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55 articles for “Methane”
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Research ArticleOpen accessIn the keywordsThe Effect of Higher Sludge Recycling Rate on Anaerobic Treatment of Palm Oil Mill Effluent in a Semi-Commercial Closed Digester for Renewable EnergyAlawi Sulaiman, Zainuri Busu, Meisam Tabatabaei et al.Problem statement: A 500 m3 semi-commercial closed anaerobic digester was constructed for Palm Oil Mill Effluent (POME) treatment and methane gas capture for renewable energy. During the start-up operation period, the Volatile Fatty Acids (VFA) accumulation could not be controlled and caused instability on the system. Approach: A settling tank was installed and sludge was recycled as to provide a … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 1 · 31 Mar 2009 · 9,210 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEthanol Production by Novel Proline Accumulating Pichia kudriavzevii Mutants Strains Tolerant to High Temperature and Ethanol StressesRika Indri Astuti, Sena Alifianti, Ratu Nabila Maisyitoh et al.Accumulation of osmoprotectant molecule, proline, has been reported to induce a stress tolerance phenotype in yeast cells. In this study, two ethanologenic isolates of yeast, Pichia kudriavzevii (R and T), both capable of using both five and six sugar compounds to produce ethanol, were mutated via ethyl methanesulfonate (EMS) treatment. Prolineaccumulating mutant strains were selected by using proline-analogue (L-azetidine-2-carboxylic acid). … …OnLine Journal of Biological Sciences, Vol. 18, Issue 3 · 11 Sep 2018 · 7,838 accessesView PDFCite
Research ArticleOpen accessIn the keywordsChemical Mutagenesis for Improvement of Production of a Biologically Active Extracellular Polymeric Substance by Halomonas xianhensis SUR308Jhuma Biswas, Amal K. PaulA moderately halophilic bacterium, Halomonas xianhensis SUR308 (Genbank Accession No. KJ933394) isolated from solar saltern of Surala, Odisha, India was found to produce significant amount of a biologically active extracellular polymeric substances (EPS). Under optimized cultural conditions, the strain was able to produce 7.05 g L-1 of EPS after 8 days of incubation under shake culture. To enhance the EPS … …Current Research in Microbiology, Vol. 7, Issue 1 · 1 Apr 2016 · 15,918 accessesView PDFCite
Research ArticleOpen accessIn the abstractSemen Quality and Artificial Insemination Efficacy Using Sericin-Silica-Phosphate-CuO Hydrogel in Thin-tailed SheepEnike Dwi Kusumawati, I Wayan Karyasa, Duran Corebima Aloysius et al.Artificial Insemination (AI) in livestock is increasingly demanded because it greatly affects the productivity and quality of livestock. AI should be supported by advanced material chemistry, especially organic-inorganic hybrid biomaterials. We aimed to produce a prototype of renewable advanced biomaterial technology in the form of Sericin-Silica-Phosphate (SER-SI-PO) hydrogel reinforced with Copper Nanoparticles (CuNPs) and its application in AI. The testing … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 10 Jun 2025 · 3,851 accessesView PDFCite
Research ArticleOpen accessIn the abstractNanowire Mediated Effect of Interspecies Electron Transfer in Organic Solid Waste Co-FermentationJingkang Chen, Daicheng Liu et al.Low efficiency of Interspecific Electron Transfer (IET) among microorganisms constrains organic matter degradation and biogas production in organic solid waste co‑fermentation. This work investigates the underlying bottleneck and evaluates the nanowire‑mediated enhancement of IET. Surface plasmon resonance‑enhanced electrochemical impedance spectroscopy coupled with metagenomic and metatranscriptomic sequencing was applied to regulate endogenous nanowire formation in anaerobic reactors. Surface Plasmon Resonance-Enhanced Electrochemical … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 9 Oct 2026 · 591 accessesView PDFCite
Literature ReviewOpen accessIn the abstractRumen Microbiota Mysteries: Nutrition, Function, and its Impact on Livestock ProductivityHamdi Mayulu, Marry ChristiyantoRuminants are important herbivores in the global food system, serving as primary producers of meat and milk. The productivity of these animals is influenced by the functionality of their digestive organs, namely rumen. The digestion, metabolism and nutrients absorption in the rumen epithelium enhance the host defende mechanisms mechanisms, promoting health and productivity in ruminants. Therefore, this review aimed to … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 4 Aug 2025 · 4,069 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving Rumen Fermentation by Inoculation of Cellulolytic Bacteria Isolated from Anoa, Bison, Muntjak and Timor Deer FaecalSri Suharti, Erika Julian Cahyani, Iksan Qodri Pramarta et al.Tropical endemic herbivores such as anoa (Bubalus depressicornis), bison (Bos javanicus), muntjak (Muntiacus muntjak), and Timor deer (Rusa timorensis), can digest various types of fibrous feed because their digestive tract has high cellulolytic bacteria and those can be found in their feces. Previously, we isolated and identified cellulolytic bacteria from the feces of anoa, bison, muntjak, and Timor deer. This … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 4 · 30 Oct 2023 · 5,651 accessesView PDFCite
Research ArticleOpen accessIn the abstractBlood Profiles, Microbial Population, Rumen Fermentation and Performance of Bali Calves Fed with Soybean Oil Calcium SoapSri Suharti, Sidik Yono, Dewi Kurniasari et al.The purpose of this study was to assess the effects of Soybean Oil Calcium soap (SO-Ca) on blood profiles, rumen fermentation properties, microbial populations, and the performance of Bali’s calves. Using a randomized block design, three treatment groups of six replications each contained 18 calves. Treatments included 0% SO-Ca (control/T0), 5% SO-Ca (T1), and 10% SO-Ca (T2). The diet of … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 2 · 31 May 2023 · 5,265 accessesView PDFCite
Research ArticleOpen accessIn the abstractIn vitro Rumen Fermentability of the Pelleted Feed Containing Water Spinach (Ipomoea aquatica)Himmatul Hasanah, Eko Pangestu, Ali Agus, Joelal AchmadiAn in vitro technique based on two stages of batch culture was used to clarify fermentability and digestibility of pellet feed containing water spinach (Ipomoea aquatica). The portion of Pennisetum purpureum in the pellet feed was substituted with Ipomoea aquatica at respective levels of 0% (T1), 20% (T2), 40% (T3) and 60% (T4). The treatments were allocated in a completely … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 1 · 27 Mar 2020 · 7,559 accessesView PDFCite
Review ArticleOpen accessIn the abstractNasa Selects Concepts for a New Mission to Titan, the Moon of SaturnRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuNasa just has selected two new concepts for some new robotic missions, one of which aims to explore potential landing sites on Saturn’s largest moon, Titan. This first concept is named Dragonfly, which is a drone-like rotorcraft that would use the environment on Titan to fly to a number of locations to sample materials and determine surface composition to examine … …Journal of Aircraft and Spacecraft Technology, Vol. 2, Issue 1 · 19 Jan 2018 · 12,003 accessesView PDFCite