Results 171 to 180 of about 3,891 (199)

Energetics of Acetogenesis from C1 Units

1994
Homoacetogenic bacteria (also called “acetogenic bacteria”) are strictly anaerobic eubacteria, which catalyze the synthesis of acetate from C1 units in their catabolism. The homoacetogens have proved to be a very heterogenous group of microorganisms: they are gram positive as well as gram negative, spore- or non-spore forming, thermophilic and ...
Gabriele Diekert, Gert Wohlfarth
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Physioecologic and Metabolic Properties of a Ayntrophic Acetogenesis Coculture

Advanced Materials Research, 2013
In anaerobic digestion system, the functional niche of hydrogen-producing acetogens (HPAs) is between acidogenic fermentation bacteria and methanogens. HPAs are quite difficult to be isolated by pure and ampliative cultures due to the obligate anaerobic metabolism property in syntrophic association with methanogenic.
Tao Jiang, Jun Guo He, Xiang Guo Zeng, Jian Zheng Li   +3 more
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Acetogenesis from CO2 in the Human Colonic Ecosystem

1994
Figure 13.1 shows the general features of the colonic fermentation. The human diet contains high concentrations of plant polysaccharides (cellulose, hemicellulose, pectin, and starch). Except for starch, they are not digested by host enzymes and pass to the colon where they are fermented by the cooperative metabolism of a large number of different ...
Meyer J. Wolin, Terry L. Miller
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Competition between reductive acetogenesis and methanogenesis in the pig large‐intestinal flora

Journal of Applied Bacteriology, 1994
Washed bacterial suspensions obtained from the pig hindgut were incubated under 13 CO 2 in a buffer containing NaH 13 CO 3 and carbohydrates. Incorporation of
de Graeve, K.G., Grivet, J.P., Durand, M., Beaumatin, P., Cordelet, Catherine, Hannequart, G., Demeyer, D.   +6 more
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Syntrophic Acetate Oxidation and “Reversible Acetogenesis”

1994
Acetate is an important CH4 precursor in nature, accounting for two-thirds of the CH4 produced in many natural habitats and in anaerobic bioreactors. Although microbial methanogenesis from acetate was first described in the early 1900s, the mechanism of methanogenesis from acetate was controversial until 1978, when it was demonstrated that a pure ...
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Community‐Level Analysis: Key Genes of CO2‐Reductive Acetogenesis

2005
CO2-reductive acetogenic bacteria are ubiquitous in anaerobic habitats and are physiologically and phylogenetically diverse. The latter characteristics have rendered their diversity in natural environments, their distributions, and their ecological function(s) difficult to assess. Recently introduced polymerase chain reaction (PCR) primers for specific
Charles R, Lovell, Adam B, Leaphart
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Modeling the processes of dynamics at biogas plants on the acetogenesis stage

2016 17th International Conference Computational Problems of Electrical Engineering (CPEE), 2016
The task of modeling the processes of anaerobic microbiological fermentation with keeping the balance at the acetogenesis stage was considered in this work. It was proposed and justified to build models at these stages in the form of interval discrete dynamic model.
Mykola Dyvak, Iryna Hural, Piotr Lipinski   +2 more
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Influence of nitrate on oxalate- and glyoxylate-dependent growth and acetogenesis by Moorella thermoacetica

Archives of Microbiology, 2002
Oxalate and glyoxylate supported growth and acetate synthesis by Moorella thermoacetica in the presence of nitrate under basal (without yeast extract) culture conditions. In oxalate cultures, acetate formation occurred concomitant with growth and nitrate was reduced in the stationary phase. Growth in the presence of [(14)C]bicarbonate or [(14)C]oxalate
Corinna, Seifritz, Jürgen M, Fröstl, Harold L, Drake, Steven L, Daniel   +3 more
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Reductive acetogenesis in animal and human gut

1994
chap.
Durand, M., Bernalier, Annick
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Acetate via Glycine: A Different Form of Acetogenesis

1994
In contrast to acetogenesis via the acetyl-CoA pathway, acetogenesis via glycine has never been reviewed in detail. The carbon flow of the glycine-dependent process was earlier depicted mostly as the “serine bypass” modification rather than the “direct reduction” process (Fuchs, 1986; Ljungdahl, 1984, 1986; Ljungdahl and Wood, 1982, Waber and Wood ...
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