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All Journal Jurnal BETA (Biosistem dan Teknik Pertanian) Journal of Degraded and Mining Lands Management SC (Savana Cendana) : Jurnal Pertanian Konservasi Lahan Kering AGRIMOR Jurnal Teknik Sipil Indonesia Chimica Acta Jurnal Fisika : Fisika Sains dan Aplikasinya Jurna Beta Kimia
Kapitan, Origenes Boy
Politeknik Pertanian Negeri Kupang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics

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Improving mungbean growth in a semiarid dryland system with agricultural waste biochars and cattle manure Roberto I C O Taolin; Arnoldus Klau Berek; Eduardus Y Neonbeni; Syprianus Ceunfin; Origenes B Kapitan; Maksimus Y Seran
Journal of Degraded and Mining Lands Management Vol 6, No 1 (2018)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.968 KB) | DOI: 10.15243/jdmlm.2018.061.1441

Abstract

Mungbean (Vigna radiata L.) productivity in dryland decreased recently due to the soil fertility degradation. The objective of this study was to evaluate the effect of biochar types and cattle manure rates on the growth of mungbean in semi-arid dark soil. The factorial completely randomized block design 3 x 5 with four replicates was set to arrange treatments for the field trial. Two biochars (rice husk and sawdust) at 10 t/ha in combination with four rates of cattle manure (1, 3, 5 and 10 t/ha) and control (without biochar and cattle manure) were applied to the soil, incubated for three weeks and then planted with mungbean cv. Fore Belu. The results revealed that additions of biochar and cattle manure increased soil moisture and soil electrical conductivity by 2-4% and 0.15-0.20, respectively; decreased soil temperature and bulk density by 1-2oC and 0.2 g/cm3, respectively; increased plant height, stem diameter, root length, total, shoot and root dry weights by 4 cm, 0.1 cm, 5 cm, 7 g, 0.9 g and 6 g, respectively, compared to the control. The best growth of mungbean was obtained from the additions of sawdust biochar at 10 t/ha and cattle manure at 3 t/ha.
Faktor-Faktor yang Mempengaruhi Produksi dan Strategi Pengembangan Usahatani Bawang Putih di Kecamatan Miomaffo Barat, Kabupaten Timor Tengah Utara Marsianus Falo; Simon Juan Kune; Adeline Norawati Hutapea; Origenes Boy Kapitan
AGRIMOR Vol 1 No 04 (2016): AGRIMOR - October 2016
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.801 KB) | DOI: 10.32938/ag.v1i04.113

Abstract

Penelitian ini bertujuan untuk 1) mendeskripsikan keragaan usahatani bawang putih; 2) menganalisis kandungan unsur metabolid sekunder; 3) menganalisis faktor-faktor yang berpengaruh terhadap produksi usahatani bawang putih; 4) menganalisis pendapatan yang dipeoleh petani dari usahatani bawang putih, dan; 5) mengetahui startegi pengembangan usahatani bawang putih. Metode yang dugunakan adalah survei dan eksperimen laboratorium. Analisa data menggunakan analisis FTIR dan GC-MS, Analisis Cobb Douglass, analisis pendapatan dan Analisis SWOT. Hasilnya keragaan usahatani meliputi pengolahan lahan, persiapan bibit, penanaman, pemeliharaan, panen, pasca panen dan pemasaran. Unsur metabolid sekunder yang terdapat dalam bawang putih adalah adsiri, faktor-faktor yang berpengaruh terhadap produksi antara lain lahan, benih, tenaga kerja, pengalaman, dan pendidikan. Pendapatan yang diperoleh sebesar 534.429.503/musim tanam. Strategi pengembangannya adalah 1) strategi SO : kekuatan yang dimiliki adalah letak lahan yang strategis, kerjasama dalam kelompok, iklim yang mendukung dan pengalaman dan peluangnya dukungan dari PEMDA, permintaan pasar yang selalu ada, eban merupakan sentral/pusat produksi bawang putih di wilayah TTU; 2) strategi WO : meningkatkan modal berusahatani bawang putih, kurang promosi, sistim pemasaran dan penguasaan teknik budidaya yang masih rendah; 3) Strategi ST : kekuatan yang ada adalah letak lahan memiliki sendiri, kerja sama dalam kelompok, iklim yang mendukung dan pengalaman yang telah dimiliki; 4) Strategi WT : meningkatkan modal yang di miliki petani untuk dapat bersaing deengan usahatani bawang putih sejenis lainnya dari luar daerah Eban dan meningkatkan promosi untuk jangkauan pemasaran yang lebih luas lagi.
Molecular Docking of Chemical Compounds from n-Hexane Extract of Moringa oleifera Seeds with E.coli and S.aureus ATP Synthase Subunit C Fredy Saudale; Apriono Sutiono; Luther Kadang; Early G. Boelan; Origenes B Kapitan
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 13, No 2: December 2020
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v13i2.11536

Abstract

The development of new antibiotics is an urgent need amidst the reported increase in bacterial resistance. The n-hexane extracts of Moringa oleifera seeds have been known to have antibacterial effects against E.coli and S.aureus. However, the mechanism of inhibition and the protein from these bacteria targeted by the chemical compounds from n-hexane extracts of Moringa seeds remains elusive. ATP synthase subunit c (ATPase c) plays an important role in the synthesis and hydrolysis of ATP providing energy for bacterial growth. It is an attractive for the new antibiotic development. This study aims to computationally study the interaction between the chemical compound from n-hexane extract of Moringa seeds and ATPase c from E. coli and S. aureus that may shed the light on their inhibitory potentials using molecular docking method. The compound trans-9-octadecenoic acid shows the highest affinity energy with ATPase c from E. coli (-4.1 kcal/mol). Meanwhile, 9-cis-octadecanoic acid and glycerol-1,3-dioctadecanote show the highest interaction (-4.3 kcal/mol) with ATPase c from S.aureus. Nonetheless, these interaction energies are lower than a positive control Tomatidine on ATPase c E.coli (-6.9 kcal/mol) and S. aureus (-6.2 kcal/mol). Further in vitro assays are needed to validate their potential as novel antibacterial candidates.
In Vitro Antibakteri Ekstrak Etanol Puni (Zingiber zerumbet) Asal Pulau Timor Origenes Boy Kapitan; Laksmi Ambarsari; Syamsul Falah
Savana Cendana Vol 2 No 02 (2017): Savana Cendana (SC) - April 2017
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.73 KB) | DOI: 10.32938/sc.v2i02.82

Abstract

Puni (Zingiber zerumbet) is a wildly grown plant that used by Timorese people to treat ulcerative lesions in Timor Island. This study aims to determine the antibacterial activity of plants extracts and know the content of active compounds on the most active extracts of plants. Extraction of active compounds was carried out using four solvent ie n-hexane, ethyl acetate, ethanol, and aqueous solvent. Antibacterial activity test was done using the diffusion method of the four crude extract and extract with the highest activity was then used to find MIC value. Analyzed the content of the active compounds using LC-MS. It was found that ethanol extract had the highest antibacterial activity compared to other extracts. The MIC value of ethanol extract against S. aureus, B. Subtilis, E. coli, and P. aeruginosa were respectively determined to be 50, 100, 150, 250 mg mL-1. The result of LC-MS analysis showed that the ethanol extract contained zerumbone and gingerglycolipid B.
Viabilitas Benih Jagung Lokal yang diberi Tepung Daun Tembelekan (Lantana camara Linn) dalam Pencegahan Serangan Sitophilus zeamais Motsch (Coleoptera:Curculionidae) Selama Penyimpanan Anna Tefa; Alexander Kehi Klau; Origenes Boy Kapitan
Savana Cendana Vol 4 No 01 (2019): Savana Cendana (SC) - January 2019
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (288.362 KB) | DOI: 10.32938/sc.v4i01.547

Abstract

Sitophilus zeamais Motsch (Coleoptera: Curculionidae) commonly attack the maize grains during the storage period so as to reduce the seed viability. The tembelekan plant (Lantana camara linn) produce various secondary metabolites which can be used to protect maize grains from the maize weevil attack.. Investigation was carried out to determine the effect of the tembelekan leaf flour (L. camara Linn) in controlling the maize weevil and to study the effect of tembelekan leaves in maintaining viability of maize grains during storage. This study uses a completely randomized design with factorial design. The first factor is the tembelekan flour dosege which consist of four levels i.e T0: without flour, T1: 10% w/w, T2: 15% w/w, T3: 20% w/w. The second factor is exposure time which consist of three levels i.e M0: 1 week, M1: 2 weeks, dan M2: 3 weeks. The results showed that the interaction of the treatment of tembelakan leaf flour and storage period was able to maintain the maize seed viability and vigor parameters i.e maximum germination potential in the amount of 97.33%, seedling growth rate in the amount of 19.06%etmal, seedling vigor index in the amount of 71% and seedling dry weight in the amount of 5.4 grams.
Biochar dari Biomassa Kusambi, Akasia, dan Kayu Putih sebagai Media Semai Benih Selada (Lactuca sativa L.) Origenes Boy Kapitan; Anna Tefa; Dewi S. Hede; Filogus N. Payon
Savana Cendana Vol 4 No 02 (2019): Savana Cendana (SC) - April 2019
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.262 KB) | DOI: 10.32938/sc.v4i02.620

Abstract

Seedling media is one of the factors that influence seed germination. The requirements for seed germinating are media constituent material have a porosity for water retention and air circulation. One of the porous material that can be used as seedling media is biochar. Characteristic of biochar depend on the pyrolisis temperature and the type of biomass. This study aims to determine the percentage conversion of biomass from 3 types of woody biomass to biochar, the chemical characteristics of biochar resulting from pyrolysis at 3 different temperatures, viability of lettuce seeds on seedlings media with biochar, soil, and compost. This study used a factorial completely randomized design that was repeated 3 times. The first factor is the type of woody biomass which consists of 3 levels, namely lac tree, eucalyptus, and acacia. While the second factor is the pyrolisis temperature which consists of 3 temperature variations namely 350 oC, 450 oC, and 550 oC. The results showed that the higher percentage of biochar yield was produced on the type of lac tree with pyrolysis temperature at 350 oC. Biochar pH is alkaline except for biochar from lac tree with pyrolysis temperature at 350 oC. The highest EC value is produced by eucalyptus biochar with a pyrolysis temperature at 550 oC. The type of eucalyptus biochar has C-total, N, P, and K content greater than the other, while the largest CEC value is produced by the type of lac tree biochar. The best seed germination of lettuce is produced by eucalyptus biochar at pyrolysis temperature on 450 oC. Generally, the type of acacia wood biochar gives the best germination in all pyrolisis temperatures.
Identifikasi Sifat Kimia Tanah Entisol di Lahan Kering Desa Sekon Kecamatan Insana Kabupaten Timor Tengah Utara – NTT Maria Angelina Tuas; Krisantus Tri Pambudi Raharjo; Origenes Boy Kapitan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 2 (2022): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2022.v10.i02.p22

Abstract

Abstrak Kandungan unsur hara mempengaruhi kesuburan tanah dan produktivitas pertanian. Sebagian besar lahan pertanian di Desa Sekon mengalami gagal panen. Unsur hara dibutuhkan untuk mendukung pertumbuhan dan perkembangan tanaman dalam jumlah tertentu sehingga dilakukan analisis kandungan unsur hara untuk mengetahui kesesuaiannya terhadap pertanian. Penelitian ini mengidentifikasi sifat kimia tanah entisol di Desa Sekon, Kecamatan Insana, Kabupaten Timor Tengah Utara, NTT. Penelitian ini merupakan penelitian deskriptif kualitatif yang bertujuan menyajikan gambaran mengenai keadaan kimia tanah entisol di Desa Sekon menggunakan metode survei dan dianalisis laboratorium. Hasil penelitian menunjukkan bahwa kadar bahan organik tergolong rendah dengan persentase rata-rata berkisar antara 0,09 – 1,4%. Status keasaman tanah cenderung netral sampai alkalin dengan pH rata-rata 7,32. Kandungan C-organik bervariasi dari sangat rendah sampai rendah dengan persentase nilai rata-rata 0,57 %. Kandungan N-total sangat rendah dengan persentase rata-rata 0,09 %. . Kandungan P tergolong sangat rendah sampai sedang dan kalium tergolong sangat rendah sampai rendah dengan rata-rata 0,34 me/100 g. Abstract Nutrient content affects soil fertility and agricultural productivity. Most of the agricultural land in Sekon Village experienced crop failure. Nutrients were needed to support plant growth and development in a certain amount so the analysis of the nutrient content was carried out to determine their suitability for agriculture. This study identified entisol soils in Sekon Village, Insana District, North Central Timor Regency, NTT. This research was a qualitative descriptive study aiming to present an overview of the chemical state of the entisol soil in Sekon Village using survey methods and laboratory analysis. The results showed the organic matter content was low with an average percentage ranging from 0.09 to 1.4%. Soil acidity status tends to be neutral to alkaline with an average pH of 7.32. The content of C-organic varied from very low to low with an average of 0.57%. The content of N-total was very low with an average percentage of 0.09%. P content was classified as very low to moderate and potassium was classified as very low to low with an average of 0.34 me/100 g.
Pengaruh Ketinggian Genangan dan Jenis Pupuk Teh Kompos terhadap Pertumbuhan dan Hasil Pakcoy (Brasicca rapa L.) Secara Hidroponik Krisantus Tri Pambudi Raharjo; Origenes Boy Kapitan; Pius Robertus Nahak
Savana Cendana Vol 8 No 4 (2023): Savana Cendana (SC) - October 2023
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/sc.v8i4.1307

Abstract

Pakcoy (Brassica rapa L.) is a type of vegetable plant that belongs to the Brassicaceae family. The pakcoy plant originates from China and has been widely cultivated after the 5th century in China. Besides being a natural fertilizer, compost tea can also function as a natural pesticide, because it can restore soil fertility naturally and increase plant resistance to pests and diseases. The application of compost tea in addition to increasing the nutrient content of the soil can also increase the population of beneficial microorganisms to increase soil fertility. Application on leaves, can suppress the development of pathogens that cause leaf diseases. Research has been carried out in the faculty’s garden. Timor University Agriculture, Sasi Village, Kefamenanu City District, TTU Regency. The time needed to complete the research from April to May 2018. The materials to be used in this study are as follows; pakcoy seeds, husk charcoal, dulang, AB MIX nutrition, 8.5 cm diameter bucket, guano fertilizer, talirafia, the tools to be used in the research are as follows; machete, crowbar, scissors, cutter, hammer, nails, saw, ruler, book/pen. This study will use a factorial completely randomized design (CRD) (3 x 3) repeated 3 times. The first factor is the height of the puddle (A) which consists of 3 levels, namely: 3 cm (A1) Gamal tea compost, 6 cm (A2) Guano tea and 9 cm. The second factor is the type of organic liquid fertilizer, namely: AB Mix (J1), guano (J2), and Gamal Leaf Compost (J3). The treatment combinations were A1J1, A2J1, A3J1, A1J2, A2J2, A3J3, A1J3, A2J3, and A3J3. The results showed that there was an interaction of the effect of inundation height and the type of compost tea fertilizer on the parameters of leaf number and leaf area, but there was no interaction on crop yields. The data showed the highest moisture content and neutral soil pH, Husk Hydrogen Potential, highest growth, plant height, number of leaves, fresh weight of the heaviest plant, total fresh weight, fresh weight of husk, obtained from a water height of 3 cm and the addition of guano compost tea.
Uji Stabilitas Polymer Inclusion Membrane dari Polimer Pendukung PVC, Ekstraktan D2EHPA, dan Plasticizer Asam Oleat pada Kondisi Asam Rensini, William Antoni; Kadang, Luther; Lapailaka, Titus; Naat, Johnson Nune; Pingak, Redi Kristian; Kapitan, Origenes Boy; Nitti, Fidelis
Jurnal Beta Kimia Vol 4 No 1 (2024): Volume 4, Nomor 1: Mei 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v4i1.15351

Abstract

Polymer Inclusion Membrane (PIM) merupakan membran cair generasi terbaru untuk pemisahan berbagai jenis komponen kimia organik dan anorganik. Stabilitas PIM merupakan faktor yang sangat penting untuk efektivitas pemisahan yang berkelanjutan. Penelitian ini dilakukan untuk menyelidiki kestabilan PIM yang dibuat dari PVC sebagai polimer pendukung, D2EHPA sebagai ekstraktan, dan asam oleat (AO) sebagai plasticizer dalam HCl 2,5 M. Hasil penelitian menunjukkan komposisi PIM optimum adalah 50% PVC, 40% D2EHPA, dan 10% AO yang menunjukkan karakteristik fisik yang ideal seperti tipis, transparan, fleksibel dengan permukaan yang tidak berminyak. Hasil penelitian menunjukkan penurunan berat PIM yang direndam dalam HCl 2,5 M lebih kecil dibandingkan dengan penurunan berat PIM yang direndam dalam air selama 7 hari. Hasil ini menunjukkan bahwa PIM lebih stabil dalam kondisi asam dibandingkan dalam air (netral). Perbandingan karakteristik kimia PIM sebelum dan setelah uji stabilitas menunjukkan PIM yang direndam dalam air mengalami kehilangan fase cair selama proses uji stabilitas. Perbedaan ini terkonfirmasi melalui perbedaan karakteristik fisika PIM sebelum dan sesudah uji stabilitas. Secara keseluruhan, PIM dengan komposisi optimum 50% PVC, 40% D2EHPA, dan 10% AO disarankan untuk digunakan dalam pemisahan pada kondisi asam untuk mempertahankan stabilitas dan efisiensi pemisahannya.
STABILITAS POLYMER INCLUSION MEMBRANE DARI POLIMER PENDUKUNG PVC DAN EKSTRAKTAN D2EHPA DALAM ASAM KLORIDA Modhe, Katarina; Ledoh, Sherlly M. F.; Lapailaka, Titus; Kadang, Luther; Naat, Johnson N.; Pingak, Redi K.; Kapitan, Origenes B.; Nitti, Fidelis
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 9 No 1 (2024): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v9i1.15377

Abstract

Polymer Inclusion Membrane (PIM) merupakan generasi terbaru membran cair yang dirancang khusus untuk pemisahan berbagai jenis komponen kimia organik dan anorganik. Stabilitas PIM menjadi faktor kunci untuk memastikan efektivitasnya dalam proses pemisahan yang berkelanjutan. Penelitian ini bertujuan untuk menginvestigasi kestabilan PIM yang terbuat dari 60% PVC sebagai polimer pendukung dan 40% D2EHPA sebagai ekstraktan dalam larutan uji asam klorida (HCl) 2,5 M. Hasil penelitian PIM dengan komposisi ini menunjukkan karakteristik fisiknya yang ideal seperti tipis, transparan, fleksibel dengan permukaan yang tidak berminyak. Hasil uji stabilitas berturut-turut menunjukkan penurunan berat PIM yang dibiarkan pada udara terbuka, dalam air, dan dalam 2,5 M HCl selama 7 hari sebesar 0,92%; 10,15% dan 4,30%. Trend ini secara umum menunjukkan bahwa PIM dengan komposisi 60% PVC dan 40% D2EHPA memiliki kestabilan yang lebih baik di dalam larutan yang bersifat asam dibandingkan dengan larutan yang bersifat netral. Perbandingan karakteristik spektra FTIR PIM sebelum dan setelah uji stabilitas menunjukkan PIM yang direndam di dalam air mengalami kehilangan sebagian besar ekstraktan D2EHPA selama proses uji stabilitas. Perbedaan karakteristik spektra FTIR PIM sebelum dan setelah uji stabilitas dengan direndam di dalam air ini juga terkonfirmasi melalui perbedaan karakteristik fisika PIM sebelum dan sesudah uji stabilitas yang meliputi water contact angle, water uptake, tensile strength dan % elongation. Secara keseluruhan, hasil penelitian ini mengindikasikan bahwa PIM yang dibuat dengan komposisi PVC 60% dan D2EHPA 40% disarankan untuk digunakan dalam pemisahan pada kondisi asam untuk mempertahankan stabilitas dan efisiensi pemisahannya.
Co-Authors Adeline Norawati Hutapea Alexander Kehi Klau Aloysius Rusae, Aloysius Apriono Sutiono Arnoldus Klau Berek Ceunfin, Syprianus Dewi S. Hede Dina Tiara Kusumawardhani Eduardus Yosef Neonbeni Effendi Tri Bahtiar Erly Grizca Boelan Fidelis Nitti Filogus N. Payon Fredy Saudale Kaet, Vinsensius Olin Krisantus Tri Pambudi Raharjo Kune, Simon Juan LAKSMI AMBARSARI Lapailaka, Titus Luther Kadang Maksimus Y Seran Marsianus Falo Modhe, Katarina Naat, Johnson N. Pingak, Redi Kristian Pius Robertus Nahak Rensini, William Antoni Rizky Hidayatullah Roberto I C O Taolin Sherlly Ledoh Syamsul Falah Tefa, Anna Tuas, Maria Angelina