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All Journal Jurnal Ilmu Lingkungan Jurnal Riset Kimia JURNAL INTEGRASI PROSES Jurnal SOLMA Jurnal Kimia Terapan Indonesia Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Akta Kimia Indonesia Jurnal Saintek Lahan Kering Indonesia Journal of Halal JURNAL PENGABDIAN KEPADA MASYARAKAT Agroprimatech Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Stannum : Jurnal Sains dan Terapan Kimia BIO-EDU: Jurnal Pendidikan Biologi Molluca Journal of Chemistry Education (MJoCE) BERNAS: Jurnal Pengabdian Kepada Masyarakat Bakti Cendana: Jurnal Pengabdian Masyarakat Journal of Tropical Animal Science and Technology Hydrogen: Jurnal Kependidikan Kimia Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Livestock and Animal Research Journal of Chemical Science and Application
Kolo, Maria Magdalena
Program Studi Kimia, Fakultas Pertanian, Sains Dan Kesehatan, Universitas Timor, NTT, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Dentistry Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Neuroscience Nursing Public Health Social Sciences Veterinary Other

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KAJIAN SIFAT KIMIA DAN FISKA TANAH PADA LAHAN BEKAS GALIAN MANGAN DI DESA OELAMI Tobing, Wilda Lumban; Taus, Jonisius; Bria, Deseriana; Tefa, Azor Yulianus; Kolo, Maria Magdalena
Agroprimatech Vol. 7 No. 2 (2023): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v7i1.4273

Abstract

Manganese is a micro nutrient that plants need in small quantities. Manganese plays an important role as an enzyme activator, including phosphate transfer enzymes and enzymes in the Krebs cycle. The aim of this research was to study the chemical and physical properties of the soil on ex-manganese excavated land in Oelami Village, TTU Regency. This research was carried out in June-September 2022. Analysis of the chemical and physical characteristics of the soil was carried out in the laboratory of the Faculty of Agriculture, University of Timor, and the Laboratory of the Faculty of Agriculture, Nusa Cendana University. This study used a descriptive experimental method which was carried out by survey and continued with laboratory analysis. Soil samples were taken at 5 points based on land use. Based on the results of the analysis of the chemical and physical properties of soil from ex-manganese excavated land, pH was 6.321 (slightly sour), CEC 33.46 me/100g (high), C-organic 0.22% (low), N-total 0.22% (low ), P-total 61.44 mg/100g (high), K-total 71.189 mg/100g (high), Mn-total 19,089 ppm (high), organic matter 0.81% (low), sandy loam soil texture ( sand 81.33%, dust 10.67%, and clay 8.00%), soil water content 8.611% (medium), soil density 1.25 g/cm3 (medium), soil specific gravity 1.47 g/ cm3 (low), and porosity 14.961% (high)
Synthesis of Cellulose Acetate From Coil Waste (Borassus flabellifer L) Using Delignification Time Variations: Sintesis Selulosa Asetat Dari Limbah Sabut Lontar (Borassus flabellifer L) dengan Menggunakan Variasi Waktu Delignifikasi Batu, Matius Stefanus; Kolo, Maria Magdalena; Rika, Fransiska
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 2 (2024): October 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i2.4113

Abstract

Synthesis of cellulose acetate form palm coir (Borassus flabellifer L) waste has been synthesized by varying the time in the delignification process. This study aimed to determine the characteristics of cellulose acetate form palm coir waste (Borassus flabellifer L) and the optimum time for the delignification process. This research was conducted in several stages: sample preparation, cellulose isolation (delignification and bleaching process), and synthesis of cellulose acetate (activation, acetylation, and hydrolysis process). The cellulose acetate obtained was then charatecrized by testing for water content, acetyl content, and degree of substitution and functional grup analysis using a fourier transform infra-red (FTIR) spectrophotometer. In the delignification process, variations of the delignification time were usesd, namely 60, 90, 120, and 150 minutes. Form the results of the study, the characteristics of cellulose acetate in palm coir were optained, namely water content of 0.95%‒2.16%, acetyl content of 37.19%‒40.85%, degree of substitution of 2.2‒2.6 and identification of functional groups using FTIR showed that there was a typical absorption of cellulose acetate on the carbonyl group (C=O) and the ester group (C-O acetyl). The results of variations in the time of the delignification process showed that the optimum reaction time was 120 minutes with the yield of cellulose acetate produced at 254.4%, water content 2.16%, acetyl content 40.85%, degree of substitution (DS) 2.6. the cellulose acetate produced belongs to the type of cellulose diacetate, which can be further utilized in manufacturing threads, membranes, adhesives of films, and mask filters.
Isolation and Identification of Bacteria from Cattle Rumen Fluid and Their Application on In Vitro Digestibility of Rice Straw Bira, Gerson Frans; Sio, Stefanus; Batu, Matius S; Pardosi, Lukas; Kia, Kristoforus W; kolo, Maria Magdalena; Nubatonis, Alfred
Journal of Tropical Animal Science and Technology Vol. 7 No. 3 (2025): Journal of Tropical Animal Science and Technology
Publisher : Animal Husbandry Study Program, Faculty of Agriculture, Timor University

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

Abstract

This study aimed to isolate and identify bacteria from the rumen fluid of Bali cattle and to evaluate their effect as microbial inoculants on the in vitro digestibility of rice straw. The experiment was conducted using a Completely Randomized Design (CRD) consisting of four treatments and four replications. The treatments included rice straw silage with the addition of 0%, 5%, 10%, and 15% of local microorganisms (MOL) derived from cattle rumen fluid. The observed variables included the isolation and identification of bacteria from the rumen fluid, and the assessment of in vitro digestibility, including Dry Matter Digestibility (DMD), Organic Matter Digestibility (OMD), Volatile Fatty Acid (VFA) concentration, and ammonia (NH₃) production. The results showed that the addition of rumen fluid MOL significantly (P<0.05) improved the digestibility parameters. The highest DMD (52.44%) and OMD (47.11%) were obtained from the treatment with 15% MOL. VFA and NH₃ concentrations also increased, indicating enhanced microbial activity and fermentation efficiency. The study concludes that MOL derived from cattle rumen fluid, particularly those containing Bacillus sp., is effective in improving the nutritional quality and digestibility of rice straw
Co-Authors Adolvina Kono Agustina Rosalia Saka Agustinus Akoit Alfred Nubatonis Azor Yulianus Tefa Batu, Matius S Batu, Matius Stafenus Berek, Gaudesisus Usi Bernadina Metboki, Bernadina Bira, Gerson Frans Bria, Deseriana Bria, Emilia Juliyanti Cornelis Astridino Nitbani Deni Yonathan Lulu Edi, Eduardus Eduardus Yosef Neonbeni Eka Maria Sanit Emerensiana Naes Febrya Christin Handayani Buan Fransiska Rika Fredy Kurniawan Funan, Selviana Ermalinda Gelyaman, Gebhardus Djugian Gerson Frans Bira Gradiana Yosefa Nana Hilarius Y Sikone Jefry Presson jefry Presson Kia, Kristoforus W Korbafo, Elisabeth Lukas Pardosi Mading, Ridwan Mako, Febriana Manek, Seprianus Septian Maria Fridolina Taek Maria Imaculata Mali Maria Rosanti Bani Mata, Meri Halsiana Matius Stefanus Batu Mere, Jenrigo Klaumegio Metriana Matilda Taus N. M. Obenu Naisau, Mikhael Rifantus Noviana Getrudis Abi Nugraha K. F. Dethan Oktovianus R Nahak Paulus Klau Tahuk Pieter Jackson Lopez Dethan Regina Seran Rika, Fransiska Risna Erni Yati Adu Saka, Agustina Rosalia Sakan, Sergius Sefrinus Maria Dolfi Kolo Sio Stefanus, Sio Sipayung, Boanerges Putra Taus, Jonisius Tea, Marselina Theresia Djue Tefa, Azor Y Teti, Roswita Thaal, Elisa M. Tse, Anastasia Wilda Lumban Tobing Yakobus Pffeferius Edvend Saba Agu Yohana Ivana Kedang Yuni Sine Zofar Agluis Banunaek