Results 221 to 230 of about 41,302 (263)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +3 more sources
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 ...
openaire +3 more sources
2018
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.
openaire +1 more source
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.
openaire +1 more source
Methanogenesis in thermophilic biogas reactors
Antonie van Leeuwenhoek, 1995Methanogenesis in thermophilic biogas reactors fed with different wastes is examined. The specific methanogenic activity with acetate or hydrogen as substrate reflected the organic loading of the specific reactor examined. Increasing the loading of thermophilic reactors stabilized the process as indicated by a lower concentration of volatile fatty ...
openaire +2 more sources
Methanogenesis 2020: An update
2020<p>For a long time, biological methane formation was considered to occur only under strictly anaerobic conditions by organisms from the domain Archaea. However, during the past 15 years evidence has been accumulating that Eukaryotes such as plants, fungi, animals and humans produce methane independent of methanogenic Archaea via ...
openaire +1 more source
Methyl-Based Methanogenesis: an Ecological and Genomic Review
Microbiology and Molecular Biology Reviews, 2023Clifton P Bueno de Mesquita +2 more
exaly
Methanogenesis in the Digestive Tracts of Insects
2010Termites, cockroaches, and scarab beetles are the only insects known that emit methane, but they do so in impressive amounts. Methanogenesis occurs in the enlarged hindgut compartment and is fueled by hydrogen and reduced one-carbon compounds that are formed during the fermentative breakdown of plant fiber and humus.
openaire +2 more sources