This study evaluated the effect of increasing the proportion of bison relative to cattle inoculum on fermentation and microbial populations within an artificial rumen (Rusitec). The experiment was a completely randomized design with a factorial treatment structure (proportion cattle:bison inoculum; 0:100, 33:67, 67:33, and 100:0) replicated in two Rusitec apparatuses (n = 8 fermenters). The exp...

The hydroxylation of dehydroepiandrosterone (DHEA) to 7? -hydroxy-5-androstene-17-one (7?-OH-DHEA) and 7?-hydroxy-5-androstene-17-one (7?-OH-DHEA) by Gibberella sp. CICC 2498 Absidia coerulea 41050 was investigated. media ingredients were optimized. Single factors such as the DHEA concentration, culture time, medium volume, inoculum rate individually investigated generate optimum biotransformat...

Abstract Tannin acyl hydrolase as the common name of tannase is an inducible extracellular enzyme that causes hydrolysis galloyl ester and depside bonds in tannins, yielding gallic acid glucose. The main objective this study to find a novel produced by Acinetobacter Baumannii . A number optimization steps were followed order improve highest production tannase. In present study, A. baumannii iso...

The purpose of current investigation was to explore the scope integrating an anaerobic digester in a decentralized municipal wastewater treatment plant for in-situ household waste. present work intends identify potential sewage sludge and food waste biogas generation. study conducted lab scale continuous stirred tank reactor having working volume 6.5 L at mesophilic temperature. paper mill used...

The aim of the work was to study effect electrolysis on process anaerobic digestion in example poultry manure with an inoculum activated sludge from a municipal wastewater treatment plant. set achieved by solving following tasks: microcopiing during under influence treatment; studying dynamics biogas yield and its component composition change pH values redox potential (ORP) experiments combinat...

Obtaining a reliable estimation of the methane potential of organic waste streams in anaerobic digestion, for which a biochemical methane potential (BMP) test is often used, is of high importance. Standardization of this BMP test is required to ensure inter-laboratory repeatability and accuracy of the BMP results. Therefore, guidelines were set out; yet, these do not provide sufficient informat...

To accomplish the rapid start-up and stable operation of biogas digesters, an efficient inoculum is required. To obtain such an inoculum for food waste anaerobic digestion, we domesticated dairy manure anaerobic digestion residue by adding food waste every day. After 36 days, the pH and biogas yield stabilized signifying the completion of domestication. During domestication, the microbial commu...

Air-exposed microbial fuel cells and screening techniques" (2010). Introduction: Internal resistance (R int) of microbial fuel cells (MFC) has been identified as a significant variable associated to cell power output and low values are desirable (Du et al., 2007). Therefore , the aim of this research was to evaluate the effect of inoculum type and architectural features of MFC (separation of el...