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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Pendidikan Matematika dan IPA Sains Olahraga : Jurnal Ilmiah Ilmu Keolahragaan TABULARASA Jurnal Tematik Jurnal Ilmu Pendidikan Indonesia PROSIDING SEMINAR KIMIA Chemistry in Education Lantanida Journal Jurnal Obsesi: Jurnal Pendidikan Anak Usia Dini Jurnal Penelitian Kesehatan Suara Forikes Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Kimia (JPKim) EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Indonesian Journal of Medicine AL-HAYAT: Journal of Biology and Applied Biology Efektor Ideas: Jurnal Pendidikan, Sosial dan Budaya Jurnal Paedagogy Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Budapest International Research and Critics in Linguistics and Education Journal (Birle Journal) Eduproxima : Jurnal Ilmiah Pendidikan IPA Indonesian Journal of Chemical Science and Technology Khazanah Intelektual Didaktika: Jurnal Kependidikan Jurnal ComunitA Servizio Seminar Nasional Peningkatan Mutu Pendidikan KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Jurnal Warta Desa (JWD) Jurnal Penelitian Sains dan Pendidikan (JPSP) Educenter: Jurnal Ilmiah Pendidikan Jurnal Pijar MIPA Jurnal Ilmu Pendidikan Indonesia JURNAL PENELITIAN BIDANG PENDIDIKAN Duconomics Sci-meet (Education & Economics Science Meet) Mahir : Jurnal Ilmu Pendidikan dan Pembelajaran JIPI (Jurnal IPA dan Pembelajaran IPA) Proceeding of International Conference on Multidisciplinary Research EDUCENTER JURNAL PENDIDIKAN J-CEKI Prosiding Seminar Nasional Keguruan dan Pendidikan (SNKP) Proceeding of The International Conference on Mathematical Sciences, Natural Sciences, and Computing
Ramlan Silaban
Chemistry Education, Faculty Of Mathemathics And Natural Science, Universitas Negeri Medan, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Indonesian Journal of Chemical Science and Technology

 1 
Analysis of the Quality of Used Cooking Oil Used in Frying Chicken Dian I Sinurat; Ramlan Silaban
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 4, No 1 (2021): JANUARY 2021
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v4i1.23091

Abstract

This study aims to determine the quality of oil quality that is used repeatedly by frying chicken with the SNI. Bulk oil is used for frying the chicken with 11 frying repetitions. Repetition of oil before frying, repeat 1 time frying up to 10 frying times. Then the oil is tested for water content, Free Fatty Acid (FFA), peroxide value and iodine value. From this study, the quality of cooking oil was obtained for the range of: water content 0.03- 1.04%(w/w), Free Fatty Acids (FFA) 0.39-1.01%(w/w), peroxide value 5,99-18,465 mekO2/kg, iodine value 3.255-3.55 gI2/100g oil. Based on the various tests, the water content up to the oil from frying 3, Free Fatty Acid to oil from frying 3, the peroxide value to frying oil 4 still meets the SNI 01-3741-2013 oil quality standard. And in the iodine value test, all repeated frying results still meet the SNI 01-3741-2013 oil quality standard.
Bioethanol Levels from Corn Cob Waste: Effect of Fermentation Time and Saccharomyces cerevisiae Yeast Amount (Zea mays) Veronika Meiyuina Simatupang; Ramlan Silaban
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 5, No 2 (2022): JULI 2022
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v5i2.37448

Abstract

This study aims to determine the highest levels of bioethanol produced through the fermentation process, by looking at the effect of variations in the amount of Saccharomyces cerevisiae, immobilization, and fermentation time, as well as the effect of the amount of Saccharomyces cerevisiae and fermentation time on the ethanol content produced. The highest ethanol content was 39.5 percent in the bioethanol test, with the amount of Saccharomyces cerevisiae 8 grams and fermentation time of 9 days. The treatment given to the number of immobilized Saccharomyces cerevisiae cells and the length of time of fermentation had a major effect on the ethanol content produced, as shown by Anova.
The effect of bound calorific value and burning rate on biobriquettes from salak skin with starch adhesive Alexander, Irving Josafat; Silaban, Ramlan; Sirait, Gloria
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62255

Abstract

Massive technological development is something that cannot be avoided in this life, because technological development is in line with scientific progress. Indonesia is a country that has abundant energy of various kinds source. Currently, energy use in Indonesia still comes from oil and gas earth, as well as coal which is non-renewable resources. Dependence on energy becomes main problem in energy supply national. Considering the need for it fuel every year continues has increased and is necessary anticipation of the availability of energy sources which is getting thinner while the price fuel oil increases. Every country in the world is now focusing on energy production through non-conventional sources. Biomass is an alternative energy source to replace fossil fuels (oil earth) because it has several beneficial properties, including being able to be utilized economically sustainable because of its renewable nature, no contains sulfur so the biomass does not cause air pollution. Besides being able to reduce waste, if managed properly biomass has high potential to be used as an alternative energy source in the form of biobriquettes. The method used in this research includes the preparation of salak skin raw materials, the carbonisation stage of salak skin, the starch adhesive preparation stage and the salak skin analysis stage, namely the analysis of calorific value and burning rate. Based on the results of the calorific value analysis and combustion rate analysis, it can be concluded that the biobriquette sample of salak skin with starch adhesive has met the provisions of the SNI No. 01-6235-2000 on charcoal biobriquettes. From the results of the study, it was also found that the Biobriket B sample, namely by using adhesive, has a high calorific value and burning rate compared to Biobriket A, namely without using adhesive.
Co-Authors A'in Donasari Abai Manupak Tambunan Afni, Khairul Ajat Sudraja Ajat Sudrajat Ajat Sudrajat Akmalia, Nur Albinus Silalahi Andalia Asmi Anna Juniar Aristo Hardinata Asmi, Andalia Ayi Darmana Bajoka Nainggolan Bajoka Nainggolan Boni Mariska Ratnawati Br Singarimbun, Veronica Liasta Bronika Septiani, Bronika Chintia Dewi Sukri Cintia Fitriani Rumapea Cintia Fitriani Rumapea David Frans Pardamean Sihombing Day Dosmayhot Simaremare Delanining Saragih Deni Rahman Marpaung Devi Anriani Siregar Dewi Susanti Dewi Syafriani Dian I Sinurat Eddiyanto Eddiyanto Effi Nurma Husnitha Eka Kartika Silalahi Elisabet Singarimbun Elsa Ginting Elvana, Ayu Emmi Silvia Herlina Erdiana Gultom Erni Juliani Siregar ESRIDA HUTAHAEAN Ester Manalu Eva Fadillah Evi Irianti Fauziah Fauziah Fauziyah Harahap Fauziyah Harahap FELIA MUTIARA HUTAPEA Freddy T.M. Panggabean Freddy T.M. Panggabean Freddy Tua Musa Panggabean Gloria Sirait Grace Octavia Hutasoit Hasibuan, Desy Rahmayanti Hendro Pranoto Herla Rusmarilin Herry Purwanto Panjaitan Hersakso Sinurat Hery Widijanto Hilda Pratiwi Ida Duma Riris Ida Duma Riris Iis Siti Jahro Iis Siti Jahro Iis Siti Jahro Iis Siti Jahro Iis Siti Jahro Indra Lasmana Tarigan Indrayani, Lisa Inki Yun Lamtiur Irving Josafat Alexander Julia Mardhiya Justinos Ray Nainggolan Juwitaningsih, Tita Khairani Fitri Kiki Ledya Laila Tussifah Lubis Lusyana Rahman Lusyana Rahman Mahmud Mahmud Mahmud Mahmud Mandike Ginting Manihar Situmorang Manihar Situmorang manihar Situmorang, manihar Marham Sitorus Marham Sitorus Marianna E Pasaribu Marianna Pasaribu Marpaung, Fytry Vebiola Martina Asiati Napitupulu Maryam Jamilah Melhyada Veronika Panggabean Melhyada Veronika Panggabean Mhd Burhan Anggara Mira Andriyani Molani Paulina Hasibuan Monalisa Martha Siahaan Moondra Zubir Muhammad Iqbal Mutiara Agustina Nst Nainggolan4, Bajoka Napitupulu, Rahel Ronauli Kurniaasih Nazira, Nirwana Nina Mardiana (F01108057) Nunung Sri Mulyani Nurfajriani Nurfajriani Nur Nurfajriani Nurfajriani Nurfajriani Nurfajriani Nurfajriani Nurfajriani Nurfajriani, Nurfajriani Nurhayani Nurhayani Osi Annauli Br Girsang Pakpahan, Debora Pangondian Hotliber Purba Patricia Rohana Septiana Simarmata Pelita Ananda Sianturi Pelita Ananda Sianturi Purba, Friska Juliana Rabiah Afifah Daulay Rafles Sinaga Rahmadani Renata Hutagalung Retno Dwi Suyanti Retno Dwi Suyatni Rezki Maya Ananda Rini Selly, Rini Riza Manullang Riza Sahala Manullang Rizky Emiliya, Rizky Roselva Theresia Manalu Rosidah, Rosidah Salim Efendi Salim Efendi, Salim Salomo Hutahaen Samosir, Rafidah Almira Sandy Yudha Sandy Yudha Santi Nababan Santri Angelia Damanik Sari, Richa Purmaya Saronom Silaban SARONOM SILABAN Saronom Silaban Sary Marcella Sitompul Sary MF Sitompul Sary MF Sitompul Shinta Rap Sitinjak Simanjuntak, Hendra Simanjutak, Mariati Purnama Simatupang, Lisnawaty Simson Tarigan Sinaga, Rika Nailuvar Sio Tuti Gultom Sitinjak, Shinta Rap Susilo Sudarman Syafruddin Ilyas Tini Sulastri Tini Sulastri Tita Linyan Pardede Trisna W Simanullang Trisna W Simanullang Vera Roni Setiawan Veronika Meiyuina Simatupang Vivi Hutapea Vivi Hutapea Wesly Hutabarat Wesly Hutabarat Wesly Hutabarat, Wesly Wulan Dwi Safitri Yudha, Sandy Yulia Fitri Zainuddin Muchtar Zulfahri, Zulfahri