For cost-effective and efficient ethanol production from lignocellulosic fractions of plant biomass, the conversion of not only major constituents, such as glucose and xylose, but also less predominant sugars, such as l-arabinose, is required. Wild-type strains of Saccharomyces cerevisiae, the organism used in industrial ethanol production, cannot ferment xylose and arabinose. Although metaboli...

The purpose of this study was to determine the minimum number of tests that could be used to differentiate between the coagulase-positive strains of staphylococcus: Staphylococcus aureus, Staphylococcus hyicus, and Staphylococcus intermedius. Eighty coagulase-positive strains of each of the three species were examined. The five tests conducted were growth on modified Baird-Parker agar, growth o...

The moderately halophilic bacterium Nesterenkonia sp. strain F, which was isolated from Aran-Bidgol Lake (Iran), has the ability to produce acetone, butanol, and ethanol (ABE) as well as acetic and butyric acids under aerobic and anaerobic conditions. This result is the first report of ABE production with a wild microorganism from a family other than Clostridia and also the first halophilic spe...

The production of biohydrogen through anaerobic fermentation has received increasingly attention and has great potential as an alternative process for clean fuel production in the future. The monitoring of the stages of anaerobic fermentation provides relevant information about the bioprocess. The objective of this study is to propose a novel methodology for simultaneous analysis of sucrose, gl...

BACKGROUND In Saccharomyces cerevisiae galactose is initially metabolized through the Leloir pathway after which glucose 6-phosphate enters glycolysis. Galactose is controlled both by glucose repression and by galactose induction. The gene PGM2 encodes the last enzyme of the Leloir pathway, phosphoglucomutase 2 (Pgm2p), which catalyses the reversible conversion of glucose 1-phosphate to glucose...

Hyaluronic acid (HA) is a linear high molecular weight glycosaminoglycan polymer made up of repeating units of β (14) N-Acetylglucosamine and β (13) D glucuronic acid. Producing large quantities of high molecular weight polymer with very low dispersity of molecular size is seen as a niche in a huge hyaluronic acid world market and microbial derived product could effectively fit into it. This ...

Research was conducted to study the effects of biphasic anaerobic fermentation upon an organic fraction of municipal solid waste, and to observe the fate of heavy metals and pathogenic organisms in the acidogenic and methanogenic environments of the biphasic process. The high-solids (16 wt % solids) substrate was packed in a bench-scale, anaerobic, solid-state fermenter with amounts of lead nit...

The Effects of using Acid-Consuming Bacteria and Different Buffers with High Concentration Diets on In Vitro Digestion Fermentation Activity Anaerobic Fungi Fattening Lambs Rumen

The effects of probiotics, yucca extract, monensin and L-cysteine on rumen methanogenesis were determined by in vitro incubation using mixed bovine rumen microorganisms with ground Bermuda grass hay as a substrate. Two forms of probiotics, yucca extract, monensin and L-cysteine were tested during 24 hour anaerobic incubations. Methane and carbon dioxide production and fermentation characteristi...

A b s t r a c ~ 1 Key enzymes of oxldahve metabohsm were assayed m cell-free extracts of the anaerobic protozoan, Trlchomonas 9allmae 2 The sole enzyme of the trlcarboxyhc acid (TCA) cycle detected was mahc dehydrogenase 3 T 9alhnae appears to be a TCA cycleless orgamsm that obtams most of its energy from anaerobic fermentation m much the same manner as Tr~trwhomonas Joetus and Trzchomonas vagmahs