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Produksi Energi Listrik dari Limbah Kulit Pisang (Musa paradisiaca L.) Menggunakan Teknologi Microbial Fuel Cells dengan Permanganat sebagai Katolit Lisa Utami; Lazulva Lazulva; Yuni Fatisa
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 5, No 2 (2018): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v5i2.3833

Abstract

Penelitian ini bertujuan untuk mempelajari bagaimana potensi biomassa yang tidak termanfaatkan yaitu limbah kulit pisang sebagai sumber energi listrik menggunakan teknologi Microbial Fuel Cell (MFC). Pengamatan dilakukan terhadap reaktor bejana yang didesain dengan dua chamber (anoda dan katoda) menggunakan KMnO4 sebagai katolit dan dihubungkan dengan rangkaian sel elektrokimia (sel volta) kemudian diukur nilai tegangan, arus, power density yang dihasilkan dari rangkaian limbah kulit pisang selama 17 hari. Hasil pengukuran nilai tegangan maksimum, arus maksimum dan power density maksimum yang dihasilkan dari reaktor didapatkan berturut-turut sebagai berikut : 1.455 volt; 0,032 miliampere; dan 31,9 mW/m2. Limbah kulit pisang dapat digunakan untuk memproduksi arus listrik..
BIFOWREN ( Bioethanol From Organic Waste As Renewable Energy) : Review Pemanfaatan Berbagai Macam Limbah Organik Menjadi Bioetanol Lazulva LAZULVA, LAZULVA; Fatisa, Yuni; Adrina, Putri; Mardhiah
Journal of Research and Education Chemistry Vol. 6 No. 2 (2024): Oktober
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jrec.2024.vol6(2).17325

Abstract

Abstrak Seiring dengan meningkatnya kebutuhan hidup manusia maka semakin banyak pemanfaatan sumber daya alam bahan bakar fosil. Pemanfaatan bahan bakar fosil dapat meningkatkan emisi gas di atmosfer dan pemanasan global. Hal inilah yang mendorong banyak penelitian mencari sumber bahan bakar alternatif, seperti bioetanol. Artikel ini disusun untuk mengetahui potensi pemanfaatan limbah organik melalui proses fermentasi untuk menghasilkan bioetanol, khususnya membahas peran mikroorganisme, kondisi dan metode fermentasi bioetanol yang optimal. Metode penulisan yang digunakan adalah literature review berdasarkan analisa yang dilakukan pada berbagaisumber literature. Metode Solid State Fermentasi (SSF) merupakan metode yang paling sering digunakan dan menghasilkan konsentrasi bioetanol yang cukup tinggi, dari analisa yang dilakukan kondisi optimum untuk memproduksi bioetanol dari kulit buah berada pada kisaran pH 4,5-6, dan kisaran waktu fermentasi 24-120 jam, pada sumber organik lain (seperti limbah nasi basi, limbah air cucian beras, limbah popok bayi, limbah sayuran rumah tangga dan lain-lain) adalah pH 4,6-6, dan 35-130 jam. Kadar bioetanol terbaik terdapat pada produksi bioetanol dari limbah kulit onggok yaitu sebesar 92% melalui penambahan starter dan waktu fermentasi 7 hari. Bioetanol dari limbah kulit onggok ini yang berpotensi lebih lanjut untuk menjadi campuran bahan bakar bensin agar dapat mengurangi penggunaan bahan bakar fosil, selain itu bioetanol dari limbah kulit onggok ini juga dapat dimanfaatkan oleh industri farmasi, industri minuman beralkohol dan desinfektan. Kata Kunci : Bioetanol, Limbah Organik, EBT, Manfaat. Abstract Along with the increasing needs of human life, more and more utilization of natural resources of fossil fuels. The utilization of fossil fuels can increase gas emissions in the atmosphere and global warming. This is what encourages many studies to look for alternative fuel sources, such as bioethanol. This article was prepared to determine the potential utilization of organic waste through the fermentation process to produce bioethanol, specifically discussing the role of microorganisms, conditions and optimal bioethanol fermentation methods. The writing method used is literature review, based on the analysis conducted on various sources of literature, solid state fermentation (SSF) method is the most frequently used method and produces a fairly high concentration of bioethanol, from the analysis conducted the optimum conditions for producing bioethanol from fruit peels are in the range of pH 4, 5-6, and the range of fermentation time 24-120 hours, on other organic sources (such as stale rice waste, rice washing water waste, baby diaper waste, household vegetable waste and others) is pH 4.6-6, and 35-130 hours with the best bioethanol content is found in the production of bioethanol from onggok skin waste which is 92% through the addition of starter and fermentation time of 7 days. Bioethanol from onggok skin waste has further potential to be a mixture of gasoline fuel in order to reduce the use of fossil fuels, besides that bioethanol from onggok skin waste can also be utilized by the pharmaceutical industry, alcoholic beverage industry and disinfectants. Keywords: Bioethanol, Organic Waste, Renewable Energy, Benefits
- DESAIN DAN UJI COBA VIDEO PRAKTIKUM SEL VOLTA BERBASIS STREAM (SCIENCE, TECHNOLOGY, RELIGION, ENGINEERING, ART, AND MATHEMATICS): - Ramanda Putri, Dewi; Fitri Refelita; Yuni Fatisa; Zona Octarya
Journal of Research and Education Chemistry Vol. 6 No. 2 (2024): Oktober
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jrec.2024.vol6(2).19003

Abstract

Abstrak Penelitian ini dilatarbelakangi oleh fakta bahwa kimia seringkali dianggap sebagai ilmu yang kompleks dan abstrak, sehingga dibutuhkan pembuktian dan visualisasi yang jelas. Tujuan dari penelitian ini adalah untuk mengetahui bentuk desain video praktikum sel volta berbasis STREAM, serta untuk mengetahui tingkat validitas dan praktikalitas dari media ini. Metode penelitian yang digunakan adalah Research and Development (R&D) dan model Design, Development, Research (DDR). Tahapannya antara lain analisis (analysis), desain (design), pengembangan (development), dan evaluasi (evaluation). Penelitian ini dilakukan di SMA Al-Huda Pekanbaru. Lembar wawancara, angket uji validitas materi dan media, angket praktikalitas guru, dan angket uji respon siswa merupakan intrumen pengumpulan data pada penelitian ini. Hasilnya adalah 93,3% untuk tingkat validitas materi, 100% untuk tingkat validitas media, 93,3% untuk tingkat praktikalitas guru dengan kriteria sangat praktis, dan 97,83% untuk hasil uji respon siswa dengan kriteria sangat menarik. Maka dapat disimpulkan bahwa video praktikum sel volta berbasis STREAM (Science, Technology, Religion, Engineering, Art, and Mathematics) sangat layak digunakan dalam kegiatan pembelajaran. Kata kunci : DDR, Video Praktikum, STREAM, Sel Volta Abstract This research was instigated with the fact that chemistry is often considered as a complex and abstract science, so clear proof and visualization is needed. This research aimed at finding out STREAM (Science, Technology, Religion, Engineering, Art, and Mathematics) based voltaic cells practical work video design form, and finding out validity and practicality levels of this medium. It was Research and Development with Design, Development, Research (DDR) model. The steps were analysis, design, development, and evaluation. This research was conducted at Senior High School of Al-Huda Pekanbaru. Interview sheet, material and media validation test questionnaire, teacher practicality questionnaire, and student response test questionnaire were the instruments of collecting data. The results were 93.3% for material validity level, 100% for media validity level, 93.3% for teacher practicality level with very practical criteria, and 89.83% for student response test result with very interesting criteria. So, it could be concluded that STREAM based voltaic cells practical work video was very appropriate to be used in learning activities. Keywords : DDR, Practical Work Video, STREAM, Volta Cells
PENGEMBANGAN E-MODUL PENGOLAHAN LIMBAH ORGANIK SECARA ECO-ENZYME PADA MATERI GREEN CHEMISTRY UNTUK SISWA SMA KELAS X Siagian, Nova Lestari; Yusbarina, Yusbarina; Utami, Lisa; Fatisa, Yuni
Journal of Chemistry Education and Integration Vol 3, No 2 (2024): Journal of Chemistry Education and Integration
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jcei.v3i2.32310

Abstract

AbstractGreen Chemistry is a new lesson in Merdeka Curriculum, so students and teachers need additional teaching materials used to support the learning process.  This research aimed at designing and testing e-module for processing organic waste by making eco-enzymes on Green Chemistry lesson, and it was tested its validity based on validation by material and media experts, teacher practicality test, and student response test.  Design and Development Research (DDR) model was used in this research.  This research was administered at the tenth grade of class 1 at State Senior High School 5 Pekanbaru.  The validation result by material expertsshowed that the score was 98.63% with very valid category, the validation result by media experts showed that the score was 95.51% with very valid category, the teacher practicality test result showed that the score was 95.83% with very valid category, and the student response practicality test result showed that the score was 83.11% with very valid category.  Based on the validation and practicalityresults obtained, it could be concluded that e-module for processing organic waste by making eco-enzymes on Green Chemistry lesson was appropriate to be test as an additional teaching material in Chemistry learning.Keywords: E-Module, Processing Organic Waste, Eco-Enzyme, Green Chemistry
ANALISIS KEMAMPUAN PSIKOMOTORIK SISWA PADA PRAKTIKUM KIMIA LAJU REAKSI Fadhel, Muhammad; Fatisa, Yuni; Octarya, Zona
Journal of Chemistry Education and Integration Vol 3, No 2 (2024): Journal of Chemistry Education and Integration
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jcei.v3i2.32322

Abstract

AbstractPractical work as a form of learning activity is also part of a series of learning processes.  This research aimed at analyzing student psychomotor abilities in practical work on Reaction Rate lesson.  This research was carried out in the Academic Year of 2023/2024 at State Islamic Senior High School 2 Kampar on Reaction Rate lesson.  Quantitative descriptive method was used in this research. Purposive sampling was used in this research. The techniques of collecting data in this research were working assessment sheet, documentation, and interview to strengthen the data obtained.  The results of data analysis showed that the mean score of student psychomotor abilities was 72.37% with good category.  The highest mean score obtained was Creating indicator with the score 81.66% on good category, and the psychomotor ability with the lowest mean score was Manipulating indicator with the score 62.77% on good category.  The psychomotor sub-indicator with the highest mean score was Returning the practical work equipment with the score 100% on very good category, and the psychomotor sub-indicator with the lowest mean score was Delivering the practical work results with the score 47.91% on sufficient category.  Practical work learning could develop process skills, psychomotor skills, and scientific attitudes.Keywords: Psychomotor Abilities, Practical Work, Reaction Rate
ANALISIS BERPIKIR KREATIF SISWA MELALUI PENERAPAN MODEL PROBLEM BASED LEARNING (PBL) BERBASIS SOCIO SCIENTIFIC ISSUE (SSI) PADA MATERI LARUTAN PENYANGGA Fadila Zamri, Haura; Yuni Fatisa; Utami , Lisa
UNESA Journal of Chemical Education Vol. 14 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ujced.v14n1.p66-72

Abstract

Penelitian ini dilatarbelakangi oleh kebutuhan pembelajaran abad ke-21 yang mengharuskan siswa memiliki berbagai keterampilan, diantaranya kemampuan berpikir kreatif. Namun, dalam mengembangkan ide kemampuan berpikir kreatif siswa masih terbatas karena cenderung mengandalkan informasi dari buku dan ponsel. Model pembelajaran yang dipakai untuk memunculkan kemampuan berpikir kreatif adalah Problem Based Learning (PBL) berbasis Socioscientific Issues (SSI). Penelitian ini bertujuan untuk menganalisis kemampuan berpikir kreatif siswa melalui penerapan model PBL-SSI pada materi larutan penyangga. Metode penelitian ini adalah deskriptif kuantitatif dengan jenis pre-eksperimental dan desain one-shot case study. Sampel dipilih menggunakan tekhnik cluster sampling, dengan kelas XI MIPA 5 sebagai sampel penelitian yang terdiri dari 34 siswa. Data kemampuan berpikir kreatif siswa diambil melalui tes esai dan observasi yang dianalisis untuk mengidentifikasi tingkat kemampuan berpikir kreatif siswa. Hasil tes esai menunjukkan bahwa indikator berpikir orisinal memiliki persentase terendah dengan kategori cukup sebesar 59,5%, diikuti oleh indikator berpikir lancar dengan kategori baik sebesar 66,2%, berpikir rinci dengan kategori baik sebesar 73,5%, dan berpikir luwes dengan kategori baik sebesar 79%. Dengan demikian, model PBL-SSI terbukti efektif meningkatkan kemampuan berpikir kreatif siswa, khususnya indikator berpikir luwes.
DESAIN DAN UJI COBA E-MODUL KIMIA BERBASIS GUIDED DISCOVERY LEARNING PADA MATERI STRUKTUR ATOM Salsabila, Refina; Ardiansyah, Ardiansyah; Fatisa, Yuni; Mahartika, Ira
Konfigurasi : Jurnal Pendidikan Kimia dan Terapan Vol 9, No 1 (2025)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/konfigurasi.v9i1.36066

Abstract

This research was instigated with Guided Discovery Learning based e-module learning medium that was not yet available to assist teachers in explaining learning material.  This research aimed at producing a learning medium, finding out validity and practicality levels of Guided Discovery Learning based chemistry e-module developed on Atomic Structure lesson.  It was Research and Development (R&D) with Design & Development (DDR) model.  The subjects of this research were 10 the eleventh-grade students of class 1 at Senior High School of Muhammadiyah 1 Pekanbaru, 2 Chemistry subject teachers, a media expert lecturer, and a material expert lecturer.  Questionnaire and interview were the techniques of collecting data.  The research findings showed Guided Discovery Learning based e-module on Atomic Structure lesson that the validity percentages obtained from media and material experts respectively were 87.5% and 98.5% with very valid criteria.  The percentage of teacher practicality test was 82.5% with very practical criteria, and the result of student response test was 82.7% with very good criteria
Review: Aktivitas Antioksidan Daun Kelor (Moringa Oleifera) Fatisa, Yuni; Fitri, Anggun Delia; Apruri, Azzahra Bellucci; Octarya, Zona
Photon: Jurnal Sain dan Kesehatan Vol. 15 No. 2 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v15i2.6675

Abstract

Free radicals are generated in the human body from normal metabolic processes. Apart from that, environmental factors such as UV, infrared and visible light, environmental pollution, including ozone and particulate matter and oxidative stress. The antioxidant system in the body is responsible for neutralizing or reducing the impact of free radicals in the body. If these free radicals exceed the body's antioxidant capacity, it will result in oxidative stress. There are many natural alternatives to ward off free radicals, one of which is Moringa leaves. Moringa leaves (Moringa oleifera) are found in many tropical regions, one of which is Indonesia, where they have high antioxidant activity. The method used is a literature study which is reviewed one by one, after which the journals obtained are collected and the information is compiled by summarizing the contents of the journals used as sources. This article focuses on reviewing antioxidant phytochemical compounds and the level of antioxidant activity contained in Moringa leaves. The antioxidant compounds that are abundant in Moringa leaves are a group of flavonoid compounds, namely quercetin and kaempferol. The results showed that the highest antioxidant activity.
A Novel Benzenesulfonylurea-Substituted Pyridazinone Derivative with Antidiabetic Effect as the Peroxisome Proliferator-activated Receptor (PPAR-γ) Agonist Fatisa, Yuni; Yasthophi, Arif; Elviyenti, Elviyenti; Ikhtiaruddin, Ihsan; Frimayanti, Neni; Teruna, Hilwan Yuda; Jasril, Jasril
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 1, May 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i1.42187

Abstract

Peroxisome Proliferator-activated Receptor (PPAR-γ) protein is one of the target proteins for insulin sensitivity therapy in Type 2 DM. PPAR-γ has a key role as a nuclear receptor that regulates the expression of several metabolism-related genes. This research aims to   synthesize a novel   benzenesulfonylurea-substituted   pyridazinone     derivative, namely (E)-N'-(1-(4-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)- yl)phenyl)ethylidene)-4-methylbenzenesulfonohydrazide (8) and predicted it activity as the PPAR-γ agonist using a molecular docking approach and ADMET profiles. The compound 8 was obtained through a Schiff base condensation reaction between compound 6, p-tosyl hydrazine, and a glacial acetic acid catalyst using monowave. The purity of the compound was determined by TLC test, and melting point measurement. The structure was confirmed through FTIR, 1H-NMR, C-NMR and HRMS analysis. Molecular docking studies were carried out on the crystal structure of the human PPAR-γ Ligand Binding Domain target protein in complex with the α-aryloxyphenyl acetic acid agonist (PDB ID 1ZEO). The results of the docking show that compound 8 has a lower binding free energy than rosiglitazone (positive control) with a free energy value (S score) = -13.513 kcal/mol and -8.3089 kcal/mol, respectively. Compound 8 can form two hydrogen bonds with residues His323 and Ser289, π-π interactions with Phe363 and π-H interactions with Cys285.  The interactions are similar to the interaction between the native ligand agonists α-aryloxyphenyl acetic acid and rosiglitazone with the target protein. Furthermore, compound 8 is predicted to have a moderate ADME profile. The results support that compound 8 can be developed as a PPAR-γ agonist candidate for the antidiabetic therapeutic agent.
Potensi Pengembangan Antioksidan/Antidiabetes Turunan Piridazinon sebagai Agen yang Menjanjikan untuk Terapi Penyakit Diabetes: Review Fatisa, Yuni; Frimayanti, Neni; Teruna, Hilwan Yuda; Jasril , Jasril
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol. 17 No. 1 (2025): Jurnal Farmasi Indonesia
Publisher : Pengurus Pusat Ikatan Apoteker Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35617/jfionline.v17i1.390

Abstract

Hiperglikemia dapat menginduksi stress oksidatif yang dapat berkembang kearah patogenesis komplikasi diabetes. Strategi pengobatan biasanya menggunakan obat antidiabetes dan antioksidan untuk membantu mengelola diabetes pada pasien. Penemuan obat dengan sifat dual aktivitas akan bekerja pada dua target sekaligus dan dapat meminimalkan efek samping. Review ini bertujuan untuk menganalisis potensi pengembangan agen baru antidiabetes dan antioksidan dari senyawa turunan piridazinon. Metodologi studi literatur review menggunakan teknik Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA). Pencarian database elektronik dilakukan melalui Google Scholar, PubMed, dan Science Direct untuk mendapatkan literatur-literatur yang relevan sampai tahun 2024. Kriteria inklusi adalah turunan piridazinon sebagai antidiabetes dan antioksidan menggunakan uji in silico, in vitro, dan in vivo. Sebanyak 24 jurnal original research telah dianalisis untuk pembahasan review ini. Hasil review menemukan bahwa senyawa turunan piridazinon berpotensi sebagai inhibitor α-Glukosidase, antihiperglikemik, dan inhibitor aldosa reduktase dengan tingkat aktivitas sedang-kuat. Beberapa studi juga menemukan bahwa turunan piridazinon bersifat antioksidan. Hasil ini didukung oleh hasil prediksi melalui studi pendekatan molecular docking. Terdapat hubungan yang erat antara gugus-gugus aktif terikat cincin piridazinon dengan kekuatan efek farmakologisnya. Namun, hanya ada dua studi yang melaporkan turunan piridazinon yang memiliki sifat antidiabetes dan antioksidan sekaligus. Review ini membuka peluang untuk potensi pengembangan turunan piridazinon dengan dual bioaktivitas. Selain itu, penelitian lebih luas dan dalam dengan modifikasi struktur turunan piridazinon sebagai kandidat agen terapi bagi pasien diabetes perlu dilanjutkan.