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All Journal HAYATI Journal of Biosciences SAINSMAT KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman Jurnal Penelitian Pendidikan IPA (JPPIPA) Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Eksakta : Berkala Ilmiah Bidang MIPA Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Inovasi Pendidikan dan Sains Unram Journal of Community Service (UJCS) Pakem : Jurnal Pengabdian Kepada Masyarakat Molekul: Jurnal Ilmiah Kimia Innovation for Community Service Journal SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Gaspersz, Nelson
Universitas Pattimura, Indonesia
Agriculture, Biological Sciences & Forestry Arts 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 Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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PENGENALAN PRAKTIKUM KIMIA SEDERHANA UNTUK SISWA SMA NEGERI 45 MALUKU TENGAH Pada, Semuel Simra; Siahaya, Anto Netty; Souhoka, Fensia Analda; Gaspersz, Nelson
PAKEM : Jurnal Pengabdian Kepada Masyarakat Vol 5 No 2 (2025): Pakem : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/pakem.5.2.192-199

Abstract

This community service aims to improve the quality of chemistry learning at SMA Negeri 45 Maluku Tengah, which has limited laboratory facilities. The majority of students come from farming and fishing families, offering potential for integrating local natural resources into contextual learning. The main challenge for the school is the scarcity of practical tools and materials, leading to difficulties for students in understanding abstract chemical concepts and reducing their interest in learning. Based on these issues, community service activities were designed to introduce simple laboratory tools and materials and develop students' experimental skills. The methodology included preparing materials and equipment (glassware, common reagents), forming a mentoring team consisting of chemistry lecturers and students, socializing the activities, conducting direct practical sessions in small groups with demonstrations, as well as analyzing results and discussions. The results showed an improvement in students' understanding and interest through active participation in practical sessions on introducing glassware, acid-base titration, hydrogen gas formation, and carbon dioxide gas identification tests. Direct observation and question-and-answer sessions indicated that students were able to understand the function of tools, perform titrations correctly, observe chemical reactions, and identify gases. The evaluation demonstrated the program's effectiveness in enhancing students' understanding and practical skills, bridging the theory-practice gap, and fostering interest in chemistry learning
PENGARUH LAMA PENYIMPANAN EKSTRAK KASAR MAKROALGA Ulva lactuca TERHADAP KESTABILAN PIGMEN FOTOSINTESIS Nurani Hasanela; Nelson Gaspersz; Rosita Silaban; Mario Rowan Sohilait
Jurnal Inovasi Pendidikan dan Sains Vol 1 No 3 (2020): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

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Abstract

Banyak kandungan senyawa kimia bermanfaat dalam makroalga yang bernilai ekonomi tinggi tetapi belum diteliti secara luas, seperti pigmen fotosintesis. Peningkatan kebutuhan pigmen fotosintesis pada dunia industri menyebabkan pencarian sumber alternatif pigmen fotosintesis masih terus dilakukan diantaranya dari makroalga. Penelitian ini bertujuan untuk mengetahuipengaruh lama penyimpanan ekstrak kasar makroalga Ulva lactuca terhadap kestabilan pigmen fotosintesis. Tahapan penelitian meliputi, isolasi pigmen fotosintesis, pemurnian menggunakan kromatografi kolom silika, karakterisasi pigmen fotosintesis dengan KLT dan spektrofotometer UV–Vis. Hasil KLT dari ekstrak kasar Ulva lactuca menunjukkan perbedaan jumlah dan jenis pigmen fotosintesis yang mencolok antara ekstrak kasar Ulva lactuca yang lansung diekstrak dan yang dibiarkan kurang lebih 3 hari. Pada hasil kromarogram menunjukkan ada 7 fraksi pigmen fotosintesis dan memiliki warna yang sangat mencolok yang diekstrak secara langsung sedangkan ekstrak kasar yang dibiarkan kurang lebih 3 hari menunjukkan hanya 5 fraksi pigmen fotosintesis dengan warna yang pucat. Fraksinasi dengan kromatografi kolom silika gel menunjukkan adanya pigmen fotosintesis sebanyak 29 fraksi. Setelah diindentifikasi dengan spektofotometer UV–Vis ada 4 fraksi utama yaitu ß-karoten, fukoxantin, klorofil a,dan feofitin a. Lama penyimpanan terhadap ekstrak kasar Ulva lactuca mempengaruhi pigmen fotosintesis secara kualitatif dan kuantitatif.
PENGENALAN TEKNOLOGI PRODUKSI KACANG TANAH SANGRAI UNTUK INDUSTRI RUMAH TANGGA DI DESA UWEN PANTAI, KECAMATAN TANIWEL TIMUR, SERAM BAGIAN BARAT Nelson Gaspersz; Priska Marisa Pattiasina; Shielda Natalia Joris
PAKEM: Jurnal Pengabdian Kepada Masyarakat Vol 6 No 2 (2026): Pakem : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/pakem.6.2.193-203

Abstract

Maluku possesses substantial agricultural potential, particularly in peanut cultivation, which is extensively practiced in Uwen Pantai Village, East Taniwel Sub-district, West Seram Regency. Groundnut cultivation thrives due to favorable land conditions, minimal maintenance requirements, and relatively short harvest cycles of 3–4 months. The competitive market price positions peanuts as a promising commodity for enhancing community welfare. However, current peanut production and marketing practices remain predominantly traditional, operating at limited scales without adherence to market standards. This community empowerment program aims to enhance local capacity in roasted peanut processing through the introduction of modified rotating sand roaster technology. Employing a transformative learning approach, community members receive comprehensive training in technology application and market-oriented business management. The modified rotating sand roaster features innovative blunt blades positioned strategically within the sample tube to facilitate uniform heat distribution, ensuring consistent product quality with distinctive roasted flavor and aroma. The program encompasses socialization activities, participatory training, technology application, and continuous mentoring in production, packaging, and marketing. Initial implementation results demonstrate significant improvements: production capacity increased from small batches to 5–10 kg per cycle (2–3 hours), product packaging advanced from plain plastic to full-color labeled aluminum foil, and profit margins reached 84.48%. This initiative is expected to improve product quality and competitiveness, expand market access, facilitate business legalization, and ultimately contribute to post-pandemic economic recovery in Uwen Pantai Village.Abstract A maximum of 250 Indonesian words printed in italics with Cambria 10 point. The abstract should be clear, descriptive and should provide a brief overview of community service issues undertaken / researched. Abstracts include reasons for the selection of topics or the importance of research topics / community service, methods of research / devotion and outcome summary. The abstract should end with a comment about the importance of the result or a brief conclusion.
Pelatihan Pembuatan Kecap dari Air Kelapa kepada Ibu-Ibu PKK Negeri Hatusua Rahayu Rahayu; Catherina Manukpadang Bijang; Antho Netty Siahaya; Mario Sohilait; Nelson Gaspersz
Innovation for Community Service Journal Vol 3 No 2 (2025): Oktober 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i2.22588

Abstract

Kegiatan pengabdian kepada masyarakat yang diselenggarakan oleh Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura bertujuan untuk memberikan edukasi kepada masyarakat Negeri Hatusua mengenai inovasi pembuatan kecap manis berbahan dasar air kelapa sebagai alternatif pangan yang lebih sehat dan ramah bagi tubuh. Inovasi kecap berbasis air kelapa ini tidak hanya menghadirkan pilihan yang lebih sehat, tetapi juga membuka peluang pengembangan produk lokal yang berkelanjutan. Kegiatan dilaksanakan pada 15 Mei 2024 di Negeri Hatusua dan diikuti oleh ibu-ibu PKK setempat. Metode pelaksanaan meliputi workshop pembuatan kecap menggunakan air kelapa sebagai bahan utama. Produk hasil pelatihan kemudian dikemas dalam botol steril dan diberi label “Kecap Negeri Hatusua”, yang selanjutnya diserahkan kepada Ketua PKK Negeri Hatusua. Proses pengolahan ini merupakan upaya inovatif dalam memanfaatkan limbah yang terdapat di lingkungan sekitar masyarakat. Selain itu, penerapan teknologi pengolahan dan pengemasan yang baik dan benar dilakukan agar produk yang dihasilkan memiliki daya tarik konsumen, nilai jual yang lebih tinggi, serta potensi untuk dikembangkan secara komersial.
Inovasi Pengolahan Limbah Air Kelapa menjadi Cuka Kelapa sebagai Upaya Peningkatan Ekonomi Lokal di Desa Oma, Pulau Haruku, Maluku Tengah Nelson Gaspersz; Yusthinus Tobias Male; Adriani Bandjar; Serly Jolanda Sekewael; Eirene Grace Fransina; Stephanie Pascal Sohilait
Innovation for Community Service Journal Vol 3 No 2 (2025): Oktober 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i2.22895

Abstract

Maluku memiliki potensi sumber daya alam yang melimpah, salah satunya kelapa yang banyak tumbuh di wilayah pesisir seperti Desa Oma, Kecamatan Pulau Haruku, Kabupaten Maluku Tengah. Selama ini, masyarakat hanya memanfaatkan daging buah kelapa untuk konsumsi rumah tangga, sedangkan air kelapa sering dibuang sebagai limbah. Padahal, air kelapa mengandung karbohidrat yang dapat diolah menjadi produk bernilai ekonomi seperti cuka kelapa melalui proses fermentasi. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberdayakan masyarakat Desa Oma, khususnya kelompok ibu-ibu PKK, dalam meningkatkan nilai ekonomis limbah air kelapa melalui pelatihan pembuatan cuka kelapa dengan teknologi tepat guna. Metode pelaksanaan meliputi penyuluhan, diskusi kelompok (FGD), serta pelatihan teknis pembuatan cuka kelapa dengan fermentasi anaerob menggunakan ragi dan urea (food grade). Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan masyarakat dalam mengolah air kelapa menjadi produk cuka siap pakai dan bernilai jual. Produk yang dihasilkan dikemas dalam botol berlabel sebagai produk unggulan lokal. Kegiatan ini tidak hanya mendukung pengurangan limbah organik, tetapi juga membuka peluang ekonomi baru bagi masyarakat Desa Oma melalui penerapan konsep ekonomi sirkular berbasis potensi lokal.
Sosialisasi dan Edukasi Interaktif Tentang Resistensi Antibiotik Bagi Siswa SMA Negeri 6 Maluku Tengah Dwi Anggara Putri Usman; Ivonne Telussa; Nelson Gaspersz; Irwan Rutu; Milda Rianty Lakoan
Innovation for Community Service Journal Vol 3 No 2 (2025): Oktober 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i2.22918

Abstract

Resistensi antibiotik merupakan ancaman serius bagi kesehatan masyarakat karena dapat menurunkan efektivitas pengobatan infeksi. Rendahnya pemahaman masyarakat, terutama remaja, terhadap penggunaan antibiotik yang benar menjadi alasan penting dilaksanakannya kegiatan pengabdian ini. Tujuan kegiatan adalah meningkatkan pengetahuan dan kesadaran siswa SMA Negeri 6 Maluku Tengah mengenai penggunaan antibiotik secara rasional. Metode yang digunakan meliputi tiga tahap, yaitu pra-kegiatan (observasi dan koordinasi), pelaksanaan (sosialisasi, diskusi interaktif, dan kuis edukatif), serta evaluasi (pre-test dan post-test). Kegiatan diikuti oleh 30 siswa dan menunjukkan peningkatan pengetahuan yang signifikan, dari 30% sebelum kegiatan menjadi 80% setelah kegiatan. Siswa juga menunjukkan perubahan sikap positif terhadap penggunaan antibiotik dengan lebih berhati-hati dan tidak menggunakan obat tanpa resep dokter. Hasil ini menunjukkan bahwa pendekatan edukatif interaktif efektif untuk meningkatkan literasi kesehatan di kalangan pelajar. Kegiatan ini penting karena memberikan dampak nyata terhadap peningkatan kesadaran generasi muda dalam mencegah resistensi antibiotik dan berpotensi dikembangkan menjadi program berkelanjutan berbasis sekolah di wilayah kepulauan.
The Application of Technology to Increase Palm Sugar Production from Palmyra Sap (Borassus flabellifer L.) in Household Industries in Oirata Village, Southwest Maluku Priska Pattiasina; Nelson Gaspersz; Marfin Lawalata
Unram Journal of Community Service Vol. 6 No. 4 (2025): December
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i4.1191

Abstract

Southwest Maluku, particularly Kisar Island, has abundant natural resources that can be optimally managed to address food shortages. Meeting food needs through local wisdom is an essential capital that must be strengthened by both the government and the community. One of the island’s local potentials is the koli tree (Borassus flabellifer L.), which grows widely in Oirata Village. Its sap can be processed into koli palm sugar, which is highly nutritious and economically valuable. Unlike other sugar sources, the koli tree grows naturally without cultivation and can be tapped at any time. However, its production has not yet been properly managed to meet market demand. Through the Community Partnership Program, we introduced appropriate technology in the form of palm sugar cooking equipment to improve both the quality and quantity of koli palm sugar. This innovation is expected to expand its market beyond Kisar Island. The program includes community socialization, training on equipment use, production assistance, and product packaging with proper labeling, aiming to empower the people of Oirata Village and enhance their local enterprises.
Community Empowerment through the Application of Technology to Increase Copra Production for Farmer Groups in Saweli Village, Taniwel, West Seram Mimi Salmawati; Nelson Gaspersz; Priska Marisa Pattiasina
Unram Journal of Community Service Vol. 7 No. 1 (2026): March
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v7i1.1551

Abstract

West Seram Regency has a coconut plantation area of 8,326.10 hectares, with a total production of 7,390.5 tons and an average productivity of 0.89 tons per hectare. Nearly all parts of the coconut plant can be utilized, including the trunk, leaves, fruit, husk, and shell. The use of mature coconuts for copra production is one of the ways to increase the income of coastal communities, particularly in Saweli Village, located in West Seram Regency. However, copra production in Saweli Village, which is generally carried out using traditional or home-industry methods, has not yet reached optimal results in terms of production time and output quantity. One of the main challenges faced by the community is the lengthy process of removing the coconut husk and shell during copra production. The current pre-processing stage remains conventional, as coconuts are peeled manually using traditional tools. Therefore, through this Community Empowerment Program (PMS), we aim to introduce transformative learning to help develop and empower the local community, particularly in Saweli Village, Taniwel District, West Seram Regency, Maluku. This initiative focuses on supporting small-scale entrepreneurs whose production processes have not yet met market standards.
Acid-Catalyzed Synthesis of Biodiesel from Calabash (Crescentia cujete) Seed Oil Nelson Gaspersz; Matheis F. J. D. P. Tanasale; Chalvin Marco Paula; Mimi Salamawati; Priska Marisa Pattiasina
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.13763

Abstract

This study evaluated the acid-catalyzed production of biodiesel from Calabash (Crescentia cujete) seed oil using sulfuric and nitric acids as transesterification catalysts. Oil extracted by Soxhlet extraction yielded 35.20% and was converted into biodiesel under various reaction conditions to determine the optimum catalyst loading, reaction time, temperature, and oil-to-methanol molar ratio. Sulfuric acid exhibited superior catalytic performance, achieving the highest biodiesel yield of 91.20% at 4% catalyst loading, 65 °C, 4 h, and an oil-to-methanol molar ratio of 1:12. Under optimum conditions, nitric acid produced a lower yield of 65.85% at 3% catalyst loading, 65 °C, 6 h, and a molar ratio of 1:9. GC-MS analysis identified seven methyl esters in the sulfuric acid-derived biodiesel, predominantly methyl hexadecanoate (16.93%), methyl stearate (15.07%), and methyl 9-octadecenoate (43.64%). Biodiesel synthesized using nitric acid contained eight methyl esters, with methyl hexadecanoate (16.55%), methyl stearate (26.90%), and methyl 9-hexadecenoate (21.51%) as the major components. The corresponding burning rates were 1.96 × 10⁻³ and 2.71 × 10⁻³ cm²/s for sulfuric and nitric acid catalysts, respectively. Overall, sulfuric acid proved more effective, producing higher biodiesel yield in a shorter reaction time and demonstrating the potential of C. cujete seed oil as a non-edible biodiesel feedstock.
Dispersi: Studi Pendahuluan Revitalisasi Pemanfaatan Karbon Aktif sebagai Material Elektroda. Shielda Natalia Joris; Nelson Gaspersz; Mario Rowan Sohilait
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 12 No. 1 (2023): Volume 12 Nomor 1 (Maret 2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Activated carbon is a cheap carbon material with high specific surface area, porosity, and electrical conductivity. This fact makes the various applications of activated carbon as an adsorbent, water treatment, and energy sector. Activated carbon dispersion studies facilitate the application of activated carbon as a primary material in the design of electrodes in fuel cells and batteries. In this study, dispersion studies of activated carbon were carried out in an aqueous system using surface active agents (surfactants) Cetyl Trimethyl Ammonium Bromide (CTAB), Sodium Dodecyl Sulfate (SDS), and Polysorbate 80 (Tween 80). The ratio of activated carbon to surfactants varies from 1:0–1:5 for each surfactant. The UV-Vis spectrophotometer measurements at a wavelength of 200–500 nm showed that Tween 80 surfactant with a 0,05 g activated carbon with 3 mL Tween 80 could disperse activated carbon in water solvents better than CTAB and SDS.
Co-Authors Adriani Bandjar Amos, Matthew Adi Honey Anakotta, Jaicson G. Anancy Reza Ngarbingan Antho Netty Siahaya Arpipi, Henderika S. S. Baharudin, Muh. Daswar A. Bandjar, A. Bandjar, Adriani Bijang, Catherina Manukpadang Catherina Manukpadang Bijang Chalvin Marco Paula Dewi Sri Dolaitery, Lois Mikhal DOMINGGUS MALLE Dwi Anggara Putri Usman Eirene Grace Fransina Eirene Grace Fransina El, Rahma Erwin Ubwarin Fensia Analda Souhoka Fransina, Eirene G. Hasanela, Nurani Hattu, Nikmans Hellna Tehubijuluw Herland Satriawan I W. Sutapa Indrid Harjuni Insun Sangadji Irwan Rutu Ivonne Telussa Jacobus Cliff Diky Rijoly Joris, Shielda Natalia Kafara, Zulvia Astrianti Kapelle, Imanuel B. D. Karnelasatri Karnelasatri Landu, Sartika Latupeirissa, Jolantje Leuwol, Dean Y.E. Marfin Lawalata Mario R. Sohilait Mario Sohilait Matheis F. J. D. P. Tanasale Matthew Adi Honey Amos Milda Rianty Lakoan Mimi Salamawati Mimi Salmawati Pattiasina, Priska M. Pattiasina, Priska Marisa Priska Marisa Pattiasina Priska Marisa Pattiasina Priska Marissa Pattiasina Priska Pattiasina Rahayu Rahayu Rahayu Rosita Silaban Rosmawaty Harahap Salmawati, Mimi Sanawain, Lea Sekewael, Serly J. Semuel Simra Pada Serly Jolanda Sekewael Seumahu, Cecelia Anna Siahaya, Anto Netty Sitti Hardiyanti Kalauw Sohilait, Mario R. Sohilait, Mario Rowan Sri, Dewi Stephanie Pascal Sohilait Tahya, Candra Yulius Tanasale, Matheis F. J. D. P. Yusthinus T. Male Yusthinus Tobias Male