability of wet capsule until dried and detained ibuprofen release in dissolution test. The ibuprofen release of A1(19:1, 1 hour), C1(17:3, 1 hour), and A2(19:1, 2 hours) reached 6.2%, 6.5%, and 3.0%, respectively. The kinetics of ibuprofen release followed Korsmeyer Peppas model. The surface of capsules were not smooth with particle size of 1.5-2.0 mm.

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Kumpulan Abstrak Kelompok Kimia (K) Keywords: chitosan, ibuprofen, ionotropic gelation, pectin

K172 - EFFECT OF WATER FLOW RATE AND HEIGHT BED OF ZEOLITE AT NEUTRALIZATION OF ZEOLITE CATALYST BY FLUIDIZATION METHOD Tri Kurnia Dewi1), Zainal Fanani2 1

Fakultas Teknik, Universitas Sriwijaya, [email protected]. 2Fakultas MIPA, Universitas Sriwijaya, [email protected]

Abstract: Zeolites ware a group of minerals that formed by hydrothermal process in alkaline igneous rocks. Zeolites use as catalysts because of its structure have large pores, large surfaces and active sides. Zeolites can be used as an adsorbent because its dehydration properties so that the structure of the zeolite pores opened and internal surface area getting bigger. Before used as catalysts or adsorbents, zeolites must be activated firstto clean the porous surfaces from impurities. In this research, zeolites ware activated by refluxing for 6 hours with H2SO4 1 N. Activated zeolite (H-zeolites) have to be neutralized to eliminate the remaining acid. Neutralizationzeolite process in this research was done by fluidization method with fixed variable water flow rates ware 1.5 lpm; 2.0 lpm and 2.5 lpm, and a heigth bed of zeolite ware 10 cm; 15 cm; 20 cm and 25 cm. The equipment was fluidization column with diameter 5.5 cm and heights 200 cm. Output water H-zeolite from fluidization column was measured in intervals of 10 minutes until pH of 6.4 (neutral). The bestresults from this research was when the water flow rate and heigth bed of zeolite used ware 1.5 lpm and 10 cm with neutral time for 90 minutes. The fastest time of perfect fluidization in this research was 10 minutes with water flow rate was 1.5 lpm and highth bed of zeolite was 10 cm. Keywords: Zeolites, fluidization, catalyst, pH, porosity

K173 - THE INFLUENCE OF DOP AND ACETOPHENON PLASTICIZER TO SENSITIVITY AND SELECTIVITY OF CHITIN MEMBRANE ION SELECTIVE ELECTRODE Zn Widia Purwaningrum, Poedji Loekitowati Hariani, Pariga Departement of Chemistry Faculty of Mathematic and Sains University of Sriwijaya, [email protected]

Abstract: The research of dioctyl phtalat (DOP) and acetophenon plasticizer influence to sensitivity and selectivity of chitin membrane Ion Selective Electrode (ISE) Zn has been done. The chitin membranes ISE Zn were made by mixing 0.075 g of chitin, 0.25 g of lithium chloride (LiCl), 6 g of N, N-dimethyl acetamide (DMA), 6 g of 1-methyl-2-pyrrolidone (NMP), 0.075 g of polyvinyl chloride (PVC) and 0.0444 g plasticizer (DOP and acetophenon). The resulting chitin membrane wereapplied on electrochemical cellequipped with electrode system notated as Ag |AgCl | KCl(saturated)| 3M KCl || Testing solution | Membrane | Inner solution |AgCl | Ag using Zn2+ as ion target. The utilization of acetophenon plasticizer on chitin membrane ISE Zn increasedsensitivity from 37.3 mV/decade to 29.35 mV/decade within concentration range of 10-5-10-1 M and detection limit10-5,79594 M. DOP plasticizer on the other hand showed decreased of sensitivity to -31.92 mV/decade which confirmed no response of chitin membrane to Zn 2+ ion. The selectivity of chitin membrane ISE Zn was altered due to plasticizer addition as follow; without plasticizer: Zn 2+> K+> Na+> NH4+> Ba2+> Hg2+> Mg2+> Cd2+> Ca2+> Cu2+,using DOP plasticizer: Zn2+> Na+> Ca2+ > Cd2+> Hg2+> K+> Mg2+> Ba2+> NH4+> Cu2+, and acetophenon plasticizer: Zn2+> K+> Na+> Ba2+> NH4+> Ca2+ > Cd2+> Hg2+> Mg2+> Cu2+. Keywords: chitin membrane, Zn2+ion selective electrode, sensitivity, selectivity, plasticizer.

K174 - UJI AKTIVITAS SITOTOKSIK FRAKSI DAUN PEDADA (Sonneratia caseolaris L.) DENGAN METODE BLST Yulianis1,Madyawati Latief2, Ainun Jariah1 1

Program Studi Farmasi, STIKES Harapan Ibu Jambiemail: [email protected]. 2Fakultas Sains danTeknologi, Universitas Jambi

Abstract: Sonneratia caseolaris L.contain bioactive compounds such as flavonoids, phenols, terpenoids, and tannins is andactive anti-oxidants. Compounds are experimental as anti-oxidants have potential anti-cancer, sodothe cytotoxic activityof the leaf Sonneratia caseolaris L. Samples were fractionated in stages with n-hexane, ethylacetate and methanol. Cytotoxicactivity testwas conducted using Brine Shrimp Lethality Test(BSLT). The results ofthe cytotoxicactivity test by the method BSLT, LC50 values obtained methanol fraction leaves Sonneratia caseolaris L. 22.38ppm, 24.89ppmof ethyl acetate fraction and54.83 ppm hexane fraction, Test the cytotoxic activity of each fraction are actively researched Sonneratia caseolar is L. leaves cytotoxic marked with LC50 valuesof the three small extract of 1000 ppm. Keywords: Brine Shrimp Lethality Test, LC50, Sonneratia caseolaris L.


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K175 - PENGARUH BEBERAPA PERLAKUAN TERHADAP PENGURANGAN KADAR FORMALIN PADA TAHU IKAN YANG BEREDAR DI PASAR PADANG Yulizar Yusuf dan Zamzibar Zuki Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas Padang, Email [email protected]

Abstract: Food treatment cases using toxic chemicals such as formalin which is found in the society in tofu and fishes in order to increase the life time. To solve the above problems has been done a researche by observacy the effect of treatments (washing, soaking and cooking) in decreasing the formalin. Content in the samples by spectroscopic method at wavelength UV-Vis λ= 412 nm. The laboratory data shows the decreasing in the formalin content of the tofu and fishes samples respectively as 18,39%, 25,91% and 63,21% on tofu and 43,96%, 33,34% and 53,79% on the fresh fish. From the field samples estimated the formalin content found 38,40%, 53,17% and 87,32% on tofu and 22,72%, 17,04% and 96,10% on fresh fish. Keywords: formalin, tofu, fish, Reagen Nash, Spectrophotometri UV-Vis.

K176 - PREPARATION AND CHARACTERIZATION OF Cr/ACTIVATED CARBON CATALYST FROM PALM EMPTY FRUIT BUNCH Zainal Fanani1), Dedi Rohendi1), Tri Kurnia Dewi2), Muhammad Dzulfikar A1) 1

Fakultas MIPA, Universitas Sriwijaya, [email protected]. 2Fakultas Teknik, Universitas Sriwijaya, [email protected]

Abstract: Preparation and characterization of Cr/activated carbon catalyst from palm empty fruit bunch had been done. The research were to determine the effect of carbonization temperature towards adsorption of ammonia, iodine number, metilen blue number, andporosity of activated carbon and Cr/activated carbon catalyst. The determination of porosity include surface area, micropore volume and total pore volume. The results showed the best carbonization temperature activated carbon and Cr/activated carbon catalyst at 700°C. The adsorption ammonia of activated carbon and Cr/activated carbon catalyst as 6.379 mmol/g and 8.1624 mmol/g. The iodine number of activated carbon and Cr/activated carbon catalyst as 1520.16 mg/g and 1535.67 mg/g. The metilen blue number of activated carbon and Cr/activated carbon catalyst as 281.71 mg/g and 319.18 mg/g. The surface area of activated carbon and Cr/activated carbon catalyst as 1527.80 m2/g and 1652.58 m2/g. The micropore volume of activated carbon and Cr/activated carbon catalyst as 0.7460 cm3/g and 0.8670 cm3/g. The total pore volume of activated carbon and Cr/activated carbon catalyst as 0.8243 cm3/g and 0.8970 cm3/g. Keywords: activated carbon, palm empty fruit bunch, porosity, catalyst, crom

K177 - OPTIMASI PERTUMBUHAN MIKROALGA Chlorella vulgaris UNTUK MENINGKATKAN KADAR GLUKOSA SEBAGAI BAHAN BAKU BIOETANOL Zulkarnain Chaidir, Indah Kurnia , Elida Mardiah Laboratorium BiokimiaJurusan Kimia FMIPA Universitas Andalas, Padang, (e-mail: [email protected])

Abstrak: Penelitian tentang bioenergi dari mikroalga telah banyak dilakukan, namun kebanyakan lebih fokus terhadapbiodiesel dan relative sedikit tentang bioetanol.Dari sekian banyak spesies mikroalga ada beberapa spesies yang kandungan karbohidratnya relatif tinggi yang berpeluang untuk dijadikan bahan baku pembuatan bioethanol. Penelitian mengoptimasi pertumbuhan mikroalga Chlorella vulgaristelah dilakukan untukmeningkatkan kadar karbohidrat yang dikandung Chlorella vulgaris. Optimasi dilakukan meliputi intensitas cahaya, sumber nitrogen. Untuk memperoleh kadar glukosa dilakukan menghidrolisis Chlorella vulgaris dengan memvariasikan konsentrasi, suhu H2SO4 dan lama waktu hidrolisis. Untuk perumbuhan Chlorella vulgaristerbaik intensitas cahaya diperlukan 2000 lux , sumber nitrogen pupuk ZA. Untuk menghidrolisis Chlorella vulgaris digunakan H2SO4 2N pada suhu 1200C selama 15 menit, dihasilkan glukosa 926,582 mg/L. Kata kunci: Mikroalga , Chlorella vulgaris, karbohidrat, glukosa , bioethanol

K178 - PENENTUAN KONDISI OPTIMUM AKTIVITAS ENZIM XILANASE TERMOSTABIL DARI BAKTERI Anoxybacillus rupiensis Julinar, Ara Rizki Purilian dan Muharni Jurusan Kimia FMIPA Universitas Sriwijaya, [email protected]

Abstrak: Telah dilakukan penentuan kondisi optimum aktivitas enzim xilanase termostabil dari bakteri Anoxybacillus rupiensis. Pengamatan dilakukan terhadap pertumbuhan Anoxybacillusrupiensis selama 24 jam, setiap 2 jam diukur OD (Optical dencity). Ekstrak kasar enzim diperoleh dengan cara sentrifugasi pada kecepatan 3000 rpm. Uji aktivitas enzim xilanase dilakukan dengan metode DNS dan kadar protein diukur dengan metode Biuret. Hasil pengamatan terhadap pertumbuhan bakteri Anoxybacillus rupiensis didapatkan

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Kumpulan Abstrak Kelompok Kimia (K) fase eksponensial terjadi pada jam ke 2 sampai jam ke 16. Hasil uji aktivitas enzim diperoleh aktivitas xilanase tertinggi pada jam ke 16 pertumbuhan bakteri Anoxybacillus rupiensis yaitu sebesar 3,25 x 10-2Unit/mL dengan kadar protein sebesar 4,0926 mg/mL. Kondisi optimum enzim xilanase diperoleh pada waktu inkubasi 4 menit, konsentrasi substrat 1%, suhu 70oC, dan pH 9 dengan aktivitas sebesar 4,45 x 10-2Unit/mL. Kata kunci: Anoxybacillus rupiensis, enzim xilanase termostabil, kadar protein, aktivitas enzim, dan kondisi optimum enzim.

K179 - PEMBUATAN DAN KARAKTERISASI KATALIS Pt-Co/C DAN Pt-Ni/C UNTUK PEMFC DENGAN METODE ELEKTRODEPOSISI Dedi Rohendi FMIPA, Universitas Sriwijaya , email: [email protected]

Abstract: Catalyst in electrode of the Proton Exchange Membrane Fuel Cell (PEMFC) is very important. The catalyst of PEMFC generally using platinum which expensive and easy to be contaminated. The manufacturing and characterization of Pt-Co/C and Pt-Ni/C Catalyst for Proton Exchange Membrane Fuel Cell (PEMFC) using Electrodeposition methods have been done for increasing catalytic activity and reducing platinum content. Manufacturing electrodes by electrodeposition method were done by direct electrodeposition the solutions of H2PtCl6.6H2O and CoCl2.6H2O/NiCl2.6H2O onto Gas Diffusion Layer (GDL). Cyclic Voltammetry (CV), X-Ray Diffraction (XRD) and Electrochemical Impedance Spectroscopy (EIS) analysis results showed that both of the combined catalyst Pt-Co/C and Pt-Ni/C successfully be formed and showed good catalytic activity. Based on the analysis of CV and EIS, the Pt-Co/C catalyst with a ratio of Pt: Co = 2:8 can be used as the catalyst for PEMFC electrodes. Meanwhile, electrodes Pt-Ni/C that can be considered for be used as a PEMFC electrode is an electrode with a ratio of Pt: Ni = 4:6. Keywords: Pt-Co/C, Pt-Ni/C, electrodeposition, PEMFC.

K180 - ISOLASI SENYAWA FENOLAT DARI MIKROBA ENDOFITIK Aspergillus niger PADA AKAR TUMBUHAN TUNJUK LANGIT (Helminthostachys zeylanica (Linn) Hook) Fitrya (1), Muharni (2), dan Wita Nugraheni (2) (1) PS Farmasi Fakultas Matematika Ilmu Pengetahuan Alam UNSRI, Sumatera Selatam, (2) Jurusan Kimia Fakultas matematika Ilmu Pengetahuan Alam UNSRI

Abstrak: Telah diisolasi senyawa golongan fenolat dari jamur endofitik Aspergillus niger pada akar tumbuhan tunjuk langit [Helminthostachys zeylanica (Linn) Hook]. Isolasi diawali dengan kultivasi jamur Aspergillus niger dalam 5 liter media PDB (Potato Dextrose Broth) selama delapan minggu. Terhadap media, selanjutnya dilakukan ekstraksi secara partisi menggunakan etil asetat kemudian dievaporasi. Ekstrak pekat etil asetat yang diperoleh dipisahkan dan dimurnikan dengan teknik kromatografi kolom gravitasi sehingga didapatkan senyawa murni berupa padatan berwarna putih. Senyawa murni yang diperoleh ditentukan strukturnya dengan metode spektroskopi UV, IR, NMR 1D dan 2D. Berdasarkan analisa data spektroskopi maka senyawa murni hasil isolasi adalah golongan fenolat yang memiliki sepasang proton yang terkopling meta, mempunyai gugus –OH terkhelasi dengan gugus karbonil keton, dan 3 gugus metoksi. Senyawa memiliki karbon sebanyak 18 terdiri dari 14 C sp 2 dan 4 C sp3. Berdasarkan data ini disimpulkan mikroba endofitik Aspergillus niger dari akar tumbuhan tunjuk langit menghasilkan senyawa yang berbeda dari tumbuhan inangnya. Kata kunci: Jamur endofitik, H. zeylanica, fenolat

K181 - STANDARDISASI DAN UJI AKTIVITAS ANTIBAKTERI EKSTRAK BIJI PALEM PUTRI (Adonidia merrillii (Becc.) Becc.) TERHADAP Staphylococcusaureus dan Escherichiacoli Herlina, Shaum Shiyan, Rizka Amalia Hasanah PS. Farmasi FMIPA Universitas Sriwijaya, Email : [email protected]

Abstract: Christmas palm (Adonidia merrillii (Becc.) Becc.) is an ornamental plant that is often planted on the roadside or around houses. Based on phytochemical screening, showed that christmas palm seed contains flavonoids, tannins, and triterpenoids. This study was aimed to determine antibacterial activity of christmas palm seed extract, minimum inhibitory concentration (MIC) of extract against Staphylococcus aureus and Escherichia coli, as well as obtaining the standard parameters of ethanol extract. Christmas palm seed extract was obtained through multilevel extraction method. Antibacterial activity assay carried out using agar diffusion with paper discs. MIC determination was conducted for the active extracts. Specific and non specific parameters of the ethanol extract was determined to standardize the extract. The results showed that 15% of both ethyl acetate extract and ethanol extract of christmas palm seed posses antibacterial activity against Staphylococcus aureus with inhibition zone value 9.57 ± 1.13 mm and 6.97 ± 0.7 mm respectively. Similar potential was shown against Escherichia coli, with inhibition zone value 13.72 ± 3.57 mm and 6.79 ± 0.82 mm respectively. The minimum inhibitory concentration (MIC) of ethanol extract and ethyl acetate extract against Staphylococcus aureus and SEMIRATA Bidang MIPA 2016; BKS-PTN Barat

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Kumpulan Abstrak Kelompok Kimia (K) Escherichia coli was 2%. Ethanol extract standardization result from specific parameter tests showed that the extract was thick, brownish black in color, had characteristic odor, and astringent with slightly bitter taste. Water soluble extractive value was 28.28% ± 0.56% and ethanol soluble extractive value was 6.29% ± 0.73%. The result from non-specific parameters tests showed total ash content was 8.99% ± 0.40%, acid insoluble ash content was 0.30% ± 0.05%, loss on drying was 22.43% ± 1.20%, and density of extract was 0.96 ± 0.01. Keywords: Adonidiamerrillii (Becc.) Becc, antibacterial, standardization.

K182 - Antioxidant Activity By DPPH Assay of Ethanolic Extract and Essential Oilof Gelam Tikus (Melaleuca leucadendra var. minor (Sm.) Duthie) Laida Neti Mulyani, Budi Untari, Tri Wahyuni Fakultas MIPA, Farmasi Universitas Sriwijya; email: [email protected]

Abstract: Antioxidant is a compound that can ihibits free radical activity which damage living organism tissue. The use of synthetic antioxidant began to be restricted, therefore exploration of natural antioxidant is being developed. Gelam Tikus (Melaleuca leucadendra var. minor (Sm.) Duthie) isone of plants that has potency as natural antioxidant. Natural compound from Gelam Tikus that are expected has an antioxidant activity are flavonoid, alkaloid, tannin and terpenoid from ethanol extract and essential oil. This research aims to determine antioxidant activity of essential oil and ethanol extract from Gelam Tikus leaves by DPPH (1,1-diphenyl-2picrylhidrazil) assay. Isolation of essential oil was performed by steam distillation method and ethanolic extract has been carried out by maceration method. Antioxidant activity was determinedspectrophotometrically by absorbance reduced of DPPH at a wavelength 525 nm. Antioxidant activity was expressed as concentration antioxidant which have DPPH free radical scavanging about 50% (IC50) using quercetin as refference. Based on the result it showed that ethanolic extract have strong antioxidant activity with IC 5022,18 μg/mL, while essential oil are weak antioxidant awith IC50 523,77 μg/mL. Based on the result of statistical analysis it can be conclude, ethanolic extract with concentration 400 μg/mL more potential as an antioxidant activity that has equvalence with 10 μg/mL quercetine with significance level of p>0,05.

Keywords: Melaleuca leucadendra var. minor (Sm.) Duthie leaves, essential oil, ethanolic extract, antioxidant, DPPH (1,1-diphenyl-2-picrylhidrazil)

K183 - HIPOTESIS AVOGADRO: “ GAGAL” Almunady T.Panagan Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sriwijaya; [email protected]

Abstrak: Suatu analisa, pengujiaan, dan pembuktian terhadap hipotesis, teori, dan hukum dalam cabang/disiplin ilmu apapun perlu dilakukan. Hasil dari langkah-langkah ini, akan memberikan kontribusi yang sangat diperlukan bagi perbaikan dan kemajuan ilmu pengetahuan itu sendiri. Sebenarnya hipotesis, teori, dan hukum disadari atau tidak adalah “Alat Ukur/Bantu” yang diciptakan/dibuat oleh manusia untuk menjawab pertanyaanpertanyaan mandasar yang ada pada dirinya sendiri, atau keinginannya mengerti/menjelaskan semua fenomena yang diamatinya, dan bagaimana memperoleh apa yang dibutuhkannya secara efektif dan efisien. Hipotesis Avogadro, dalam kenyataannya dijadikan “Dasar/Landasan” Ilmu Termodinamika, hasilnya antara lain R (tetapan gas universal = 0,082 liter. Atm. Mol-1 .K-1) yang dipakai untuk penentuan/pengukuran termodinamika dan penurunan persamaan-persamaan turunan, hal ini kurang dapat dipahami, Hipotesis Avogadro adalah “Hipotesis Bukan Hukum”, hukum yang telah dibuktikan secara luas dan benar, adalah suatu alasan yang cukup baik untuk dapat diterima, dipakai dalam pengembangan cabang ilmu itu lebih lanjut, secara teori Hipotesis Avogadro ternyata “Gagal”. Kata kunci: apogadro tetapan gas universal persamaan termodinamika turunan

K184 - IDENTIFIKASI STRUKTUR SENYAWA ANTIDIABETES DARI EKSTRAK ETIL ASETAT BIJI NAMNAM (Cynometra cauliflora L.) Dede Sukandar, Siti Nurbayti, dan Mei Latifah Program Studi Kimia FST UIN Syarif Hidayatullah Jakarta, Jalan Ir. H. Juanda No 95 Ciputat 15412 Indonesia, e-mail: [email protected]

Abstract: Identification of antidiabetic compound from the ethyl acetate extract of the namnam seeds (Cynometracauliflora L.) has been performed. Extraction was done by maceration, antidiabetic activityby method of inhibition α-glucosidaseenzyme (Kim Yong Mu), fractionated by column chromatography and identification of the compound structure using by UV-Vis, FTIR, LCMS and1H-NMR. Antidiabetic activity test of ethyl acetate extract was obtained by IC50 14.31 ppm. Results of column chromatography of ethyl acetate extract with the mobile phase of ethyl acetate: n-hexane 6: 4 was obtained 3 fractions and by preparative of thin layer chromatography with chloroform: ethyl acetate 9: 1 as mobile phase was obtained isolate 1. Isolate 1 was yellow

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Kumpulan Abstrak Kelompok Kimia (K) pasta as much as 23 mg and Rf 0,32cm. The compounds of isolate 1 gave λmax at 210 nm with transition π→π* electron and containing functional groups of OH (3329.14 and 3319.49 cm-1), C-OH cyclic (1024.20 cm-1), C-O (1120 cm-1), C=C (1417,68; 1456,26 cm-1), C-H (2945.30 cm-1 and 2833.43 cm-1). LCMS results of isolates 1 obtained molecular weight 184 g/mol. The results of 1H-NMR δ 3.78 (3H, s,OCH3), δ 7.11 (2H, s, H-2, H-6) and expected methyl gallate compound. Keywords: Namnam (Cynometra cauliflora L.), antidiabetic, α-glucosidase enzyme,chromatography


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JADWAL ACARA SEMIRATA JADWAL PARALLEL SESSION KUMPULAN ABSTRAK

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