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All Journal CHEMISTRY PROGRESS Jurnal Matematika & Sains MAJALAH BIAM Indonesian Journal of Chemistry Biosel: Biologi Science and Education Chemistry Indonesian Journal of Chemical Research Eksakta : Berkala Ilmiah Bidang MIPA Molekul: Jurnal Ilmiah Kimia Fullerene Journal of Chemistry Molluca Journal of Chemistry Education (MJoCE) Biofaal Journal Innovation for Community Service Journal
Yusthinus T. Male
Patimura University
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Bioremediation of Pb and Cd Metal from Inner Ambon Bay Sediment Which Contaminated With Heavy Metal Using Aspergillus niger Male, Yusthinus T; Seumahu, Cecillia Anna; Malle, Dominggus
Indonesian Journal of Chemical Research Vol 7 No 2 (2020): Edisi Bulan Januari (Edition for January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.7-yus

Abstract

Bioremediation is a method that use microorganism to extract heavy metal from contaminated waste. In this research Aspergillus niger was used to extract heavy metal such as Pb and Cd of marine sediment from Waiheru shore, Inner part of Ambon Bay, which was detected as significantly high heavy metal contaminated site among seven sites. Bioremediation were done using Aspergillus nigers to extract Pb and Cd metal from sediment, then their solubility being measured in filtrate media. Result shows that Cd metal were only detected 15 days after incubation while Pb were detected since the first day incubation. This result also showing the fluctuating solubility of Pb metal. It is suspected that this occurs due to biosorption ability of the fungi that being used which triggers metal accumulation in the cell structure. It is therefore can be concluded that Aspergillus niger can be used in bioremediation of sediment that are being contaminated by Pb and Cd heavy metals.
Biokonsentrasi dan Bioakumulasi Mercury (Hg) Pada Lamun Enhalus Acoroides Di Teluk Kayeli Kabupaten Buru Provinsi Maluku R. Fakaubun, Fahrul; Male, Yusthinus T; Selanno, Debby A. J.
Indonesian Journal of Chemical Research Vol 8 No 2 (2020): Edition for September
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.8-frf

Abstract

Gold reserves on Gunung Botak (Bald Mountain), Buru Island, were discovered in 2011. Since then, thousands of illegal miners have used amalgamation methods to extract gold in the areas of Gunung Botak and Gogrea, Buru Island. The resulting waste is disposed of into the environment directly without any treatment process so it is very dangerous for humans and the environment. This research was conducted to determine the ability of the Enhalus acoroides type of seagrass to accumulate heavy metal mercury (Hg) in the aquatic environment. This research shows that the heavy metal mercury has been distributed in the water sediments along Kayeli Bay. Mercury bio-concentration (accumulation) Gunung Botak, Kayeli Bay, Mercury (Hg), bioconcenstration, Seagrass, Enhalus acoroides, Kayeli Baywas found in Enhalus acoroides seagrass, in leaves (0.0243-0.0373 mg/Kg), and in rhizomes (0.0453-0.0663 mg/Kg). This result shows that the Kayeli Bay ecosystem has been contaminated with mercury.
Sosialisasi Kontaminasi Logam Beracun Merkuri (Hg) pada Ekosistem di Desa Tifu, Namlea, Kabupaten Buru Male, Yusthinus Thobias; Fransina, Eirene Grace; Gaspersz, Nelson; Sanawain, Lea
Innovation for Community Service Journal Vol 2 No 1 (2024): April 2024
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v2i1.12977

Abstract

Pada saat kegiatan Pertambangan Emas Tanpa Ijin (PETI) marak terjadi di Gunung Botak, Namlea (Tahun 2011-2016), banyak penduduk Desa Tifu yang mengolah emas menggunakan merkuri di halaman belakang rumah mereka. Secara teori, 30% dari merkuri yang digunakan akan terbuang ke lingkungan. Bekas area tromol telah dijadikan lahan pertanian sehingga sangat berpotensi terjadi biomagnifikasi, yaitu masuknya merkuri manusia melalui bahan makanan. Hasil analisis laboratorium menunjukkan bahwa ekosistem (tanah dan tumbuhan) di Desa Tifu telah terkontaminasi dengan merkuri. Kegiatan Pengabdian masyarakat dilakukan untuk memberikan data valid sekaligus edukasi kepada masyarakat tentang kontaminasi merkuri pada ekosistem bekas area tromol (tanah, tumbuhan dan hewan). Kegiatan ini juga meningkatkan pemahaman masyarakat tentang dampak buruk bagi kesehatan.
Pengembangan Metode Pembelajaran Kimia Kreatif sebagai Sarana Pengabdian di SMK Negeri 8 Ambon Joris, Shielda Natalia; Sohilait, Hanoch Julianus; Male, Yusthinus Thobias; Maahury, Mirella Fonda; Pada, Semuel Simra; Sri, Dewi
Innovation for Community Service Journal Vol 2 No 2 (2024): Oktober 2024
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v2i2.15613

Abstract

Pendidikan kimia di SMK sering kali dihadapkan pada tantangan dalam meningkatkan motivasi dan pemahaman siswa terhadap materi yang bersifat abstrak. Oleh karena itu, kegiatan ini bertujuan untuk mengembangkan metode pembelajaran kimia kreatif yang dapat menarik minat siswa dan meningkatkan pemahaman mereka. Topik ini penting karena rendahnya motivasi belajar dapat menghambat prestasi akademik siswa, terutama di bidang sains. Metode pengabdian yang diterapkan dalam kegiatan ini melibatkan pelatihan guru dan siswa melalui penggunaan alat peraga sederhana dan pendekatan kontekstual yang relevan dengan kehidupan sehari-hari. Kegiatan ini juga dilengkapi dengan evaluasi berbasis observasi dan kuisioner untuk mengukur dampak dari metode yang diterapkan. Hasil kegiatan menunjukkan peningkatan yang signifikan dalam motivasi dan keterlibatan siswa selama proses pembelajaran, serta pemahaman yang lebih baik terhadap konsep-konsep kimia. Dengan demikian, pengembangan metode pembelajaran kimia kreatif ini tidak hanya memberikan kontribusi positif terhadap kualitas pendidikan di SMK Negeri 8 Ambon, tetapi juga dapat diadaptasi oleh sekolah-sekolah lain sebagai model pembelajaran yang efektif dan inovatif dalam meningkatkan hasil belajar siswa di bidang kimia.
The Potential of Active Compounds from Melinjo Leaves (Gnetum gnemon) as an Antihistamine using Molecular Docking Approach for Acetylcholine Muscarinic M3 Receptor Inhibition Gaspersz, Nelson; Amos, Matthew Adi Honey; Male, Yusthinus T.; Baharudin, Muh. Daswar A.; Leuwol, Dean Y.E.; El, Rahma; Pattiasina, Priska M.; Sohilait, Mario R.; Herland Satriawan
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 04 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss04/460

Abstract

Melinjo leaves (Gnetum gnemon) have been used traditionally in Maluku to treat spoilage in the fish product. Melinjo leaves contain secondary metabolites with anti-inflammatory and antibacterial biological activities. It has been identified contain gnetumal, callyspinol, cassipuorol, (+)-dehydrovomifoliol, p-coumaric acid, ferulic acid, isovitexin, swersitin, isoswersitin, vicenin 2, swertiajaponin, isoswertiajaponin and ursolic acid. This research aims to predict the potential of the compounds in melinjo leaves as antihistamines by inhibiting the activity of the acetylcholine muscarinic M3 receptor. The research was carried out using an in silico study method using a molecular docking approach. Docking results showed that gnetumal, callyspinol, cassipuorol, (+)-dehydrovomifoliol, p-coumaric acid, ferulic acid, isovitexin, swersitin, isoswersitin, vicenin 2, swertiajaponin, isoswertiajaponin and ursolic acid for the muscarinic acetylcholine receptor M3 had a binding affinity value of -7.4, -8.0, 7.0, 7.0, -6.6, -6.6, -7.4, -5.7, -4.4, -3.7, -6.0, -4.9 and -4.7 kcal/mol, respectively.
The Sediment Profile and Heavy Metal Content of Lead (Pb), Copper (Cu), and Silver (Ag) in The Waters of Saparua Island Anakotta, Jaicson G.; Male, Yusthinus T.; Sekewael, Serly J.; Gaspersz, Nelson
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-ana

Abstract

This study determined the distribution levels of heavy metals Pb, Cu, and Ag in sediments in the waters of Saparua Island. It characterized the sediments in the seas of Saparua Island. Parameters are physical and chemical parameters of waters, determination of total organic carbon (TOC), and digestion of sediment samples for SSA testing. The results obtained levels of copper metal contained in the sediments from 0.1583–1.9531 mg/L and <4–78 ppm. The level of lead metal contained in the sediments in the waters of Saparua Island ranges from <12–26 ppm. Metal oxides, especially metal oxides formed from Cu, were found in sediments in the waters of Saparua Island with location points P.8 and P.9, namely CuO 0.0056% and 0.0031% and in sediments in Saparua Island waters with a value of 2Ɵ in sediment samples. P.2, P.3, P.6, P.8, P.9, and P.11 have the highest intensity which is the characterization of metal oxide 2Ɵ= 27.7464°, 29.4759, 26.2979, 26.6686, 26.7007, and 24.3695 indicate the presence of CaO (calcium oxide) phases at points P.2, P.3, and P.6. the SiO2 (silica) phase which is the most abundant metal in sediment samples P.8, P.9, and P.11 based on the XRF test.
The Analysis of The Absorption Capabilities of The Heavy Metal Mercury (Hg) in Mangrove Crab (Scylla serrata), Mangrove Snail (Telescopium telescopium) and Mangrove Clams (Polymesoda erosa) Irsan, Irsan; Male, Yusthinus T.; Koto, Saifuddin; Mangesa, Rosita; Ismail, Irwan; Nuraisah, Siti; Kabau, Widyawati; Banjar, Firman
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.12-irs

Abstract

Mercury is a neurotoxic heavy metal with high bioaccumulation ability in aquatic biota, such as mangrove crabs (Scylla serrata), mangrove snails (Telescopium telescopium), and mangrove mussels (Polymesoda erosa), which are widely consumed by humans, and used as bioindicators of pollution. This study aimed to analyze the effect of mercury solution concentration and species differences on mercury absorption in the three biota. The method used was experimental treatment with mercury concentrations of 1 ppm, 5 ppm, 10 ppm, and control. Samples were analyzed using the AAS Cold Vapor method at the IPB Bogor Proling Laboratory. Data were analyzed descriptively and inferentially using two-way Anova with an α level of 0.05, followed by the Duncan Test if the hypothesis was accepted. Research data will be processed using SPSS 26.0 software. The results showed that mercury concentration and species differences influenced the ability to absorb mercury. Mangrove clams had the highest mercury accumulation compared to mangrove snails and mangrove crabs, especially in the 5 ppm and 10 ppm treatments. The highest mercury exposure occurred on the second day of observation.
ANALYSIS OF BORAX AND FORMALDEHYDE CONTENT IN MEATBALLS IN AMBON CITY Male, Yusthinus T; Rumakat, Dewi H; Fransina, Eirene G; Wattimury, Jusuf
Biofaal Journal Vol 1 No 1 (2020): Biofaal Journal
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.303 KB) | DOI: 10.30598/biofaal.v1i1pp37-43

Abstract

A research has been done to analyze the content of borax and formalin content in several meatball sales places in Ambon City. This study uses two stages of analysis; qualitative analysis to determine the presence or absence of borax and formalin in meatballs and quantitative analysis to determine what levels of borax and formalin in meatballs. The results of the qualitative analysis of borax and formalin in the meatballs of ten samples showed one sample containing borax, which is sample A (Wayame) with borax content of 1.02% (w / w) while all of the samples sample did not contain formalin. Even though it is found in quite low levels, the use of borax as a food additive is not allowed because it is very dangerous for human health.
Analisis Kandungan Merkuri (Hg) dan Kadar Klorofil Lamun Enhalus Acoroides Di Perairan Marlosso dan Nametek Kabupaten Buru Provinsi Maluku Natsir, Nur Alim; Selanno, Debby A.J.; Tupan, Ch I; Male, Yustinus T.
Biosel Biology Science and Education Vol. 9 No. 1 (2020): BIOSEL (Biology Science and Education: Jurnal Penelitian Science dan Pendidikan
Publisher : INSTITUT AGAMA ISLAM NEGERI AMBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.694 KB) | DOI: 10.33477/bs.v9i1.1321

Abstract

Seagrass is a type of vegetation that is able to live and develop well in coastal areas and is a habitat for several types of marine animals,such as sea cucumbers, sea urchins, starfish and sea urchins. Seagrass is an organism that is susceptible to pollution of the coastal environment such as mercury (Hg) so that it has an impact on the chlorophyll content of seagrass leaves. This study aims to determine the content of heavy metal Hg and its relationship with the chlorophyll content of seagrass Enhalus acoroides in the waters of Marlosso and Nametek in Buru District Maluku Province. The study was conducted in May 2018 and laboratory analysis was conducted in June 2018. Samples were taken at two stations namely Nametek Beach and Muos Sungai Marlosso. The results showed that the content of heavy metal Hg in roots> rhizoma> seagrass leaves. The content of heavy metals and seagrass chlorophyll content has a negative correlation where the Hg metal has a correlation of (r = - 0.97) and indicates that the higher the content of heavy metals will reduce the seagrass chlorophyll content
Pemanfaatan Sayur Bayam Sebagai Cemilan Sehat untuk Mengatasi Stunting di Desa Hatusua, Kab. Seram Bagian Barat, Provinsi Maluku Male, Yusthinus Thobias; Sohilait, Hanoch Julianus; Sekewael, Serly Jolanda; Kapelle, Imanuel Berly Delvis; Tehubijuluw, Hellna; Bijang, Chaterina Manukpadang; Hattu, Nikmans; Telussa, Ivonne; Siahaya, Antho Netty; Rosmawaty, Rosmawaty; Sohilait, Mario Rowan
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.v3i1.19628

Abstract

Stunting merupakan masalah kesehatan yang berdampak pada pertumbuhan fisik dan perkembangan kognitif anak. Desa Hatusua, Seram Bagian Barat, menghadapi tantangan dalam pemenuhan gizi seimbang akibat rendahnya konsumsi makanan bergizi. Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan kesadaran masyarakat tentang pentingnya gizi serta memperkenalkan inovasi pengolahan sayur bayam sebagai cemilan sehat yang menarik bagi anak-anak. Metode yang digunakan dalam kegiatan ini mencakup survei awal, dan pelatihan pembuatan cemilan berbahan dasar bayam. Hasil kegiatan menunjukkan adanya peningkatan pemahaman masyarakat mengenai pentingnya konsumsi makanan bergizi, serta perubahan pola makan anak-anak yang lebih menerima cemilan berbahan dasar bayam. Selain itu, beberapa peserta berantusias mengikuri pelatihan dalam pembuatan kripik bayam berbasis cemilan sehat sebagai peluang ekonomi lokal. Keberhasilan program ini mengindikasikan bahwa pendekatan berbasis pangan lokal dan keterlibatan masyarakat secara aktif dapat menjadi solusi efektif dalam penanggulangan stunting. Program ini berpotensi dikembangkan lebih luas dengan dukungan pemerintah dan berbagai pihak terkait guna menciptakan keberlanjutan dalam peningkatan kualitas gizi masyarakat.
Co-Authors Abraham Mariwy Amos, Matthew Adi Honey Anakotta, Jaicson G. Anjarnita Haupea Asriningsih, Asriningsih Baharudin, Muh. Daswar A. Banjar, Firman Batawi, Chudeya Y. Bijang, Catherina Manukpadang Bijang, Chaterina Manukpadang Claudia F Talaud Djulia Onggo Djulia Onggo Dolaitery, Lois Mikhal DOMINGGUS MALLE El, Rahma Fahrul Rozy Fakaubun Fransina, Eirene G. Gaspersz, Nelson Hanoch J Sohilait Hattu, Nikmans Hellna Tehubijuluw Herland Satriawan I Wayan Sutapa IRSAN . Irsan Irsan Ismail, Irwan Ismunandar Ismunandar Ismunandar Ivonne Telussa Joris, Shielda Natalia Jusuph J Wattimury Kabau, Widyawati Kapelle, Imanuel B. D. Koto, Saifuddin Landu, Sartika Lesiela, Lewi Lessil, Camellia Y. Letsoin, Lina I Leuwol, Dean Y.E. Lina I Letsoin Maahury, Mirella Fonda Mangesa, Rosita Matheis F.J.D.P anasale Matheis F.J.D.P. Tanasale Modok, Deddy W.S. Muhamad A. Martoprawiro Muhamad Abdulkadir Martoprawiro Muhamad Abdulkadir Martoprawiro Nanlohy, Alberth Ch. Natsir, Nur Alim Netty A Siahaya Nina B Garium Nunumete, Neti Pattiasina, Priska M. Pelata, Paulina M. Pieter J Kunu Pusung, Yulian A. D. Ranglalin, Olivia M. Rosmawaty Harahap Rumakat, Dewi H Rumatoras, Hadijah Salatutin, Febrian M. Sanawain, Lea Sekewael, Serly J. Sekewael, Serly Jolanda Selanno, Debby A J Selanno, Debby A.J. Semuel Simra Pada Seumahu, Cecelia Anna Seumahu, Cecilia A. Seumahu, Cecillia Anna Siahaya, Antho Netty Siahaya, Netty A Siti Nuraisah, Siti Sohilait, Mario R. Sohilait, Mario Rowan Sri, Dewi Sunarti Taipabu, Muhammad I. Tehubijuluw, Helna Tupan, Ch I Wattimury, Jusuf Yeanchon H Dulanlebit