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All Journal IPTEK Journal of Proceedings Series Jurnal Sains Dan Teknologi (SAINTEKBU) Chimica et Natura Acta INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Saintek Lahan Kering Jurnal Redoks Molluca Journal of Chemistry Education (MJoCE) Bakti Cendana: Jurnal Pengabdian Masyarakat SEHATI: Jurnal Kesehatan Jurnal Akademika Kimia Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Journal of Chemical Science and Application Jurnal Akademika Kimia Jurnal Pengabdian Masyarakat Inovasi Indonesia
Edi, Eduardus
Fakultas Pertanian, Universitas Timor
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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Karakterisasi Komposisi Mineral Mud Vulcano Desa Napan Kawasan Perbatasan Republik Indonesia – Republic Democratic Timor Leste dan Potensi Pemanfaatannya Gebhardus Djugian Gelyaman; Eduardus Edi
Chimica et Natura Acta Vol 8, No 2 (2020)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v8.n2.29514

Abstract

Penelitian karakterisasi kimia terhadap lumpur volcano (mud volcano) desa Napan yang merupakan kawasan perbatasan negara Indonesia dan Timor Leste telah dilakukan. Karakterisasi dilakukan menggunakan instrumentasi XRD, FTIR, XRF. Karakterisasi bertujuan untuk mengetahui komposisi mineral-mineral dalam lumpur sehingga dapat mengeksplorasi potensi pemanfaatan lumpur tersebut didasarkan pada studi literatur riset-riset sejenis yang telah dilakukan. Hasil karakterisasi memperlihatkan penyusun lumpur adalah Cr2O3, Re2O7, ZnO, V2O5, Rb2O, CuO, ZrO2, BaO, SrO, MnO, TiO2, CaO, K2O, Al2O3, Fe2O3, SiO2 yang menyusun mineral-mineral besar yaitu kaolinit, gibsit, kuarsa, kristobalit, ilit, hematit, alumina (corundum). Terdapat tiga mineral yang mendominasi kandungan lumpur yaitu SiO2 (52%) dikuti Fe2O3 (±20,55%) dan Al2O3 (± 15,5%).  Lumpur tersebut dapat dimanfaatkan untuk berbagai keperluan seperti subtituen semen, adsorben, katalis, sumber silika, zeolite, briket, silika gel dan aerogel.
Aliphatic Biomakerof Crude Oil from Juwata, Tarakan, North Kalimantan Endah Mutiara Marhaeni Putri; Eduardus Edi; R. Y. Perry Burhan; Yulfi Zetra; Agus Wahyudi; Zjahra Vianita
IPTEK Journal of Proceedings Series No 4 (2017): 2nd International Seminar on Chemistry 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.914 KB) | DOI: 10.12962/j23546026.y2017i4.3075

Abstract

Characteristic organic geochemistry of crude oil Juwata, Tarakan, North Kalimantan provide information about the depositional sedimental environment and maturity of the oil. Crude oil was extracted with n-hexane (50: 2) for 24 hours to separate the crude oil with asphaltene, and if precipitation does not separate perfectly then centrifuged. Extracts were then refractionated using column chromatography according to the methods McCharty base. Fractionation results are obtained in the form of the neutral fraction, the acid fraction and polar fraction. Neutral fraction separated with KLTP method and aliphatic fraction and aromatic fractions. Aliphatic fraction subsequently analyzed by GC-MS. GC-MS analysis aliphatic fraction of n-alkanes in the form of compounds, and hopane, bikadinancompounds. The pattern of distribution of n-alkanes which consists of a range of C-17 to C-33. Carbon distribution with a range of C-21 to C-33 is dominating compared to the C-17 to C-20. This distribution pattern indicates the source of organic matter from terrestrial land wax component derived from higher plants. Hopane presence of compounds in crude oil aliphatic fractionsJuwata Tarakan, North Kalimantan analyzed by fragmentogram m/z = 191. Hopane biomarker provide that information during the sedimentation stage diagenesis these compounds are degraded and stereochemical changes towards a stable isomer form, configuration changes 17α (H), 21β (H) during the process of diagenesis to a stable isomer which is 17 α (H), 21β (H) or 21β (H), 17 α (H) indicates that oil comes from the old sediments. Biomarka bikadina identified according fragmentogram m/z = 191 multiple ion fragment m/z = 109.191, 369, 397 and ion molecular m/z = 412 showed the characteristic fragment bikadinna compound. Biomarka bikadina give information influx of organic material terrestrial region. The compounds showed crude oils biomarker Juwata Tarakan, North Kalimantan derived from terrestrial depositional environments.
Hidrolisis Ampas Biji Sorgum dengan Microwave untuk Produksi Gula Pereduksi sebagai Bahan Baku Bioetanol Sefrinus M. D. Kolo; Eduardus Edi
Saintek Lahan Kering Vol 1 No 2 (2018): JSLK Desember 2018
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.235 KB) | DOI: 10.32938/slk.v1i2.596

Abstract

Sorghum is a cereal plant that can grow in various environmental conditions so that it is potential to be developed, especially on dry climate marginal land in Indonesia. Sweet sorghum has great potential to be used as raw material for ethanol besides sugar cane. Cultivation of sweet sorghum has shifted from food and feed raw materials to industrial raw materials, both small and large scale. This study aims to obtain reducing sugar levels as raw material for bioethanol through hydrolysis using a microwave. As much as 10 grams of sorghum powder is suspended with dilute H2SO4 solution of 0.1 N, 0.3 N and 0.5 N as much as 250 mL and then heated using microwave irradiation at a temperature of 200 oC for 20 and 40 minutes. The liquid fraction produced by hydrolysis was analyzed by reducing sugar content with the DNS method using a UV-Vis spectrophotometer. The results obtained showed that the optimum hydrolysis conditions using microwave were achieved at concentrations of H2SO4 0.5 N at 200 oC and hydrolysis time at 40 minutes. Reducing sugar content of 42.71 mg / L. The sugar content rises by 19.95% compared to the hydrolysis time of 20 minutes.
PERMAINAN SAINS BAGI SISWA-SISWI SEKOLAH SMP SWASTA GITA SURYA DAN SMA NEGERI 1 EBAN KECAMATAN MIOMAFO BARAT KABUPATEN TIMOR TENGAH UTARA Sefrinus M.D. Kolo; Yohana Ivana Kedang; Maria M Kolo; Jefry Presson; Elisabeth Korbafo; Eduardus Edi; Noviana M Oebenu; Regina Seran
Bakti Cendana Vol 2 No 1 (2019): Bakti Cendana: Jurnal Pengabdian Masyarakat
Publisher : LPPM Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.191 KB) | DOI: 10.32938/bc.2.1.2019.13-22

Abstract

Community service was held on November 17, 2018 at Gita Surya Private Middle School and Eban 1 Public High School. The material for the dedication of science games is fruit electricity, electrolyte solution, caramelization of sugar, magic money, electric magnets, differences in air pressure, floating and floating floating events, volcanic eruptions, mothballs moving in water, natural acid-base indicators. Science demonstration activities carried out with methods of performance, lectures and discussions. Students interact actively, not rigidly, energetically marked by the number of questions that arise, and students are very enthusiastic in answering questions given by the service team and the high interest of students to be involved in the practice of science demonstrations.
Potensi Ekstrak Tanaman Sebagai Pestisida Alami Di Desa Salu Kecamatan Miomafo Barat Kabupaten TTU Jefry Presson; Gebhardus D Gelyaman; Yohana Ivana Kedang; Sefrinus Maria D. Kolo; Regina Seran; Eduardus Edi; Maria Magdalena Kolo
Bakti Cendana Vol 2 No 2 (2019): Bakti Cendana: Jurnal Pengabdian Masyarakat
Publisher : LPPM Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (805.759 KB) | DOI: 10.32938/bc.2.2.2019.71-75

Abstract

Devotion with the title of potential plant extracts as natural pesticides in Salu village, Miomafo Barat district, TTU district was held in November 2018. The purpose of this service was to provide knowledge on how to increase food production through eradicating pests, providing knowledge about the advantages of natural pesticides compared to synthetic pesticides, and make soursop leaf extract as a natural pesticide. The main target of this activity is the farmers who are conducted through methods of lecture, brochure distribution, and product manufacturing training. This service activity was conducted in 3 sessions. The first session was socialization of ways to increase food production through eradicating pests. The second session is a socialization of the advantages of natural pesticides compared to synthetic pesticides. Making soursop extract as a natural pesticide is the third session that closes all the series of devotion. In addition to providing questions, farmers also provide personal experiences that are useful for the development of science. The coordination of the making of soursop extract indicates the high enthusiasm of the farmers in Salu village towards this devotion. The final product in this activity is soursop leaf extract which is ready to be applied to plants.
KARAKTERISASI ASAL-USUL DAN TINGKAT KEMATANGAN BIOMARKA MINYAK MENTAH TARAKAN-KALIMANTAN UTARA Eduardus Edi
SAINTEKBU Vol 9 No 2 (2017): Volume 9 No. 2 Mei 2017
Publisher : KH. A. Wahab Hasbullah University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.35 KB) | DOI: 10.32764/saintekbu.v9i2.111

Abstract

Karakteristik geokimia organik (biomarker) memberikan informasi tentang asal usul, lingkungan pengendapan dan kematangan minyak. Karekterisasi Minyak mentah diekstrak dengan pelarut n-heksan dengan perbandingan n-heksan: minyak mentah (50: 2) selama 24 jam untuk memisahkan asphaltene dari minyak mentah. jika endapan tidak terpisah dengan sempurna maka disentrifugasi dengan kecepatan 2400 rpm dalam waktu 20 menit. Hasil ekstrak minyak mentah murni difraksinasi dengan menggunakan kromatografi kolom metode McCharty. Hasil ekstrak dari pengoloman diperoleh fraksi netral, fraksi asam dan fraksi polar. Fraksi netral dipisahkan dengan metode KLTP dan ekstrak difraksinasi menjadi komponen hidrokarbon yang terdiri dari fraksi alifatik dan fraksi aromatik, selanjutnya dianalisis fraksi aromatik dengan GCMS. Hasil analisis GCMS pada fraksi aromatik diperoleh senyawa alkil benzene, naftalena,  fenanterna dan kadelan, senyawa –senyawa yang diperoleh dianggap sebagai informasi turunan dari produk alami tanaman tingkat tinggi, bakteri, penanda asal usul lingkungan pengendapan dan kematangan minyak. Kata kunci - Biomarka, Juwata, minyak mentah, GCMS.
Kajian Geofisika dan Geokimia Mangan di Desa Oetalus Kabupaten TTU Regina Seran; Eduardus Edi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): IJAP Volume 11 ISSUE 01 YEAR 2021
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.46447

Abstract

Bijih mangan merupakan bahan galian yang banyak terdapat di kabupaten TTU. Proses penambangan mangan di desa Oetalus-TTU hingga saat ini masih dilakukan secara tradisional oleh masyarakat tanpa mengetahui pola penyebaran bijih mangan. Harga jual mangan pun tergolong rendah karena tidak ada informasi kepada masyarakat mengenai kualitas mangan yang ada di TTU. Oleh karena itu, penelitian ini dilakukan untuk identifikasi penyebaran mangan di lokasi penelitian desa Oetalus secara geolistrik dan melakukan karakterisasi secara geokimia untuk mengetahui karakteristik mineral mangan. Metode yang digunakan untuk identifikasi penyebaran mangan adalah metode geolistrik tahanan jenis konfigurasi schlumberger. Metode ini dilakukan dengan cara menginduksikan arus listrik ke bumi melalui 2 buah elektroda arus, kemudian diukur beda potensial maka akan diperoleh harga tahanan jenis semu berdasarkan susunan elektroda. Nilai tahanan jenis semu yang terukur dipengaruhi oleh adanya perbedaan nilai tahanan jenis setiap lapisan batuan bawah permukaan. Alat yang digunakan untuk pengambilan data geolistrik adalah 1 set resistivitymeter OYO MCOHM-EL model 2119. Metode karakterisasi secara geokimia menggunakan XRF untuk mengetahui komposisi unsur dan XRD untuk mengetahui jenis mineral mangan. Berdasarkan hasil penelitian diperoleh kisaran nilai tahanan jenis mangan di Oetalus yaitu 9-30 Ωm dengan kedalaman lapisan diduga antara 1-20 meter. Analisis menggunakan XRF diperoleh komposisi unsur mangan sebesar 94,2 %. Kadar mangan di oetalus ini sangat potensial dan ekonomis untuk ditambang, karena kadar rata-rata ekonomis bijih mangan adalah 45%. Analisis menggunakan XRD diperoleh jenis mineral mangan di Oetalus adalah pyrolusite (MnO2).
Identification Chemical Compositions of Lemongrass Plant (Cymbopogon nardus L.) Dawan Tribe, Oenenu Village, North Central Timor Regency Noviana Obenu; Eduardus Edi; Risna E. Adu
Jurnal Akademika Kimia Vol. 10 No. 2 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.673 KB) | DOI: 10.22487/j24775185.2021.v10.i2.pp93-97

Abstract

Lemongrass (Cymbopogon nardus L.) is a local natural resource used by the Dawan tribe as an alternative for mosquito repellent. The utilization of these plants cannot be separated from the content of compounds found in these plants. Therefore, it is necessary to analyze the content of bioactive compounds from lemongrass (Cymbopogon nardus L.). This research method includes sample preparation, isolation and identification of compounds, and antioxidant activity analysis. The results of this study that there were three main components of citronella oil, namely geraniol, citronellol, and citronellal, with a higher percentage of geraniol, namely 18.82%. The compounds contained in lemongrass oil have a weak antioxidant activity with IC50 681.48 mg/mL.
Analisis Fitokimia Ekstrak Pelarut Kulit Akar Tumbuhan “At Anonse” (Annona reticulata L.) Maria Kasilda Elu; Oktovianus Kasa; Maria Aprista Manikin; Noviana Mery Obenu; Eduardus Edi
Saintek Lahan Kering Vol 6 No 1 (2023): JSLK JUNI 2023
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/slk.v6i1.2188

Abstract

Medicinal plants are plants that can be used as medicine or medicinal ingredients to treat various diseases. One of the plants used as a medicinal plant is Annona reticulata L. This study aims to determine the content of secondary metabolites in the solvent extract of the root bark of the plant “At Anonse” (Annona reticulata L.). The stages of this research were sample preparation, extraction, and phytochemical analysis. Extraction was carried out by maceration using n-hexane, ethyl acetate, and methanol as solvents. Phytochemical analysis was carried out qualitatively based on changes in color, precipitate and foam. The results of the phytochemical analysis test showed that the groups of compounds contained in the root bark of the plant “At Anonse” were triterpenoids, tannins, flavonoids, phenolics, alkaloids and saponins.
Uji Aktivitas Larvasida Minyak Daun Kemangi (Ocinum sanctum L.) Asal Pulau Timor Terhadap Larva Nyamuk Aedes Aegypti Beatrik Hoar; Sefrinus Maria Dolfi Kolo; Eduardus Edi
SEHATI: Jurnal Kesehatan Vol 3, No 2 (2023)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/sehati.v3i2.25

Abstract

The tropical climate in regions like Timor Island can lead to the proliferation of disease-carrying mosquitoes such as Aedes aegypti, which are responsible for diseases like dengue fever, filarial infections, and elephantiasis. Dengue Hemorrhagic Fever (DHF) is a major concern in Indonesia, particularly in East Nusa Tenggara (NTT). This research aimed to assess the effectiveness of basil leaf oil (Ocimum Sanctum L.) as a natural substitute for electric mosquito repellents. The study focused on evaluating its impact on the mortality of Aedes aegypti mosquito larvae and determining the LC50 (Lethal Concentration 50) of basil leaf oil against these larvae. Basil leaves (Ocimum Sanctum L.) were used to extract basil leaf oil through distillation, followed by separating water and oil. The study employed a randomized block design (RAK) to conduct experiments on mosquito larvae. The larvicidal activity of basil leaf oil was tested using 5 different concentrations: 750 ppm, 1000 ppm, 1500 ppm, 2000 ppm, and 5000 ppm. A control group containing 70% alcohol was also included. Ten Aedes aegypti mosquito larvae were transferred from a holding container to a beaker containing 100 mL of distilled water mixed with basil leaf oil at the specified concentrations. The larvae were observed at 5, 10, 15, and 20-minute intervals to track the mortality rate of the larvae over time. The findings of the research demonstrated that basil leaf oil (Ocimum Sanctum L.) exhibited larvicidal activity against Aedes aegypti mosquito larvae. The mortality rate of the larvae increased as the concentration of basil leaf oil increased, with the most significant impact observed at a concentration of 2000 ppm. This study highlights the potential of basil leaf oil as a natural larvicide against Aedes aegypti mosquito larvae, which are responsible for transmitting diseases like dengue fever. The results suggest that basil leaf oil could serve as an alternative or complementary method to conventional mosquito control strategies. Given the importance of controlling mosquito-borne diseases, the use of locally available plant-based substances like basil leaf oil could contribute to public health efforts, particularly in regions like East Nusa Tenggara (NTT). Further research and development in this area could lead to the creation of effective and environmentally friendly mosquito control products.
Co-Authors Agus Wahyudi Beatrik Hoar Benu, Didi Prasetyo Bria, Emilia Juliyanti Christanti, Cindy Claudia Endah Mutiara Marhaeni Putri Gelyaman, Gebhardus Djugian Jefry Presson Kolo, Maria Magdalena Korbafo, Elisabeth Kutiom, Richardus Lite, Asriyana Maria Aprista Manikin Maria Kasilda Elu Maria M Kolo Matius Stefanus Batu Mere, Janrigo Klaumegio N. M. Obenu Noviana M Oebenu Novriana Bete Obenu, Noviana Mery Oktovianus Kasa Patrisius M. Bria R.Y. Perry Burhan, R.Y. Perry Regina Seran Regina Seran Risna Erni Yati Adu Sefrinus Maria Dolfi Kolo Siki, Kresensia Talan, Veronika Sofia Jaquelin Tefa, Maria Selestina Yohana Ivana Kedang Zetra, Yulfi Zjahra Vianita