Results 51 to 60 of about 2,678 (169)

Complex Multimeric [FeFe] Hydrogenases: Biochemistry, Physiology and New Opportunities for the Hydrogen Economy

Frontiers in Microbiology, 2018
Hydrogenases are key enzymes of the energy metabolism of many microorganisms. Especially in anoxic habitats where molecular hydrogen (H2) is an important intermediate, these enzymes are used to expel excess reducing power by reducing protons or they are ...
Kai Schuchmann, Nilanjan Pal Chowdhury, Volker Müller   +2 more
doaj   +1 more source

Genomic Survey of Carbon Monoxide Dehydrogenases Reveals Their Widespread Distribution in Marine Habitats

Environmental Microbiology Reports, Volume 18, Issue 3, June 2026.
Protein sequence surveys show that nickel‐ and molybdenum/copper‐containing carbon monoxide dehydrogenases (CODHs) are widespread in the ocean. Phylogenetic and genome context analyses reveal that marine CODHs are highly diverse in both evolutionary history and functional organisation.
Nipa Chongdar, Anand Goyal, Samir R. Damare   +2 more
wiley   +1 more source

Energy-Conserving Enzyme Systems Active During Syntrophic Acetate Oxidation in the Thermophilic Bacterium Thermacetogenium phaeum

Frontiers in Microbiology, 2019
The thermophilic acetogen Thermacetogenium phaeum uses the Wood-Ljungdahl pathway (WLP) in both directions, either for the production of acetate from various compounds or for the oxidation of acetate in syntrophic cooperation with methanogens.
Anja Keller, Anja Keller, Bernhard Schink, Bernhard Schink, Nicolai Müller   +4 more
doaj   +1 more source

Optimizing Microbial Fuel Cell Efficiency Through a Designed Electrogenic Consortium to Remove Alkylbenzenes

ChemElectroChem, Volume 13, Issue 10, 19 May 2026.
A mangrove‐derived electrogenic microbial consortium was successfully acclimated to codegrade ethylbenzene and xylenes in a microbial fuel cell (MFC). Acclimation provided high degradation efficiencies (up to 97%) and improved energy recovery. The MFC reached voltage of 520 mV and power density of 63.4 mW m−2.
João Carlos de Souza, Ana Clara Bonizol Zani, Valeria Reginatto, Adalgisa Rodrigues de Andrade   +3 more
wiley   +1 more source

Reducing Enteric Methanogenesis through Alternate Hydrogen Sinks in the Rumen

Methane, 2022
Climate change and the urgent need to reduce greenhouse gas (GHG) emission from agriculture has resulted in significant pressure on the livestock industry for advanced practices that are environmentally more sustainable. Livestock is responsible for more
Prasanta Kumar Choudhury, Rajashree Jena, Sudhir Kumar Tomar, Anil Kumar Puniya   +3 more
doaj   +1 more source

Nanobiocatalysts: Potential Applications in Biofuel Production and Biotransformation

Carbon Neutralization, Volume 5, Issue 3, May 2026.
The application of nanobiocatalysts in the field of biofuel production and the biotransformation of substrate were reviewed. Further, the possible research gaps in the field of biofuel and value‐added compound production and a possible way to enhance the application of nanobiocatalyst in future development are highlighted.
Preethi Muthu, Kalaiselvi Thiyagarajan, V. Pugalenthi, M. Gunasekaran, J. Rajesh Banu   +4 more
wiley   +1 more source

Methane emissions from fresh dairy cattle and pig slurry

Journal of Environmental Quality, Volume 55, Issue 3, May/June 2026.
Abstract During manure storage, methane (CH4) is produced by anaerobic decomposition of organic matter by methanogens. Frequent removal and further processing of manure from the barn can reduce CH4 emissions. However, little is known about how much CH4 is lost during the adaptation of methanogens to the changing environment from the gut to storage. The
E. G. G. van Boxmeer, H. J. Smit, N. Verdoes   +2 more
wiley   +1 more source

Uncoupling by Acetic Acid Limits Growth of and Acetogenesis by Clostridium thermoaceticum [PDF]

Applied and Environmental Microbiology, 1984
When cells of the anaerobic thermophile Clostridium thermoaceticum grow in batch culture and homoferment glucose to acetic acid, the pH of the medium decreases until growth and then acid production cease, at about pH 5. We postulated that the end product of fermentation limits growth by acting as an uncoupling agent.
J J, Baronofsky, W J, Schreurs, E R, Kashket   +2 more
openaire   +2 more sources

Acetogenic Methane‐Carbon Monoxide Comproportionation: An Exergonic but Unobserved Microbial Metabolism

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Microbial metabolism relies on redox reactions that exploit chemical disequilibria. While aerobic carbon oxidation, carbon fixation, and fermentation are well studied, the broader space of anaerobic carbon redox reactions remains underexplored.
Heidi S. Aronson, William D. Leavitt, Douglas E. LaRowe   +2 more
wiley   +1 more source

Acetate Shock Loads Enhance CO Uptake Rates of Anaerobic Microbiomes

Microbial Biotechnology
Pyrolysis of lignocellulosic biomass commonly produces syngas, a mixture of gases such as CO, CO2 and H2, as well as an aqueous solution generally rich in organic acids such as acetate.
Alberto Robazza, Ada Raya i Garcia, Flávio C. F. Baleeiro, Sabine Kleinsteuber, Anke Neumann   +4 more
doaj   +1 more source