Results 11 to 20 of about 2,678 (169)

Genomic and enzymatic evidence of acetogenesis by anaerobic methanotrophic archaea [PDF]

Nature Communications, 2020
Ocean cold seeps are poorly understood relative to related systems like hydrothermal vents. Here the authors use high pressure bioreactors and microbial communities from a cold seep mud volcano and find a previously missing step of methane conversion to ...
Shanshan Yang, Yongxin Lv, Xipeng Liu, Yinzhao Wang, Qilian Fan, Zhifeng Yang, Nico Boon, Fengping Wang, Xiang Xiao, Yu Zhang   +9 more
doaj   +5 more sources

Mitigating methane emissions and promoting acetogenesis in ruminant livestock

Frontiers in Animal Science
Through enteric fermentation, ruminants convert fibrous biomass into high-quality proteins like meat and milk. In this process however, methanogenic archaea in the ruminant gastrointestinal tract produce methane, a potent greenhouse gas, from the by ...
Rehema Iddi Mrutu, Abdussamad Muhammad Abdussamad, Kabir Mustapha Umar, Adnan Abdulhamid, Natalie G. Farny, Natalie G. Farny   +5 more
doaj   +2 more sources

Genomic and Transcriptomic Insights Into the Autotrophic Metabolism on H₂ + CO₂ or CO of the Thermophilic Acetogenic Model Organism Moorella thermoacetica. [PDF]

Environ Microbiol
Moorella thermoacetica is the model organism for elucidation of acetogenesis. The reduction of CO2 to acetate is well studied, but how redox carrier balancing and energy conservation are maintained during autotrophic growth and how H2 is oxidised remains enigmatic.
Rosenbaum FP, Poehlein A, Daniel R, Müller V.   +3 more
europepmc   +2 more sources

Investigation of phase equations for anaerobic digestion process of anaerobic bioreactor landfill [PDF]

E3S Web of Conferences, 2020
The anaerobic digestion process consists of four phases hydrolysis, acidogenesis, acetogenesis and methanogenesis. In the present work anaerobic digestion process of waste from anaerobic bioreactor landfill is considered and leachate is analyzed ...
Shinde Priyanka R., Mali Sandip. T.
doaj   +1 more source

Methanogenesis inhibition remodels microbial fermentation and stimulates acetogenesis in ruminants. [PDF]

Proc Natl Acad Sci U S A
Rumen microbiota enable ruminants to grow on fibrous plant materials, but also produce methane, driving 5% of global greenhouse gas emissions and leading to a loss of gross energy content. Methanogenesis inhibitors such as 3-nitrooxypropanol (3-NOP) decrease methane emissions in ruminants when supplemented in feed.
Ni G, Wang M, Walker N, Muetzel S, Schmidt O, Fischer A, Stemmler RT, Leung PM, Zhang X, Li Q, Jain S, Jespersen M, Grinter R, Archer SDJ, Pacheco D, Lowe K, Pope PB, Müller V, Pitta DW, Janssen PH, Watson M, Attwood GT, Ver Loren van Themaat E, Kindermann M, Greening C.   +24 more
europepmc   +3 more sources

Syngas as Electron Donor for Sulfate and Thiosulfate Reducing Haloalkaliphilic Microorganisms in a Gas-Lift Bioreactor

Microorganisms, 2020
Biodesulfurization processes remove toxic and corrosive hydrogen sulfide from gas streams (e.g., natural gas, biogas, or syngas). To improve the efficiency of these processes under haloalkaline conditions, a sulfate and thiosulfate reduction step can be ...
Caroline M. Plugge, João A. B. Sousa, Stephan Christel, Mark Dopson, Martijn F. M. Bijmans, Alfons J. M. Stams, Martijn Diender   +6 more
doaj   +1 more source

Obligate autotrophy at the thermodynamic limit of life in a new acetogenic bacterium

Frontiers in Microbiology, 2023
One of the important current issues of bioenergetics is the establishment of the thermodynamic limits of life. There is still no final understanding of what is the minimum value of the energy yield of a reaction that is sufficient to be used by an ...
Evgenii N. Frolov, Alexander G. Elcheninov, Alexandra V. Gololobova, Stepan V. Toshchakov, Andrei A. Novikov, Alexander V. Lebedinsky, Ilya V. Kublanov   +6 more
doaj   +1 more source

A Third Way of Energy Conservation in Acetogenic Bacteria

Microbiology Spectrum, 2022
Acetogenic bacteria are a group of strictly anaerobic bacteria that make a living from acetate formation from two molecules of CO2 via the Wood-Ljungdahl pathway (WLP).
Florian Kremp, Jennifer Roth, Volker Müller   +2 more
doaj   +1 more source

Anaerobic digestion of donkey dung for biogas production

South African Journal of Science, 2016
Biogas can provide a solution to some of South Africa’s energy needs, especially in rural areas of Eastern Cape Province that have plentiful biogas substrates from donkeys, goats, sheep, cattle and chicken.
Patrick Mukumba, Golden Makaka, Sampson Mamphweli   +2 more
doaj   +1 more source

Extracellular Electron Uptake by Acetogenic Bacteria: Does H2 Consumption Favor the H2 Evolution Reaction on a Cathode or Metallic Iron?

Frontiers in Microbiology, 2020
Some acetogenic bacteria are capable of using solid electron donors, such as a cathode or metallic iron [Fe(0)]. Acetogens using a cathode as electron donor are of interest for novel applications such as microbial electrosynthesis, while microorganisms ...
Jo Philips
doaj   +1 more source