Results 71 to 80 of about 287 (125)

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

Environmental Microbiology, Volume 28, Issue 4, April 2026.
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.
Florian P. Rosenbaum, Anja Poehlein, Rolf Daniel, Volker Müller   +3 more
wiley   +1 more source

A deeply branching thermophilic bacterium with an ancient acetyl-CoA pathway dominates a subsurface ecosystem. [PDF]

PLoS ONE, 2012
A nearly complete genome sequence of Candidatus 'Acetothermum autotrophicum', a presently uncultivated bacterium in candidate division OP1, was revealed by metagenomic analysis of a subsurface thermophilic microbial mat community.
Hideto Takami, Hideki Noguchi, Yoshihiro Takaki, Ikuo Uchiyama, Atsushi Toyoda, Shinro Nishi, Gab-Joo Chee, Wataru Arai, Takuro Nunoura, Takehiko Itoh, Masahira Hattori, Ken Takai   +11 more
doaj   +1 more source

Robust Performance of Sub‐Thermophilic Anaerobic Digestion Enabled by Microbial Functional Redundancy

Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
We tested whether anaerobic digesters could operate at lower temperatures without losing methane production. Pilot‐scale reactors were run at 48°C or 55°C. Methane yields and gas quality were similar. Lower temperatures reduced volatile fatty acids and supported more diverse microbial communities.
Richard K. Tennant, Olukayode Kuloyo, Andrew G. Moody, Jose R. Lopez, Ashley V. Baugh, Jason R. Jiminez, Gabrielle R. Joslin, Damian J. Allen, Phillip G. Hamilton, David A. Parker, Jeffrey R. Fedenko   +10 more
wiley   +1 more source

Pathway engineering and synthetic biology using acetogens [PDF]

FEBS Letters, 2012
Acetogenic anaerobic bacteria are defined as organisms employing the Wood–Ljungdahl pathway to synthesize acetyl‐CoA from CO2 or CO. Their autotrophic mode of metabolism offers the biotechnological chance to combine use of abundantly available substrates with reduction of greenhouse gases.
Schiel-Bengelsdorf, Bettina, Dürre, Peter   +1 more
openaire   +2 more sources

Volumetric mass transfer and dilution rate as key parameters for sustainable industrial syngas fermentation to isopropyl alcohol: modeling and parametric assessment

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 2, Page 473-486, March/April 2026.
Abstract Synthesis gas fermentation is a promising route for the valorization of steel mill off‐gas and for replacing conventional fossil‐based isopropyl alcohol (IPA) production. A recent 120 L pilot‐scale study reported 85% gas conversion at 90% product selectivity and claimed a negative global warming potential (GWP) without detailed process design.
Gijs J. A. Brouwer, Melvin J. G. Lourdusamy, Misza Jansen, John A. Posada   +3 more
wiley   +1 more source

The Prebiotic and Techno‐Functional Potential of Microbial Exopolysaccharides for Human Health and Food Systems

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 2, March 2026.
ABSTRACT Microbial exopolysaccharides (EPS) represent a diverse class of biopolymers holding considerable promise as functional food ingredients. This review analyzes the dual function of microbial EPS as a candidate for prebiotic agents and techno‐functional additives.
Md. Abdur Razzak, Hye Kim, Md. Ariful Haque, Min Ji Jang, Sehyeon Song, Anishka Talari, Lakshmi Devi Chittepu, Seockmo Ku   +7 more
wiley   +1 more source

Careful CO Addition Enhances Autotrophic d‐Lactate Formation With Engineered Acetobacterium woodii

Engineering in Life Sciences, Volume 26, Issue 2, February 2026.
ABSTRACT The acetogen A. woodii efficiently converts CO2 and H2 to acetate. Metabolic engineering enabled the autotrophic production of non‐native products, for example, d‐lactate from CO2 by overexpression of d‐lactate dehydrogenase from Leuconostoc mesenteroides and knockout of the native lactate dehydrogenase. During gas fermentation with acetogens,
Anna Stock, Inka Sotzeck, Kira Baur, Frank Bengelsdorf, Dirk Weuster‐Botz   +4 more
wiley   +1 more source

Revealing formate production from carbon monoxide in wild type and mutants of Rnf‐ and Ech‐containing acetogens, Acetobacterium woodii and Thermoanaerobacter kivui

Microbial Biotechnology, 2020
Summary Acetogenic bacteria have gained much attraction in recent years as they can produce different biofuels and biochemicals from H2 plus CO2 or even CO alone, therefore opening a promising alternative route for the production of biofuels from ...
Fabian M. Schwarz, Sarah Ciurus, Surbhi Jain, Christoph Baum, Anja Wiechmann, Mirko Basen, Volker Müller   +6 more
doaj   +1 more source

Carboxydotrophic Acetogenesis in Alkaline Conditions Results in Transient Formate Production by the Halo‐Alkaliphilic Acetogen Haloacetibacter carboxydivorans Gen. Nov. sp. Nov

Environmental Microbiology Reports, Volume 18, Issue 1, February 2026.
This work presents the physiological exploration of the halo‐alkaliphilic, carboxydotrophic acetogen bacterium MD4. In contrast to well‐characterised neutrophilic and slightly acidophilic acetogenic carboxydotrophs, this work shows an important role for formate production, instead of ethanol, as a redox exhaust mechanism in alkaline conditions ...
Martijn Diender, Isabelle M. Keijsers, Anastasia Galani, Timo van Roosmalen, Alfons J. M. Stams, Diana Z. Sousa   +5 more
wiley   +1 more source

Acetogenesis in the energy-starved deep biosphere – a paradox?

Frontiers 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
Mark Alexander Lever
doaj   +1 more source