Results 11 to 20 of about 1,079 (172)

Sporulation in solventogenic and acetogenic clostridia [PDF]

Applied Microbiology and Biotechnology, 2021
AbstractThe Clostridium genus harbors compelling organisms for biotechnological production processes; while acetogenic clostridia can fix C1-compounds to produce acetate and ethanol, solventogenic clostridia can utilize a wide range of carbon sources to produce commercially valuable carboxylic acids, alcohols, and ketones by fermentation. Despite their
Diallo, Mamou, Kengen, Servé W.M., López-Contreras, Ana M.   +2 more
openaire   +3 more sources

Isobutanol Production by Autotrophic Acetogenic Bacteria [PDF]

Frontiers in Bioengineering and Biotechnology, 2021
Two different isobutanol synthesis pathways were cloned into and expressed in the two model acetogenic bacteria Acetobacterium woodii and Clostridium ljungdahlii. A. woodii is specialized on using CO2 + H2 gas mixtures for growth and depends on sodium ions for ATP generation by a respective ATPase and Rnf system. On the other hand, C. ljungdahlii grows
Weitz, Sandra, Hermann, Maria, Linder, Sonja, Bengelsdorf, Frank R., Takors, Ralf, Dürre, Peter   +5 more
openaire   +4 more sources

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

Environ Microbiol Rep
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 ...
Diender M, Keijsers IM, Galani A, van Roosmalen T, Stams AJM, Sousa DZ.   +5 more
europepmc   +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

Microbial Electrosynthesis Reshapes Energy Metabolism and Physiology in Clostridium ljungdahlii. [PDF]

Microb Biotechnol
Microbial electrosynthesis drives Clostridium ljungdahlii into a distinct stress‐associated physiological state, different from gas fermentation. Comparative multi‐omics and electron microscopy reveal physiological constraints that help explain the poor performance of MES.
Al Sbei S, Boto ST, Krüger T, Papenfort K, Westermann M, Jost A, Harnisch F, Brakhage AA, Rosenbaum MA.   +8 more
europepmc   +2 more sources

Screening of Gas Substrate and Medium Effects on 2,3-Butanediol Production with C. ljungdahlii and C. autoethanogenum Aided by Improved Autotrophic Cultivation Technique

Fermentation, 2021
Gas fermentation by acetogens of the genus Clostridium is an attractive technology since it affords the production of biochemicals and biofuels from industrial waste gases while contributing to mitigate the carbon cycle alterations.
Luca Ricci, Valeria Agostino, Debora Fino, Angela Re   +3 more
doaj   +1 more source

Effects of Lignin Gasification Impurities on the Growth and Product Distribution of Butyribacterium methylotrophicum during Syngas Fermentation

Energies, 2023
This work evaluated the effects of condensable syngas impurities on the cell viability and product distribution of Butyribacterium methylotrophicum in syngas fermentation.
Marta Pacheco, Filomena Pinto, Anders Brunsvik, Rui André, Paula Marques, Ricardo Mata, Joana Ortigueira, Francisco Gírio, Patrícia Moura   +8 more
doaj   +1 more source

Faster Growth Enhances Low Carbon Fuel and Chemical Production Through Gas Fermentation

Frontiers in Bioengineering and Biotechnology, 2022
Gas fermentation offers both fossil carbon-free sustainable production of fuels and chemicals and recycling of gaseous and solid waste using gas-fermenting microbes.
Lorena Azevedo de Lima, Henri Ingelman, Kush Brahmbhatt, Kristina Reinmets, Craig Barry, Audrey Harris, Esteban Marcellin, Michael Köpke, Kaspar Valgepea   +8 more
doaj   +1 more source

Reprogramming Microbial CO2-Metabolizing Chassis With CRISPR-Cas Systems

Frontiers in Bioengineering and Biotechnology, 2022
Global warming is approaching an alarming level due to the anthropogenic emission of carbon dioxide (CO2). To overcome the challenge, the reliance on fossil fuels needs to be alleviated, and a significant amount of CO2 needs to be sequestrated from the ...
Hai-Yan Yu, Hai-Yan Yu, Shu-Guang Wang, Shu-Guang Wang, Peng-Fei Xia   +4 more
doaj   +1 more source

Deletion of genes linked to the C1-fixing gene cluster affects growth, by-products, and proteome of Clostridium autoethanogenum

Frontiers in Bioengineering and Biotechnology, 2023
Gas fermentation has emerged as a sustainable route to produce fuels and chemicals by recycling inexpensive one-carbon (C1) feedstocks from gaseous and solid waste using gas-fermenting microbes.
Ugochi Jennifer Nwaokorie, Kristina Reinmets, Lorena Azevedo de Lima, Pratik Rajendra Pawar, Kurshedaktar Majibullah Shaikh, Audrey Harris, Michael Köpke, Kaspar Valgepea   +7 more
doaj   +1 more source