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All Journal PENA SAINS Science and Technology Indonesia Jurnal Gizi dan Dietetik Indonesia (Indonesian Journal of Nutrition and Dietetics) Jurnal Kimia Terapan Indonesia Fullerene Journal of Chemistry Stannum : Jurnal Sains dan Terapan Kimia Jurnal Sains Indonesia AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Bangun Desa : Jurnal Pengabdian Masyarakat Journal of Pharmaceutical and Sciences.
Muhammad Abdurrahman Munir
Universitas Alma Alta
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Analysis Of Caffeine In Packaged Drinks Using Thin Layer Chromatography (TLC) and Spectrophotometry Method Munir, Muhammad Abdurrahman; Emelda, Emelda; Fatmawati, Annisa; Nurhidayanti, Nurhidayanti
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 1 (2024): April 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i1.4564

Abstract

Caffeine is a natural alkaloid compound found in plants in the leaves, seeds and fruit. The decision of the Food and Drug Supervisory Agency regarding provisions for supervision of supplements in Chapter VIII Article 18 paragraph two states that caffeine levels must not exceed 150 mg/day. The aim of this research was to find out caffeine level in energy beverages. This research method applied the UV-Vis spectrophotometry method and the TLC method. The maximum wavelength obtained in this study was 272.55 nm and the linear results and correlation coefficient obtained were obtained. The linearity value obtained at y= 0.0381x + 0.3285 with the correlation equation R2= 0.9389. Caffeine levels obtained from “brand A” energy drink powder samples for first replicate at 49.59 mg/g, second replicate was 48.78 mg/g, third replicate was 47.15 mg/g, and “brand B” sample for first replicate was 31.5625 mg/g, second replicate at 32.375 mg/g. The caffeine levels obtained in the “brand C” sample from first replicate at 59.43 mg/g, second replicate was 60.28 mg/g, and third replicate was 60.09 mg/g. The results of the standard Rf value for caffeine standard were 0.7, the “brand A” energy drink powder sample was 0.75, the “brand B” sample was 0.75 and the “brand C” was 0.75. The conclusion from this research was that the maximum wavelength was 272.55 nm, which was slightly different from the theoretical maximum wavelength of pure caffeine, namely 273 nm. The caffeine levels obtained for samples of energy drink powder from brands A and B met the requirements because it was <50 mg/package and brand C did not meet the requirements because it was >50mg/package. The Rf value results are satisfactory because they were at range 0.2-0.8.
Pengaruh variasi konsentrasi terhadap uji sifat fisik dan stabilitas freeze- thaw cycling pada formula sediaan gel kombinasi ekstrak daun kelor dan ekstrak daun jeruk nipis Juliana, Intan; Fatmawati, Annisa; Munir, Muhammad Abdurrahman; Emelda, Emelda; Rahmawati, Feti
Journal of Pharmaceutical and Sciences JPS Volume 7 Nomor 1 (2024)
Publisher : Fakultas Farmasi Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/journal-jps.com.v7i1.188

Abstract

Moringa leaves are a major source of antioxidant compounds due to their high content in carotenoids, ascorbic acid, glucosinolates and other bioactives. Lime contains elements of useful chemical compounds, such as alkaloids, polysaccharides, flavonoids, and essential oils. This study aims to obtain a gel formula that is physically stable and stable during storage using the Freeze-Thaw Cycling method from Moringa leaf extract and lime leaf extract. This research is a laboratory experimental research. Gel preparation was carried out with varying concentrations of Moringa leaf extract and lime leaf extract F1 (75%:25%), F2 (50%:50%), and F3 (25%:75%). Testing the physical properties of the gel includes organoleptic, pH, homogeneity, viscosity, spreadability, adhesion and syneresis. The stability test carried out was a stability test using the Freeze-Thaw Cycling method for 3 cycles by observing the stability to be carried out where each cycle observed physical changes in the gel including organoleptic, homogeneity and pH. The results of gel preparations of the combination of ethanol extract of moringa leaves and lime leaves of formulations 1, 2, and 3 with differences in the concentration of the active substance were declared stable, because there was no significant change from organoleptic observations, homogeneity, pH, adhesion and spreadability. However, statistical tests stated that the 4℃ temperature adhesion test obtained a p value (<0.05) and a 40℃ temperature p value (>0.05), while the 4℃ and 40℃ temperature spreadability test obtained a p value (<0. 05).
Penguatan Literasi Membaca, Menulis Dan Minat Belajar Matematika Anak Sekolah Dasar Di Dusun Santan Tahun 2022 Deviana, Alfiana; supriyono, Rachmad Bagas Yahya; Rumbaremata, Audia N; Marsaoly, Chairunisa Ta; Ningtyas, Cahya Retna; Febranti, Fera Erika; Putri, Ika Amalia; Pratama, Joni Yoga; Syafa’ah, Nailus; Ismawati, Nunung; Hidayati, Nur; Supriyono, Yahya; Amanda, Ristia Laura; Sa’adah, Siti Miftahus; Sholihah, Yuanita; Munir, Muhammad Abdurrahman
Bangun Desa: Jurnal Pengabdian Masyarakat Vol 1, No 2 (2022)
Publisher : Universitas Alma Ata

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.644 KB) | DOI: 10.21927/jbd.2022.1(2).51-54

Abstract

Penelitian ini bertujuan untuk meningkatkan kualitas belajar literasi membaca, menulis dan minat belajar matematika. Bimbingan belajar yang dilakukan di Dusun Santan merupakan kegiatan yang di laksanakan untuk meningkatkan kualitas sumber daya manusia sehingga anak peserta didik di Dusun Santan memahami cara membaca, menulis dan minat belajar matematika yang dilakukan di pendopo Dusun Santan. Dengan begitu kemampuan anak peserta didik di Dusun Santan akan semakin lancar dalam membaca, menulis dan minat dalam belajar matematika.Kata Kunci: Penguatan, literasi, santan
Co-Authors Aldilla Sari Utami Allefeti Sandrika Amanda, Ristia Laura Annisa Fatmawati Azizah, Abibatul Badri, Khairiah Haji Badrul, Ahlam Inayatullah Badrul, Hamid Alkhair Deviana, Alfiana Emelda Emelda Emelda Emelda emelda, emelda Emelda, Emelda Fatmawati, Annisa Febranti, Fera Erika Hamid Alkhair Badrul Inayatullah, Ahlam Ira Gusti Riani Ismawati, Nunung Juliana, Intan Khairiah Haji Badri Kusumawardani, Nurul Lee Yook Heng Lee Yook Heng, Lee Yook Marsaoly, Chairunisa Ta Nia Boru Ritonga Ningtyas, Cahya Retna Nur Hidayati Nur Syafitri Nurhidayanti Nurhidayanti Nurhidayanti, Nurhidayanti Pothitirat, Werayut Pratama, Joni Yoga Pratiwi, Sindi Putri, Ika Amalia Rahmawati, Feti Rumbaremata, Audia N Sa’adah, Siti Miftahus Sholihah, Yuanita supriyono, Rachmad Bagas Yahya Supriyono, Yahya Syafa’ah, Nailus Veriani Aprilia Veriani Aprilia