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All Journal JURNAL KIMIA SAINS DAN APLIKASI SAINSMAT Jurnal Kimia Riset Chemistry Indonesian Journal of Chemical Research Eksakta : Berkala Ilmiah Bidang MIPA Pakem : Jurnal Pengabdian Kepada Masyarakat Innovation for Community Service Journal SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Joris, Shielda Natalia
Chemistry Study Program, Sciences And Technology Faculty, Universitas Pattimura, Jl. Ir. M. Putuhena, Ambon, 97233, 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 Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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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.
Pemberdayaan Remaja SMTPI melalui Pelatihan Pembuatan Virgin Coconut Oil (VCO) sebagai Upaya Peningkatan Nilai Ekonomis Santan Kelapa Shielda Natalia Joris; Mirella Fonda Maahury
Innovation for Community Service Journal Vol 3 No 1 (2025): April 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i1.19321

Abstract

Tanaman kelapa dan produk turunannya, seperti santan kelapa, memiliki peran penting sebagai sumber pangan lokal dan komoditas ekonomi di Maluku. Kelapa tidak hanya menjadi bagian dari budaya dan kehidupan masyarakat, tetapi juga berpotensi besar untuk dikembangkan menjadi produk bernilai tambah, seperti Virgin Coconut Oil (VCO). Generasi muda dan remaja memegang peranan penting sebagai penerus dan pelestari tanaman pangan lokal ini, sehingga perlu diberikan pengetahuan dan keterampilan yang mendukung keberlanjutan tanaman kelapa serta pengolahan produknya. Dalam program pengabdian kepada masyarakat tahun 2023, Jurusan Kimia FMIPA Universitas Pattimura melaksanakan pelatihan dan pendampingan pembuatan VCO bagi remaja Sekolah Minggu Tunas Pekabaran Injil (SMTPI) Sektor Betsaida, Jemaat GPM Petra, Klasis Kota Ambon. Kegiatan pelatihan dilakukan melalui beberapa tahap, yaitu survei dan persiapan bahan, pembuatan VCO dari santan kelapa yang menggunakan metode mekanik, pemisahan produk VCO dari lapisan airnya, dan pendampingan pameran. Pelatihan bertujuan untuk meningkatkan pemahaman generasi muda tentang pentingnya kelapa sebagai pangan lokal sekaligus meningkatkan nilai ekonomis santan kelapa melalui inovasi teknologi tepat guna. Hasil kegiatan pelatihan ini ditunjukkan melalui keterampilan remaja mitra memproduksi VCO yang kemudian diikutsertakan dalam pameran pekan kreatifitas di tingkat jemaat.
Dari Teori ke Aksi: Eksperimen Kimia Sederhana untuk Siswa di SMA Negeri 5 Maluku Tengah Shielda Natalia Joris; Mirella Fonda Maahury; Yusthinus Thobias Male
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.v3i1.21674

Abstract

Kegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh keterbatasan fasilitas laboratorium di SMA Negeri 5 Maluku Tengah yang membuat siswa jarang berinteraksi langsung dengan konsep kimia secara praktis. Padahal, minat belajar dan rasa ingin tahu ilmiah siswa akan tumbuh apabila mereka mendapatkan pengalaman belajar yang menyenangkan dan aplikatif. Oleh karena itu, tim dosen Jurusan Kimia FMIPA Universitas Pattimura melaksanakan kegiatan berupa demonstrasi eksperimen kimia sederhana yang mudah dilakukan dengan bahan-bahan sekitar. Metode kegiatan mencakup perancangan eksperimen, penyusunan booklet pembelajaran, koordinasi dengan pihak sekolah, pelaksanaan demonstrasi, dan evaluasi respon siswa. Eksperimen yang ditampilkan meliputi indikator alami asam–basa, pesan rahasia dengan tinta lemon, dan lava lamp sederhana. Hasil kegiatan menunjukkan peningkatan antusiasme siswa, keterlibatan aktif dalam mencoba eksperimen, serta munculnya keberanian untuk bertanya dan berdiskusi. Luaran kegiatan berupa booklet, berita pada laman Jurusan Kimia, serta dokumentasi video pada kanal YouTube. Dengan demikian, kegiatan ini berhasil menjadi langkah awal dalam memotivasi siswa untuk lebih mencintai pembelajaran kimia serta memperkuat kerja sama universitas dengan sekolah mitra.
Study of Mercury and Arsenic Contamination in Gold Processing Tailings from Gunung Botak, Buru Island – Maluku Anto Netty Siahaya; Matheis Frits Jan David Pieter Tanasale; Shielda Natalia Joris; Muhammad Syahyono Hasimin; Filky Sky Choesni
Indonesian Journal of Chemical Research Vol 13 No 3 (2026): Edition for January 2026
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2026.13-ant

Abstract

Buru Island in Maluku Province is one of the sites of unlicensed gold mining activities (Illegal Gold Mining, IGM), which may lead to environmental pollution due to improper waste management. This study aimed to analyze the concentrations of mercury (Hg) and arsenic (As) as hazardous pollutants (Hazardous and Toxic Materials, HTM) in gold processing tailings from Dafa and Debowae Villages, Buru Island. Tailings samples were collected from three different sites. Mercury concentrations were determined using Cold Vapor AAS, while As was analyzed using Hydride-Generation AAS based on the APHA-AWWA-WEF standard method (2005). The results showed that Hg levels in tailings from Debowae Village (Location 1 and 2) were 399.18 mg/kg and 286.39 mg/kg dry weight, respectively, whereas Dafa Village (Location 3) reached 1182.51 mg/kg dry weight. Arsenic concentrations ranged from 0.59 to 0.74 mg/kg dry weight across all locations. According to Indonesia Government Regulation PP No. 22 of 2021 on Hazardous Waste Management, Hg concentrations in all study sites exceeded the quality standard, whereas As levels remained below the permissible limits. These findings highlight the serious potential risk of mercury contamination in artisanal gold mining areas on Buru Island.
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.
Preliminary Study of Particle Size Analysis CuAl2O4 based on X-ray Diffractogram Shielda Natalia Joris; Yuli Ainun Rosidah
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 9 No. 2 (2020): Volume 9 Nomor 2 (September 2020)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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

Abstract

Preliminary research on CuAl2O4 particle size analysis was conducted to determine the probability of synthesizing these nanoparticles in water system by using the sol-gel technique. Precursors materials which have been used i.e Copper nitrate, aluminium nitrate, and citric acid. This technique starts from the precursor complex, and involves the formation of homogeneous stable intermediates. The structure of CuAl2O4 nanoparticle occurred when all precursors were calcinated at 700 °C at the furnace for an hour. The product was characterized by using X-ray diffraction method. The particle size was measured by Scherrer Law's and it showed to be 9,56 nm.
Co-Authors Alfian Noor Anto Netty Siahaya Catherina Manukpadang Bijang Chrismenda Kartini Wattimena Djulia Onggo Fauzan Saleh Filky Sky Choesni Gaspersz, Nelson Hanoch J Sohilait Ivonne Telussa Jolantje Latupeirissa Kapelle, Imanuel B. D. Maahury, Mirella Fonda Matheis Frits Jan David Pieter Tanasale Mirella Fonda Maahury Muhammad Syahyono Hasimin Ngingi, Erik J Nikmans Hattu Nini Munirah Renur Nurani Hasanela Priska Marisa Pattiasina Semuel S. Pada Semuel Simra Pada Semuel Simra Pada Serly J. Sekewael Siahaya, Antho Netty Sohilait, Mario Rowan Sri, Dewi Stephanie P. Sohilait Yuli Ainun Rosidah Yuli Ainun Rosidah Yusthinus T. Male Yusthinus Thobias Male Yusthinus Thobias Male Yustinus Thobias Male