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All Journal Forum Pasca Sarjana Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENGABDIAN KEPADA MASYARAKAT PROSIDING SEMINAR KIMIA Chimica et Natura Acta JURNAL SAINS INDONESIA Jurnal ABDINUS : Jurnal Pengabdian Nusantara Indonesian Journal of Chemical Science and Technology KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Educenter: Jurnal Ilmiah Pendidikan Journal of Learning Improvement and Lesson Study EDUCENTER JURNAL PENDIDIKAN Jurnal Bioteknologi & Biosains Indonesia
Murniaty Simorangkir
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Journal : PROSIDING SEMINAR KIMIA

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AKTIVITAS ANTIOKSIDAN EKSTRAK N-HEKSANA, ETILASETAT DAN ETANOL DARI BUAH RANTI HITAM (Solanum Blumei) Ness Ex Blume DENGAN METODE PEREDAMAN DPPH Murniaty Simorangkir; Ribu Surbakti; Tonel Barus; Partomuan Simanjuntak
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan dari ekstrak n-heksan, etilasetat dan etanol dari buah Ranti Hitam (Solanum blumei Ness ex Blume). Uji antioksidan dilakukan dengan metode peredaman DPPH (1.1-Diphenyl-2-Picrylhydrazyl). Hasil uji antioksidan menunjukkan aktivitas antioksidan tertinggi adalah ekstrak etanol dengan % inhibisi (38,72 %) dibandingkan ekstrak etilasetat (17,37 %) dan ekstrak n-heksana (3,015 %) dengan nilai IC50 dari ekstrak etanol terkecil (128,79 ppm), diikuti ekstrak etilasetat (343,37 ppm) dan ekstrak n-heksana (3570,66 ppm). Nilai IC50 (Inhibition Concentration 50) adalah konsentrasi antioksidan (µg/mL) yang mampu menghambat 50% radikal bebas. Kandungan metabolit sekunder pada ekstrak etanol buah adalah alkaloid, sedikit flavonoid, fenol dan tanin
ANALISIS KEBUTUHAN E-MODUL BERBASIS MASALAH MENGGUNAKAN APLIKASI MOODLE MATERI KIMIA SISWA SMA/MA KELAS XI SEMESTER II Siti Khodijah Dalimunthe; Nurfajriani Nurfajriani; Murniaty Simorangkir
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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This study aims to analyze the need develop a teaching material needed in schools, namely problem-based e-module using Moodle on chemistry material for even semester XI SMA. This type of research is part of development research using ADDIE. This research is only up to in the first stage. Subject and location of this research are chemistry teachers and students of class XI SMA N 1 Binjai Langkat district. research instrument used interview questionnaires and BSNP assessments. the research obtained several result, namely schools using the 2013 curriculum, teaching materials in the form of textbooks. The existence of textbooks is still abstract and the level is too high so it is difficult for students to understand. The problem-based learning model and use of electronic media in learning hav'nt implemented. The chemistry textbook analyzed was concluded to be suitable for use, however, in the book, the material contained is very short, does'nt contain multimedia links as additional reference material that can enrich students' insight and make it easier to understand the material. can be concluded that it is necessary to develop problem-based e-module teaching materials using the Moodle application on chemistry material for even semester XI SMA. Keywords: Needs Analysis, E-Module Media
Co-Authors Agnes Normawati Silaban Aisjah Girindra Ananda, Zhafira Dwika Anggini, Cindy Anna Juniar Clarisa, Rahma Elvri Melliaty Sitinjak Ester Basani Panggabean Fachriyan H. Pasaribu Freddy Tua Musa Panggabean Harahap, Syntia Wulandari Hotang, Nadia Givani Br Hotang Hulu, Shella Julia Rani Idramsa Idramsa IMAN PERMANA MAKSUM Indra Masmur Juniastel Rajagukguk, Juniastel KHOMAINI HASAN Lestari, Gusti Ayu Nurfajriani Nurfajriani Nurfajriani Nurfajriani, Nurfajriani Nurmaidasari Pane, Yulia Ratu Partomuan Simanjuntak Partomuan Simanjuntak Ratih Baiduri Ribu Surbakti Ribu Surbakti, Ribu riwayati riwayati RR. Ella Evrita Hestiandari Sajaratud Dur Saragih, Ruth Yohana SARONOM SILABAN Simatupang, Endang Simbolon, Emma Juli Anamasta Siti Khodijah Dalimunthe Sitinjak, Elvri Melliaty Sitompul, De Enovani Syazwana Izni Tarigan, Dedi Tonel Barus Tonel Barus, Tonel Toto Subroto Wasmen Manalu Yesica Marcelina Romauli Sinaga Yudha, Sandy