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All Journal VALENSI Natural B Jurnal Pengabdian Masyarakat Peternakan KOVALEN: Jurnal Riset Kimia Jurnal Penelitian Pertanian Terapan Bioma : Jurnal Biologi dan Pembelajaran Biologi Jurnal Ilmu Peternakan Terapan
Abner Tonu Lema
Politeknik Pertanian Negeri Kupang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Immunology & microbiology Veterinary

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ANALISIS KANDUNGAN POLIFENOL PADA EKSTRAK TUNAS BAMBU BETUNG (Dendrocalamus asper) Padamani, Eklopas; Ngginak, James; Lema, Abner Tonu
BIOMA Vol 5, No 1 (2020): BIOMA : JURNAL BIOLOGI DAN PEMBELAJARAN BIOLOGI
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/bioma.v5i1.3688

Abstract

Kelompok senyawa polifenol memiliki kemampuan sebagai antioksidan. Dalam tulisan ini peneliti melakukan skrining polifenol pada sampel tunas bambu betung (Dendrocalamus asper) yang diperoleh dari desa Mataru Kabupaten Alor. Pengukuran kadar polifenol secara kualitatif menggunakan larutan FeCl3 1% dan pengujian secara kuantitatif menggunakan metode spektrofotometeri UV-Vis (CE 2021). Hasil pengukuran secara kualitatif menunjukan bahwa pada sampel terkandung senyawa polifenol. Hal ini diperkuat dengan adanya indikator pembentukan warna coklat kehitaman yang pekat. Pengukuran secara kuantitatif menggunakan Spektrofotometri UV-Vis (CE 2021) menunjukan bahwa pada sampel terkandung senyawa polifenol dengan total kadar 8,065 mg/L. Penelitian ini diharapkan dapat memberikan informasi bagi bidang farmakologi tentang tunas bambu betung sebagai salah satu sumber polifenol dan masyarakat tentang pemanfaatan tunas bambu betung sebagai salah satu sumber polifenol dalam pengawetan bahan makanan yang mudah teroksidasi.
Development of Spectrophotometric Methods for Iodide Determination Using Hydrogen Peroxide (H2O2) as Oxidizing Abner Tonu Lema; Hermin Sulistyarti; Atikah Atikah
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.801 KB) | DOI: 10.21776/ub.natural-b.2014.002.04.2

Abstract

Serious disorders of iodine deficiency can cause irreversible cretinism, pregnancy complications, goiter, compromised thyroid hormone production, mental impairment and decreasing cognitive function. In order to detect early indication of Iodine Deficiency Disorders (IDD) a development of simple spectrophotometric method for iodide  determination  is proposed using hydrogen peroxide (H2O2) as an oxidizing agent. Determination of iodide is based on the oxidation reaction of I- to I2 that form blue  complex compound I2-starch. The blue color intensity of the complex I2-starch  produced was measured at wavelength of 611 nm. Several parameters were optimized: complex formation and oxidation time of iodide, the optimum concentration of oxidizing agent, H2SO4, starch and effect of interfering ions (chloride, bromide, thiocyanate), with optimum conditions obtained of respectively: 10 minute, H2O2 0.1 M, H2SO4 0.05 M, starch 0.2 %. Under these condition, the method showed linearity of 5 - 60 ppm, limit of detection and quantification of 0.62 and 2.09 mg/L, respectively. This method has been successfully applied to synthetic and urine samples and can be recommended for the detection of iodide in patients hyperthyroidism and KI tablets.
PENINGKATAN PRODUKTIFITAS TERNAK BABI MELALUI PENDEKATAN MODEL KEMITRAAN PROPORSIONAL (PRO MITRA) DI KELOMPOK TANI SEHATI KECAMATAN KUPANG TIMUR, KABUPATEN KUPANG. Petrus Malo Bulu; Andrijanto H. Angi; Redempta Wea; Theresia Nur Indah Koni; Abner Tonu Lema; I Ketut Jaya
Jurnal Pengabdian Masyarakat Peternakan Vol 4, No 2 (2019): Jurnal Pengabdian Masyarakat Peternakan
Publisher : Jurusan Peternakan Politeknik Pertanian Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (942.743 KB) | DOI: 10.35726/jpmp.v4i2.333

Abstract

Program Kemitraan Masyarakat yang dilakukan pada Kelompok Tani Sehati di Desa Tuatuka Kabupaten Kupang merupakan Program Pengabdian Masyarakat yang bertujuan untuk meningkatkan pengetahuan dan keterampilan anggota mitra kelompok tani tentang model kemitraan proporsional dan manajemen penggemukan ternak babi dalam upaya meningkat produktifitas ternak babi. Kelompok tani Sehati menjadi mitra atas permintaan kelompok tani tersebut dan dengan mempertimbangkan bahwa usaha penggemukan ternak babi merupakan rutinitas yang dijalankan dalam keseharian mereka. Kegiatan beternak babi anggota kelompok tani tersebut selama ini masih bersifat tradisional dan penggunaan bibit dalam jumlah dan kualitas yang rendah, dengan menggunakan pakan limbah rumah tangga, modal yang terbatas, serta penjualan yang tidak menentu. Kondisi tersebut berdampak pada semangat beternak mereka yang pada akhirnya mempengaruhi keuntungan mereka dari ternak babi. Metode pelaksanaan kegiatan dilakukan melalui penyuluhan, diskusi, demonstrasi plot, pendampingan, serta monitoring dan evaluasi. Implementasi kegiatan dilakukan melalui diseminasi informasi model kemitraan proporsional, manajemen kesehatan, dan tata laksana penggemukan (kandang dan pakan). Hasil yang dicapai dari kegiatan adalah peningkatan pengetahuan, kesadaran, dan keterampilan anggota mitra dalam menerapkan model kemitraan proporsional serta manajemen penggemukan ternak babi dalam usaha meningkatkan produktifitas ternak babi. Luaran yang dihasilkan, sexlviv.com/en/ antara lain: bibit babi penggemukan sebanyak 10 ekor, dokumen Nota Kesepahaman atau Memorandum of Understanding (MOU) kemitraan selama 3 tahun pelaksanaan, dan ternak babi penggemukan layak jual pada masa pemeliharaan 5 bulan serta bobot akhir 85 – 100 kg/ekor. Kemitraan proporsional yang dilakukan berdampak terhadap peningkatan aktivitas usaha penggemukan ternak babi dan pendapatan anggota mitra Kelompok Tani Sehati.
Analisis Laju Perkecambahan Kacang Tanah (Arachis hypogaea (L.) Merr.) yang Diberikan Kombinasi Perlakuan Suhu dan Lama Perendaman Asap Cair (Liquid Smoke) Basry Yadi Tang; Stormy Vertygo; Abner Tonu Lema; Wahyu Dani Swari
Jurnal Penelitian Pertanian Terapan Vol 20 No 1 (2020)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v20i1.1482

Abstract

The research aims to get to analyze the effect of temperature and liquid smoke soaking combination on the velocity of peanut germination. Parameters measure were; Mean Germinatin Time (MGT), Mean Germinatin Rate (MGR), Final Germintaion Percentage (GT), Coefficient Velocity Of Germination (CVG), Germination Rate Index (GRI). The treatment combinations used were temperature 250C (1), 300C (2), 350C (3) dan 400C (4) and liquid smoke in which the seeds were soaked for 1 hour (a), 2 hours (b) and 3 hours (c). This resulted in 12 treatment combinations. Results showed that the best treatments were control 1 (K0 250C), control 4 (K0 400C) and 4a (K1 400C), with germination velocity as folows: 1.67 cm.day-1, 1.50 cm.day-1 and 2.00 cm.day-1 respectively . However, it is recommended to use soaking in liquid smoke for an hour (1a) in order to further initiate germination development that could hopefully lead to a much higher peanut crop yield during cultivation.
ANALISIS KANDUNGAN POLIFENOL PADA EKSTRAK TUNAS BAMBU BETUNG (Dendrocalamus asper) Eklopas Padamani; James Ngginak; Abner Tonu Lema
BIOMA Vol 5, No 1 (2020): BIOMA : JURNAL BIOLOGI DAN PEMBELAJARAN BIOLOGI
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/bioma.v5i1.3688

Abstract

Kelompok senyawa polifenol memiliki kemampuan sebagai antioksidan. Dalam tulisan ini peneliti melakukan skrining polifenol pada sampel tunas bambu betung (Dendrocalamus asper) yang diperoleh dari desa Mataru Kabupaten Alor. Pengukuran kadar polifenol secara kualitatif menggunakan larutan FeCl3 1% dan pengujian secara kuantitatif menggunakan metode spektrofotometeri UV-Vis (CE 2021). Hasil pengukuran secara kualitatif menunjukan bahwa pada sampel terkandung senyawa polifenol. Hal ini diperkuat dengan adanya indikator pembentukan warna coklat kehitaman yang pekat. Pengukuran secara kuantitatif menggunakan Spektrofotometri UV-Vis (CE 2021) menunjukan bahwa pada sampel terkandung senyawa polifenol dengan total kadar 8,065 mg/L. Penelitian ini diharapkan dapat memberikan informasi bagi bidang farmakologi tentang tunas bambu betung sebagai salah satu sumber polifenol dan masyarakat tentang pemanfaatan tunas bambu betung sebagai salah satu sumber polifenol dalam pengawetan bahan makanan yang mudah teroksidasi.
Kandungan Mineral Arbila (Phaseulus lunatus L.) Sebagai Pakan Pada Tanah Vertisol dengan Penambahan Bokashi Berbahan Chromolaena odorata dan Feses Sapi Agrifina Risti Tae; Bernadete Barek Konten; Agustinus Semang; Redempta Wea; Abner Tonu Lema
Jurnal Ilmu Peternakan Terapan Vol 2 No 2 (2019): Jurnal Ilmu Peternakan Terapan
Publisher : Politeknik Negeri Jember

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

Abstract

This study aimed to evaluate the mineral content of arbila for the administration of bokashi based on Chromolaena odorata and faeces on the advertisol soil. Field trials had been carried out for 5 months in the villange of Noelbaki, and analysis of this plant in the Food Chemistry Laboratory Hassanuddin University, Makassar. This study was designed based on a complete randomized design (CDR) with 5 treatments, and 4 replications. Plants were planted on the advertiser soil in polybags. The treatments were the level of organic fertilizer (bokashi) i.e. B0=without bokashi B10=10 ton/Ha, B20=20 ton/Ha, B30=30 ton/Ha, B40=40 ton/Ha. Bokashi level was changed to polybag as followed, B0=without treatment, B10=75 g/polybag, B20=150 g/polybag, B30=225 g/polybag, B40=300 g/polybag. The variables observed the mineral content of calcium, phosphorus and magnesium. Bokashi level had a very significant effect on phosphorus and magnesium content, but had not a significant effect on calsium content. The percentage of calsium content was 0.75%, and the average of each treatments were B0 and B10=0.56%, B20=0.58%, B30=0.61%, B40=0.55%. The average of phosphorus content for each treatments were B0=0.15%, B10=0.21%, B20=0.18%, B30=0.16%, and B40=0.23%. The average of magnesium content for each treatments were B0=0.15%, B10=0.18%, B20=0.27%, B30=0.32%, and B40=0.37%. It was concluded that the levels of organic fertilizer (bokashi) had a significant effect on the percentage of phosphorus and magnesium but did not have a significant effect on the calcium content of arbila forage.
Optimization and Kinetic Study of Ende-Natural Zeolite as Candidates of Ammonia Adsorbent on Broiler Chicken Litter Abner Tonu Lema; Cytske Sabuna; Yehezkial Wila Balu
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 2 (2022): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i2.15914

Abstract

Zeolite Natural Ende (ZNE) is a local material from Ende, East Nusa Tenggara which can be used as an adsorbent candidate to reduce environmental pollution due to poultry farm wastes. The purpose of this study is to obtain optimal conditions and adsorption kinetics of ZNE as an adsorbent in terms of absorbing NH3, water content, and neutralizing pH on broiler litter. This study consisted of 3 stages such as sample preparation, optimization of acid concentration, particle size, contact time, adsorbate concentration, as well as determination of ZNE-methylene blue adsorption kinetics. The results of the analysis revealed that the best conditions are using 1 M H2SO4, particle size 80 mesh, contact time for 30 minutes with an adsorption capacity of 1.999 mg/g, and methylene blue 80 ppm as an optimal condition. Furthermore, ZNE-methylene blue adsorption kinetics model is the second order type 1 kinetics by R2 = 1, and also adsorption rate constant is 0.0019 g.mg-1.min
Low-Cost Adsorbent Development: Sulfuric Acid-Activated Teak Sawdust for Effective Methylene Blue Removal Baunsele, Anselmus Boy; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Neolaka, Yantus A. B.; Nitti, Fidelis; Lema, Abner Tonu; Basuki, Rahmat; Rahayu, Rahayu
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.41425

Abstract

The expansion of the global textile industry has resulted in a decline in environmental quality. Environmental pollution resulting from textile dye waste may include heavy metals and dyes, which exhibit carcinogenic and mutagenic effects. Many studies have been done to reduce the harm of dyes. Extensive research has been undertaken to mitigate the detrimental effects of dyes. One cost-effective approach for managing dye pollution is the adsorption of methylene blue using sulfuric acid-activated teak sawdust. Teak wood sawdust, a byproduct of the furniture industry that is abundant and underutilized, contains active sites within its constituent compounds, including cellulose, hemicellulose, and lignin. This study was designed to determine the ability of teak sawdust to adsorb methylene blue. In this investigation, the biosorbent will be characterized using fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) to analyze its active sites and surface morphology. Additionally, the study aimed to elucidate the impact of variation contact time, pH solution, and alteration in methylene blue concentration on the adsorption capacity for methylene blue, employing a UV-Vis spectrophotometer for measurement. The research results demonstrated that optimal adsorption occurred at a contact time of 30 minutes and a pH of 6, with the adsorption efficiency reaching 99.67% as a function of contact time. The kinetic study was modeled using a pseudo-second-order approach, with a kinetic constant of 79.71 g mg⁻¹ min⁻¹. The maximum adsorption capacity was 1.351 mg g⁻¹, the n value was 1, and the percentage of methylene blue adsorbed reached 99.88%.
Low-Cost Adsorbent Development: Sulfuric Acid-Activated Teak Sawdust for Effective Methylene Blue Removal Baunsele, Anselmus Boy; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Neolaka, Yantus A. B.; Nitti, Fidelis; Lema, Abner Tonu; Basuki, Rahmat; Rahayu, Rahayu
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.41425

Abstract

The expansion of the global textile industry has resulted in a decline in environmental quality. Environmental pollution resulting from textile dye waste may include heavy metals and dyes, which exhibit carcinogenic and mutagenic effects. Many studies have been done to reduce the harm of dyes. Extensive research has been undertaken to mitigate the detrimental effects of dyes. One cost-effective approach for managing dye pollution is the adsorption of methylene blue using sulfuric acid-activated teak sawdust. Teak wood sawdust, a byproduct of the furniture industry that is abundant and underutilized, contains active sites within its constituent compounds, including cellulose, hemicellulose, and lignin. This study was designed to determine the ability of teak sawdust to adsorb methylene blue. In this investigation, the biosorbent will be characterized using fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) to analyze its active sites and surface morphology. Additionally, the study aimed to elucidate the impact of variation contact time, pH solution, and alteration in methylene blue concentration on the adsorption capacity for methylene blue, employing a UV-Vis spectrophotometer for measurement. The research results demonstrated that optimal adsorption occurred at a contact time of 30 minutes and a pH of 6, with the adsorption efficiency reaching 99.67% as a function of contact time. The kinetic study was modeled using a pseudo-second-order approach, with a kinetic constant of 79.71 g mg⁻¹ min⁻¹. The maximum adsorption capacity was 1.351 mg g⁻¹, the n value was 1, and the percentage of methylene blue adsorbed reached 99.88%.
Co-Authors Agrifina Risti Tae Agustinus Semang Andrijanto Hauferson Angi Anselmus Boy Baunsele Atikah Atikah Basry Yadi Tang Bernadete Barek Konten Cystke Sabuna Dwi Siswanta Eklopas Padamani Fidelis Nitti Hermin Sulistyarti Hildegardis Missa I Ketut Jaya James Ngginak Johnson N Naat Neolaka, Yantus A B Padamani, Eklopas Petrus Malo Bulu, Petrus Rahayu Rahayu Rahmat Basuki Redempta Wea Stormy Vertygo Theresia Nur Indah Koni Yehezkial Wila Balu