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All Journal Jurnal Pendidikan Kimia (JPKim) AL-HAYAT: Journal of Biology and Applied Biology Jurnal Pendidikan Fisika dan Teknologi Jurnal Abdimas Mahakam Jurnal Darma Agung Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Agrica Ekstensia Jurnal Pengabdian kepada Masyarakat Nusantara JURNAL PENDIDIKAN SAINS SOSIAL DAN AGAMA Indonesian Journal of Chemical Science and Technology Jurnal Nuansa Akademik: Jurnal Pembangunan Masyarakat Jurnal ComunitA Servizio Edu Cendikia: Jurnal Ilmiah Kependidikan Jurnal Ilmu Pendidikan Indonesia Lensa: Jurnal Kependidikan Fisika PKM Maju UDA Pengembangan Penelitian Pengabdian Jurnal Indonesia (P3JI) Journal of Community Service
Irving Josafat Alexander
Universitas HKBP Nommensen
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Jurnal Pendidikan Kimia (JPKim)

 1 
PEMBUATAN MINYAK KELAPA MURNI (Virgin Coconut Oil, VCO) MELALUI KOMBINASI TEKNIK FERMENTASI DAN ENZIMATIS MENGGUNAKAN GETAH PEPAYA Ramlan Silaban; Vivi Hutapea; Riza Manullang; Irving Josafat Alexander
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 2 (2014): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.387 KB) | DOI: 10.24114/jpkim.v6i2.5579

Abstract

Abstract. This study aims to determine the yield of Virgin Coconut Oil (VCO) is made through a combination of fermentation and enzymatic techniques using papaya latex. Previous papaya sap is processed into crude papain enzyme and fermentation using yeast tempeh (Rhizopus oligosporus). Concentration of 100 ml coconut milk is added 0.5 grams of tempeh and coarse with variation of the enzyme papain 0.0 grams; 0.2 grams; 0.4 grams; 0.6 grams; 0.8 grams and with a pH of 3.4 and 5 variations of this mixture was incubated for 24 hours at room temperature. Of 100 mL of milk obtained optimum yield Virgin Coconut Oil (VCO) of 27.8 mL of the enzyme at a concentration of as much as 0.6 grams of crude papain at pH 5. addition of the enzyme papain is able to increase the yield of coarse Virgin Coconut Oil (VCO), but at a certain concentration will be able to lower the yield. The lower the pH, the lower the yield of Virgin Coconut Oil (VCO) is obtained. Analysis of the quality of Virgin Coconut Oil (VCO) in terms of free fatty acid 0.1720%, 0.18% and a water content of 9.45 mg iodine / g. The Virgin Coconut Oil (VCO) obtained had been met requirement set by SNI standard’s. Kata kunci: Virgin Coconut Oil (VCO), Getah Pepaya, Ragi Tempe
Preparing of chemical bonding learning media based android using smart apps creator program Ramlan Silaban; Osi Annauli Br Girsang; Roselva Theresia Manalu; Marham Sitorus; Simson Tarigan; Irving Josafat Alexander
Jurnal Pendidikan Kimia (JPKIM) Vol 15, No 3 (2023): December
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v15i3.51492

Abstract

The aim of this research is to obtain Android-based chemical bond learning media using the smart apps creator program that is feasible and eligible to use. To achieve the goal, development research has been carried out which refers to the 4 D model with the stages define, design, develop and disseminate. The research was conducted at SMA Negeri 5 Medan involving teachers and students of class X MIA. The research instruments used are non-test instruments including needs analysis instruments, feasibility test instruments and student response instruments. The research results are: (1). An Android-based chemical bond learning media has been obtained using a smart apps creator program with features main view, main menu, learning material, evaluation, summary and references. (2). The Android-based chemical bond learning media obtained was deemed suitable for use in learning with a feasibility level of 85.0% with very worthy category. (3). The students give good eligibility responded (82.6%) for the Android-based chemical bond learning media obtained with meets the requirements for use as learning media.Keywords: Android based; Chemical bonding; Learning media; Smart apps creator program
Co-Authors Bajongga Silaban, Bajongga Bangun Tampubolon ESRIDA HUTAHAEAN Fajar Gohanda Sinaga FELIA MUTIARA HUTAPEA Freddy Tua Musa Panggabean Ginting, Rindang Leni Saputri Gloria Sirait Goldbert Harmuda Duva Sinaga halawa, analiser Harita, Taufik Hidayat Hersakso Sinurat Hersakso Sinurat Justinos Ray Nainggolan Lampola Sitorus Lena Rosdiana Pangaribuan Lukman Pardede Manalu, Judika Manurung, Hotman Marbun, Juliaster Marham Sitorus Mariana Br. Surbakti Marpaung, Rince Melhyada Veronika Panggabean Miranda, Xenia S. Monalisa Martha Siahaan MULA SIGIRO Nababan, Melissa Febristira Naibaho, Benika Nainggolan, Justinos Ray Osi Annauli Br Girsang Pandiangan, Samse Pardede, Dewi Lestari Pardede, Hebron Patricia Rohana Septiana Simarmata Pelita Ananda Sianturi Prasetyo, Retno Agung Purba, Jusbinaraya Purba, Melfa Uli Magalena Ramlan Silaban Ray Nainggolan, Justinos Riza Manullang Roselva Theresia Manalu Sagala , Irmadayanti Sary Marcella Sitompul Siahaan, Kristina Lestari Sihite, Muda Sakti Raja Sijabat, Naomi Christine Silalahi, Dewi Paulina Silitonga, Suryani Simson Tarigan Sinaga, Mardame Pangihutan Sitinjak , Erni Kusrini Sunggu Sirait Surbakti, Mariana Br Suryadi Hotma Roganda Mahulae Susanti Timotius Agung Soripada Vivi Hutapea