Results 1 to 10 of about 2,609 (113)

Genome-Scale Analysis of Acetobacterium woodii Identifies Translational Regulation of Acetogenesis

open access: yesMSystems, 2021
Acetogens synthesize acetyl-CoA via the CO2-fixing Wood-Ljungdahl pathway. Despite their ecological and biotechnological importance, their translational regulation of carbon and energy metabolisms remains unclear.
Dong Rip Kim   +2 more
exaly   +5 more sources

Acetogenesis in the Energy-Starved Deep Biosphere – A Paradox?

open access: yesFrontiers in Microbiology, 2012
Under anoxic conditions in sediments, acetogens are often thought to be outcompeted by microorganisms performing energetically more favorable metabolic pathways, such as sulfate reduction or methanogenesis. Recent evidence from deep subseafloor sediments
Lever Ma, Lever Mark Alexander
exaly   +3 more sources

Competition Between Chemolithotrophic Acetogenesis and Hydrogenotrophic Methanogenesis for Exogenous H2/CO2 in Anaerobically Digested Sludge: Impact of Temperature

open access: yesFrontiers in Microbiology, 2019
Anaerobic digestion is a widely applied technology for sewage sludge treatment. Hydrogen and CO2 are important degradation products, which serve as substrates for both hydrogenotrophic methanogenesis and chemolithotrophic acetogenesis.
Ralf Conrad, Bo Fu, He Liu
exaly   +3 more sources

Bioaugmentation in anaerobic digesters: a systematic review [PDF]

open access: yesBiotechnology for Biofuels and Bioproducts
Bioaugmentation, the intentional introduction of specific microorganisms into anaerobic digestion (AD) systems, has shown promise in enhancing methane production and in mitigating stressful conditions, particularly in systems operating below optimal ...
Mozhdeh Alipoursarbani   +3 more
doaj   +2 more sources

Enhanced Acetogenesis of Waste Activated Sludge by Conditioning with Processed Organic Wastes in Co-Fermentation: Kinetics, Performance and Microbial Response

open access: yesEnergies, 2020
Aimed at the low ratio of carbon and nitrogen (C/N, approximately 7/1) of waste activated sludge (WAS), which would inhibit the acetogenesis process during anaerobic fermentation, this study introduced three brewing wastes, including vinegar (VR ...
Cristiano Varrone   +2 more
exaly   +3 more sources

Reductive acetogenesis is a dominant process in the ruminant hindgut [PDF]

open access: yesMicrobiome
Background The microbes residing in ruminant gastrointestinal tracts play a crucial role in converting plant biomass to volatile fatty acids, which serve as the primary energy source for ruminants.
Qiushuang Li   +16 more
doaj   +2 more sources

Methods of Pretreating Raw Materials Containing Organic Compounds before Anaerobic Digestion

open access: yesИнженерные технологии и системы, 2022
Introduction. The volume of accumulated organ-containing non-recyclable waste products in Russia is increasing. Existing technologies make it possible to recycle these waste products through using anaerobic digestion to produce biogas and fertilizers ...
Viktor V. Palvinskiy   +2 more
doaj   +1 more source

Ancient Metabolisms of a Thermophilic Subseafloor Bacterium

open access: yesFrontiers in Microbiology, 2021
The ancient origins of metabolism may be rooted deep in oceanic crust, and these early metabolisms may have persisted in the habitable thermal anoxic aquifer where conditions remain similar to those when they first appeared.
Amy R. Smith   +5 more
doaj   +1 more source

Understanding the Role of Free-Living Bacteria in the Gut of the Lower Termite Coptotermes gestroi Based on Metagenomic DNA Analysis

open access: yesInsects, 2023
Termites’ digestive systems, particularly in lower termites with the presence of protozoa, are unique ecological niches that shelter a diverse microbiota with a variety of functions for the host and the environment.
Thi Huyen Do   +3 more
doaj   +1 more source

Biophysical and Biochemical Characterization of TP0037, a d-Lactate Dehydrogenase, Supports an Acetogenic Energy Conservation Pathway in Treponema pallidum

open access: yesmBio, 2020
A longstanding conundrum in Treponema pallidum biology concerns how the spirochete generates sufficient energy to fulfill its complex pathogenesis processes during human syphilitic infection.
Ranjit K. Deka   +3 more
doaj   +1 more source

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