Results 11 to 20 of about 48,360 (283)

Genomic and transcriptomic insights into methanogenesis potential of novel methanogens from mangrove sediments

Microbiome, 2020
Background Methanogens are crucial to global methane budget and carbon cycling. Methanogens from the phylum Euryarchaeota are currently classified into one class and seven orders, including two novel methanogen taxa, Methanofastidiosa and ...
Cui-Jing Zhang, Jie Pan, Yang Liu, Chang-Hai Duan, Meng Li   +4 more
doaj   +2 more sources

Diversity of Methanogens in Animals’ Gut

Microorganisms, 2020
Methanogens are members of anaerobe microbiota of the digestive tract of mammals, including humans. However, the sources, modes of acquisition, and dynamics of digestive tract methanogens remain poorly investigated.
Cheick Oumar Guindo, Bernard Davoust, Michel Drancourt, Ghiles Grine   +3 more
doaj   +2 more sources

Review: Methanogens and methane production in the digestive systems of nonruminant farm animals

Animal, 2021
The greenhouse gases (GHGs) derived from agriculture include carbon dioxide, nitrous oxide, and methane (CH4). Of these GHGs, CH4, in particular, constitutes a major component of the GHG emitted by the agricultural sector.
A. Misiukiewicz, M. Gao, W. Filipiak, A. Cieslak, A.K. Patra, M. Szumacher-Strabel   +5 more
doaj   +2 more sources

Comparative Microbiome Analysis Reveals the Ecological Relationships Between Rumen Methanogens, Acetogens, and Their Hosts

Frontiers in Microbiology, 2020
Ruminant methane, which is generated by methanogens through the consumption of hydrogen and supports the normal function of the rumen ecosystem, is a major source of greenhouse gases.
Zhipeng Li, Zhipeng Li, Xiaoxu Wang, Antton Alberdi, Jiabo Deng, Zhenyu Zhong, Huazhe Si, Chengli Zheng, Hanlin Zhou, Jianming Wang, Yifeng Yang, André-Denis G. Wright, Shengyong Mao, Zhigang Zhang, Zhigang Zhang, Leluo Guan, Guangyu Li   +16 more
doaj   +2 more sources

Prebiotic aqueous reactions catalyzed by native nickel without hydrogen. [PDF]

FEBS J
Serpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Garcia Garcia C, Brabender M, Martin WF.
europepmc   +2 more sources

Magnetite Alters the Metabolic Interaction between Methanogens and Sulfate-Reducing Bacteria

Environmental Science and Technology, 2023
It is known that the presence of sulfate decreases the methane yield in the anaerobic digestion systems. Sulfate-reducing bacteria can convert sulfate to hydrogen sulfide competing with methanogens for substrates such as H2 and acetate.
Ginevra Giangeri, Panagiotis Tsapekos, M. Gaspari, P. Ghofrani-Isfahani, Marie Karen Tracy Hong Lin, L. Treu, P. Kougias, S. Campanaro, I. Angelidaki   +8 more
semanticscholar   +1 more source

Homo-Acetogens: Their Metabolism and Competitive Relationship with Hydrogenotrophic Methanogens

Microorganisms, 2022
Homo-acetogens are microbes that have the ability to grow on gaseous substrates such as H2/CO2/CO and produce acetic acid as the main product of their metabolism through a metabolic process called reductive acetogenesis.
Supriya C. Karekar, Renan Stefanini, B. Ahring   +2 more
semanticscholar   +1 more source

Enrichment of the hydrogenotrophic methanogens for, in-situ biogas up-gradation by recirculation of gases and supply of hydrogen in methanogenic reactor.

Bioresource Technology, 2021
During in situ biogas up-gradation by supplying hydrogen from an external source and enrichment of hydrogenotrophic methanogens, high pressure of H2 negatively affects hydrolytic and fermentative activities.
Alam Khan, Sedrah Akbar, Valentine Okonkwo, Cindy J. Smith, Samiullah Khan, Aamer Ali Shah, Fazal Adnan, U. Zeeshan Ijaz, Safia Ahmed, M. Badshah   +9 more
semanticscholar   +1 more source

Novel Methanobacterium Strain Induces Severe Corrosion by Retrieving Electrons from Fe⁰ under a Freshwater Environment

Microorganisms, 2022
Methanogens capable of accepting electrons from Fe0 cause severe corrosion in anoxic conditions. In previous studies, all iron-corrosive methanogenic isolates were obtained from marine environments.
Shin-ichi Hirano, Sota Ihara, Satoshi Wakai, Yuma Dotsuta, Kyohei Otani, Toru Kitagaki, Fumiyoshi Ueno, Akihiro Okamoto   +7 more
doaj   +1 more source

3D‐Printed Methane‐Producing Electrodes for Microbial Fuel Cells Developed Using Biogel Ink Containing Live Methanogens and White Charcoal

Macromolecular Materials and Engineering, 2023
Methanogens are used as catalysts for cathodes in microbial fuel cells, to reduce CO2 to CH4. However, the attachment of microbes to the electrodes via culturing is time‐consuming, and inadequate biofilm formation can lead to lesser surface area coverage,
Masaki Umetsu, Yosuke Watanabe, Masato Ueno, Tatsuya Kobayashi, Hidemitsu Furukawa, Chika Tada   +5 more
doaj   +1 more source