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All Journal CHEMISTRY PROGRESS Jurnal Natur Indonesia Jurnal Sains dan Teknologi JURNAL PIJAR Jurnal Riset Kimia Jurnal Sains Teknologi dan Lingkungan (JSTL) ALCHEMY Jurnal Penelitian Kimia Jurnal Biologi Tropis Asian Journal of Agriculture Jurnal Pijar MIPA Makara Journal of Science Jurnal Pepadu Jurnal Pengabdian Inovasi Masyarakat Indonesia Molekul: Jurnal Ilmiah Kimia Indonesian Journal of Innovation and Educational Technology
Erin Ryantin Gunawan
Chemistry Department FMIPA Universitas Mataram, Jl. Majapahit No. 62 Mataram 83125
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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EDUKASI ANTIOKSIDAN ALAMI DALAM MINYAK NABATI NON PANGAN DI KELOMPOK WANITA PKK DESA BAGIK POLAK LABUAPI LOMBOK BARAT Handayani, Sri Seno; Suhendra, Dedy; Gunawan, Erin Ryantin; Murniati, Murniati; Arlia, Erma
Jurnal Pepadu Vol 5 No 4 (2024): Jurnal PEPADU
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v5i4.5916

Abstract

Antioksidan merupakan zat kimia yang membantu menangkal radikal bebas. Antioksidan alami dalam ditemukan didalam tanaman tertentu dan telah terbukti melindungi sel manusia dari kerusakan oksidatif. Tanaman yang mengandung antioksidan alami dan belum termanfaatkan secara maksimal antara lain adalah kelor, nyamplung dan ketapang. Kegiatan pengabdian ini dilakukan dengan memberikan edukasi kepada ibu-ibu PKK desa Bagik Polak Lombok Barat untuk meningkatkan pengetahuan akan bahaya antioksidan sintetik yang terkandung dalam berbagai sediaan kosmetik. Sumber antioksidan alami dapat diperoleh dari tanaman pangan non komersil. Salah satu tanaman yang dimanfaatkan aktivitasnya sebagai antioksidan yaitu tanaman kelor (Moringa oleifera Lam). Ekstrak daun kelor mempunyai aktivitas antioksidan karena mengandung senyawa flavonoid dan beta karoten. Sedangkan minyak biji kelor mengandung asam-asam lemak yang memiliki aktivitas antioksidan yang baik. Kegiatan pengabdian ini dilaksanakan dalam beberapa tahap, yaitu: (1) Sosialisasi pengetahuan tentang antioksidan, sumber antioksidan dan bahaya dari antioksidan sintetik (2) Pelatihan pembuatan bahan pangan menggunakan sumber antioksidan alami (3) evaluasi hasil kegiatan pengabdian. Ibu-ibu kelompok Wanita PKK sangat antusias dan semangat selama mengikuti kegiatan pengabdian. Kegiatan ini telah memberikan tambahan pengetahuan tentang antioksidan alami dalam minyak nabati non pangan yang berasal dari tumbuhan dan tanaman yang tidak termanfaatkan dengan baik.
Optimization of Biodiesel Synthesis from Kapok Seed Oil (Ceiba pentandra) through Transesterification Reaction with a TiO2 Catalyst Rozitawati, Mona; Gunawan, Erin Ryantin; Suhendra, Dedy; Farida Ariani
Jurnal Pijar Mipa Vol. 20 No. 7 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i7.10514

Abstract

Biodiesel represents a renewable, environmentally friendly, and locally producible alternative to conventional diesel fuel. This research synthesized biodiesel from kapok seed oil (Ceiba pentandra) via transesterification using a TiO₂ catalyst, with process parameters optimized to maximize yield. Kapok seed oil was extracted using Soxhlet extraction with n-hexane and purified by vacuum column chromatography. The transesterification process involved systematic variation of the oil-to-methanol molar ratio, catalyst mass, reaction temperature, and reaction time. Optimal conditions were established at a 1:10 molar ratio, 0.20 g of catalyst mass, a reaction temperature of 60 °C, and a reaction time of 90 minutes, resulting in a biodiesel yield of 71.58%. Characterization of the biodiesel revealed a density of 0.88 g/mL, viscosity of 3.10 cSt, acid value of 1.89 mg NaOH/g, and saponification value of 231.879 mg KOH/g. GC-MS analysis identified methyl palmitate, methyl linoleate, and methyl oleate as the principal methyl ester components, with methyl oleate as the predominant species. These findings demonstrate that biodiesel derived from kapok seed oil possesses properties suitable for use as an alternative fuel that meets established quality standards.
Students’ Knowledge Profile of Sasambo Medicinal Oil in the Phytochemistry Course Listantia, Nora; Jufri, A. Wahab; Gunawan, Erin Ryantin; Gunawan, Gunawan; Rokhmat, Joni; Sukarso, A. A.
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10972

Abstract

Sasambo Medicinal Oil is a local wisdom–based product from West Nusa Tenggara (NTB) that utilizes medicinal plants such as lemongrass, ginger, turmeric, eucalyptus, and various other ethnopharmaceutical species. In the context of phytochemistry learning, the use of this oil serves as a relevant medium for connecting the concept of secondary metabolites with the practical application of natural-product utilization. This study aims to describe the knowledge profile of students regarding Sasambo medicinal oil as a cultural heritage product that possesses significant phytochemical potential and economic value, as well as its contribution to enhancing scientific literacy. Students’ understanding of the components, benefits, and preparation processes of this traditional medicinal oil is essential to develop within chemistry education based on local wisdom. The research employed a descriptive quantitative method using closed-ended questionnaires and interviews as instruments. The research subjects consisted of 52 students from the Chemistry Education Study Program at the University of Mataram. The findings show that 73% of students have general knowledge about Sasambo oil, yet only 38% understand its chemical composition and pharmacological mechanisms. Students’ conceptual and procedural knowledge falls within the moderate category (average score of 65.2%), while the applicative aspect remains low (54.1%). These results indicate the need to strengthen scientific literacy and integrate local wisdom into applied chemistry and phytochemistry learning, thereby improving students’ conceptual understanding and awareness of the scientific and sustainable utilization of natural resources.
Optimization of the epoxidation reaction of Calophyllum inophyllum oil-based epoxy Suhendra, Dedy; Sudirman, Sudirman; Murniati, Murniati; Handayani, Sri Seno; Iswari, Ni Kadek Suardani; Gunawan, Erin Ryantin
Molekul Vol 21 No 1 (2026)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2026.21.1.12176

Abstract

ABSTRACT. Epoxy is synthesized through an epoxidation reaction, namely the oxidation of double bonds by active oxygen to form an oxirane ring. Generally, epoxy is synthesized from petroleum-derived raw materials which are non-renewable energy sources. Vegetable oils which contain unsaturated bonds can be used as alternative raw materials for producing epoxy. In this research, Calophyllum inophyllum oil (the local name is nyamplung), which is a non-edible and non-commercial vegetable oil, was used as a feedstock in the preparation of epoxy. Epoxidation takes place in situ, namely performic acid which reacts with nyamplung oil is produced from the reaction between HCOOH and H2O2, and is catalyzed by sulfuric acid simultaneously. The indicators in this epoxidation reaction are the oxirane oxygen content (OOC) and the relative conversion to oxirane (RCO). The optimum epoxidation conditions obtained are duration of epoxidation of 6 h, ratio of oil:HCOOH:H2O2 is 1:3:4 (mole/mole), and epoxidation temperature of 45 °C. The product was characterized using FTIR and NMR. Keywords: Calophyllum inophyllum oil; epoxidation; epoxy; oxirane oxygen content
Variations of Science Learning Teaching Aids Using Kits and Sensors: A Systematic Literature Review Septiawan, Bayu; Gunawan, Gunawan; Gunawan, Erin Ryantin
Indonesian Journal of Innovation and Educational Technology Vol. 1 No. 1 (2026): Edisi Januari-Juni 2026
Publisher : Indonesian Publication Center

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The rapid development of science and technology requires science learning to focus not only on conceptual understanding but also on the development of science process skills, critical thinking, and technological literacy. One approach to addressing this challenge is the use of science learning teaching aids based on kits and sensors. This study aims to systematically review the variations of science teaching aids developed and implemented in previous studies, focusing on the types of kits and sensors, science domains, and their impact on students’ learning outcomes. This research employed a literature review method using a systematic literature review approach. Relevant articles were identified through Google Scholar and ResearchGate databases. A total of 25 selected articles were analyzed descriptively based on tool characteristics, applied technologies, and key research findings. The results indicate that kit- and sensor-based teaching aids, particularly those integrating microcontrollers and digital sensors, significantly enhance students’ conceptual understanding, science process skills, and higher-order thinking skills. Furthermore, these teaching aids effectively support experiment-based, inquiry-oriented, and STEM learning approaches. Therefore, science learning teaching aids based on kits and sensors demonstrate strong potential as innovative and contextual tools to improve the quality of science education.
Biodiesel Synthesis of Cotton Seeds Oil (Ceibapentandra) By Chemically Transesterification Process and Ion Fragmentation of Methyl Ester Gunawan, Erin Ryantin; Wulandari, Siska Ayu; Yuanita, Emmy; Suhendra, Dedy
ALCHEMY Jurnal Penelitian Kimia Vol 10, No 2 (2014): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.10.2.528.104-115

Abstract

Fossil  fuel  is  commercial  energy  sources  in  many  communities  where  their abundance  progressively  reduced  and  the  resulting  environmental  pollution.  Biodiesel  is one alternative fuel made  from vegetable  which oils are suitable to replace the function of fossil fuels and environmentally friendly. Synthesis of biodiesel from  cotton  seeds oil  was carried  out  by  chemically  ransesterification  process.  Composition  of  methyl  esters  in biodiesel  thatwas  analyzed  by  GC-MS  are  methyl palmitate  (16.71%),  methyl  8,11-octadecadienoic (46.45 %) and  methyl linoleate (4.21  %).The highest amount of  biodiesel conversion  isat  ratio of oil and  methanol (1:1)  with  the catalyst 1% (weight  of oil).  The produced biodiesel was 93.7  %.  Chemical properties of  the produced  biodiesel meets the standard SNI 04-7182-2006 i.e.  saponification value of  120.167    mg KOH / g, acid value of 0.28 mg KOH / g and iod value 55.84g iod/100g of sample.
Co-Authors 'Ardhuha, Jannatin A. Wahab Jufri A.A. Ketut Agung Cahyawan W Adiguna, Sya’ban Putra Agus Abhi Purwoko Ali Djamhuri Anggi Solehah Arlia, Erma Azumi, Baiq Miftah Balafif, Ragaya Abd. R Bali, Rizka Dhia Khalilah Basri, Nurul Hasan Dedy Suhendra Diah Miftahul Aini Dina Asnawati Emmy Yuanita Emmy Yuanita Erin Ryantin Gunawan Faradis, Taritsu Hazal Farida Ariani Gunawan Gunawan Iswari, Ni Kadek Suardani Izzati, Assifa Joni Rokhmat Lalu Haris Budiarto, Lalu Haris LALU RUDYAT TELLY SAVALAS Lely Kurniawati Lilik Mariana Listantia, Nora Mahiran Basri Murniati Murniati . Murniati Murniati Nurhidayanti . Pomeistia, Meilynda Qurba, Pujana Ragaya Abd. R. Balafif Rahmiati Rahmiati Ramdani, Nanila Rischia, Amida Rozitawati, Mona Saputri, Dita Ayu Sari, Gita Sagita Septiawan, Bayu Siska Ayu Wulandari, Siska Ayu Sri Seno Handayani Sri Seno Handayani Sudirman Sudirman Sukarso, A. A. Sukiman Sukiman Suriadi . Suriadi Suriadi Usiana, Shilan Yanti, Sepia Dwi Yayuk Andayani Zaer, Ziana