Results 141 to 150 of about 12,429 (188)
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Hexadecane decay by methanogenesis
Nature, 2000The potential for the biological conversion of long-chain saturated hydrocarbons to methane under anaerobic conditions has been demonstrated by using an enrichment culture of bacteria to degrade pure-phase hexadecane1. The formation of methane in hydrocarbon-rich subsurface zones could be explained if a similar conversion of long-chain alkanes to ...
Lovley, Derek, Anderson, Robert T
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Control of rumen methanogenesis
Environmental Monitoring and Assessment, 1996During the last decades, considerable research on methane production in the rumen and its inhibition has been carried out. Initially, as methane production represents a significant loss of gross energy in the feed (2-15%), the ultimate goal of such intervention in rumen fermentation was an increase in feed efficiency. A second reason favouring research
C J, Van Nevel, D I, Demeyer
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UNUSUAL COENZYMES OF METHANOGENESIS
Annual Review of Biochemistry, 1990Abstract An isolated area of biochemistry has yielded some surprises — six new cofactors including the first nickel-tetrapyrrole and a new method of CO 2 fixation.
A A, DiMarco, T A, Bobik, R S, Wolfe
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Methanogenesis in monogastric animals
Environmental Monitoring and Assessment, 1996Studies of methanogenic bacteria present in monogastric animals are still scarce. Methanogens have been isolated from faeces of rat, horse, pig, monkey, baboon, rhinoceros, hippopotamus, giant panda, goose, turkey and chicken. The predominant methanogen in all except the chicken and turkey is species of Methanobrevibacterium.
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Methanogenesis: Syntrophic Metabolism
2010"Water is life!" All active cellular systems require water as the medium and solvent of their metabolic activities. Hydrophobic compounds and structures, which tend to exclude water, though providing inter alia excellent sources of energy and a means of biological compartmentalization, present problems of cellular handling, poor bioavailability and, in
Sieber, J.R. +4 more
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Methanogenesis in Marine Sediments
Annals of the New York Academy of Sciences, 2008The anaerobic conversion of complex organic matter to CH4 is an essential link in the global carbon cycle. In freshwater anaerobic environments, the organic matter is decomposed to CH4 and CO2 by a microbial food chain that terminates with methanogens that produce methane primarily by reduction of the methyl group of acetate and also reduction of CO2 ...
James G, Ferry, Daniel J, Lessner
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Bioenergetics of Methanogenesis
1993The bioenergetics of methanogens could be expected to have special features, given that they are members of the Archaea and utilize a number of unique reactions and coenzymes in the pathways of methanogenesis. This turns out to be so; however, it was not until 1980 that the elucidation of the biochemistry of methanogenesis attained a stage where the ...
Volker Müller +2 more
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Acetogenesis as an alternative to methanogenesis in the rumen.
2015Abstract Bacteria capable of producing acetate from H2 and CO2 using the acetyl-CoA pathway (4H2+2CO2 → CH3COOH+2H2O) are known as acetogens. They have been found in a variety of anaerobic ecosystems, including sediments, wastewater treatment systems, soils and animal gut systems.
Gagen, Emma J. +2 more
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2018
Abstract Agriculture is a significant source of methane, contributing about 12% of the global anthropogenic methane emissions. Major sources of methane from agricultural activities are fermentation in the reticulo-rumen of ruminant animals (i.e., enteric methane), fermentation in animal manure, and rice cultivation. Enteric methane is
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Abstract Agriculture is a significant source of methane, contributing about 12% of the global anthropogenic methane emissions. Major sources of methane from agricultural activities are fermentation in the reticulo-rumen of ruminant animals (i.e., enteric methane), fermentation in animal manure, and rice cultivation. Enteric methane is
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A New Era of Methanogenesis Research
Trends in Microbiology, 2016The reductive acetyl-CoA pathway coupled to methanogenesis is likely one of Earth's oldest metabolisms. Yet, until recently this metabolism had only been found in the kingdom Euryarchaeota. A study now suggests that distantly related Bathyarchaeota are also methanogens and that methane metabolism is more phylogenetically widespread than previously ...
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