Results 31 to 40 of about 841 (169)

The role of ethanol oxidation during carboxydotrophic growth of Clostridium autoethanogenum

open access: yesMicrobial Biotechnology, Volume 16, Issue 11, Page 2082-2093, November 2023., 2023
Ethanol can be an end product of acetogenic carbon monoxide fermentation. Here we show that during carboxydotorphic growth of C. autoethanogenum, ethanol is not only an end product, but that is also acts as temporary storage for energy and reduction equivalents.
Martijn Diender   +5 more
wiley   +1 more source

Valorization of brewery waste slurry with glycerol as co‐substrate for hydrogen and butyrate production using dark fermentation

open access: yesJournal of Chemical Technology &Biotechnology, Volume 98, Issue 8, Page 1975-1985, August 2023., 2023
Abstract BACKGROUND Among the methods to produce hydrogen biologically, dark fermentation stands out mainly due to its low operating requirements. Organic wastes, such as brewing industry waste slurries and glycerol, can provide a cost‐effective feedstock with the additional potential of generating value‐added byproducts, while addressing a wastewater ...
Rafael Garduno   +2 more
wiley   +1 more source

Aquatic biomass as sustainable feedstock for biorefineries

open access: yesBiofuels, Bioproducts and Biorefining, Volume 17, Issue 4, Page 1012-1029, July/August 2023., 2023
Abstract The development of biorefineries is a crucial step in the circular economy framework. In biorefineries, research is intensified towards utilizing feedstocks, which do not need arable land or compete with food sources. In this scenario, emerged, submerged and free‐floating aquatic plants are garnering significant attention as potential ...
Kotamraju Amulya   +2 more
wiley   +1 more source

Overflow metabolism at the thermodynamic limit of life: How carboxydotrophic acetogens mitigate carbon monoxide toxicity

open access: yesMicrobial Biotechnology, Volume 16, Issue 4, Page 697-705, April 2023., 2023
Microorganisms have a pivotal role in the production of biofuels. Here, we explain how microorganisms that consume (waste) carbon monoxide can be pushed to produce bioethanol. Abstract Carboxydotrophic metabolism is gaining interest due to its applications in gas fermentation technology, enabling the conversion of carbon monoxide to fuels and ...
Maximilienne T. Allaart   +3 more
wiley   +1 more source

SpoIIE Regulates Sporulation but Does Not Directly Affect Solventogenesis in Clostridium acetobutylicum ATCC 824 [PDF]

open access: yesJournal of Bacteriology, 2005
ABSTRACT Using gene expression reporter vectors, we examined the activity of the spoIIE promoter in wild-type and spo0A -deleted strains of Clostridium acetobutylicum ATCC 824.
Miles C, Scotcher, George N, Bennett
openaire   +2 more sources

Biohydrogen production from food waste and waste activated sludge in codigestion: influence of organic loading rate and changes in microbial community

open access: yesJournal of Chemical Technology &Biotechnology, Volume 98, Issue 1, Page 230-237, January 2023., 2023
Abstract BACKGROUND Food waste (FW) and waste activated sludge (WAS) are complementary substrates that improve H2 production by dark fermentation. However, there is little experience in the process performance in the long‐term operation of reactors co‐processing FW–WAS.
Iván Moreno‐Andrade   +2 more
wiley   +1 more source

[Retracted] Modified Activated Carbon: A Supporting Material for Improving Clostridium beijerinckii TISTR1461 Immobilized Fermentation

open access: yesBioinorganic Chemistry and Applications, Volume 2023, Issue 1, 2023., 2023
This study aimed to investigate the effect of activated carbon (AC) as an immobilization material in acetone‐butanol‐ethanol fermentation. The AC surface was modified with different physical (orbital shaking and refluxing) and chemical (nitric acid, sodium hydroxide and, (3‐aminopropyl)triethoxysilane (APTES)) treatments to enhance the biobutanol ...
Piyawat Chinwatpaiboon   +5 more
wiley   +1 more source

Solventogenesis in Clostridium acetobutylicum fermentations related to carboxylic acid and proton concentrations

open access: yesBiotechnology and Bioengineering, 1988
AbstractThe mechanism primarily implicated in the solventogenesis process in batch fermentations of Clostridium acetobutylicum is examined in considerable detail. A variety of fermentations with or without pH control in the pH range of 3.7–6 have been carried out in order to examine which of a host of suspect parameters correlate with the initiation of
M H, Hüsemann, E T, Papoutsakis
  +8 more sources

High methanol‐to‐formate ratios induce butanol production in Eubacterium limosum

open access: yesMicrobial Biotechnology, Volume 15, Issue 5, Page 1542-1549, May 2022., 2022
Eubacterium limosum ATCC8486 was grown on methanol and formate as substrates, finding evidence of native butanol production. Both methanol and formate are required for high growth rates and cell density, with formate being the preferred substrate. Butyrate is the major fermentation product, however, increasing the methanol‐to‐formate ratio favours the ...
Jamin C. Wood   +3 more
wiley   +1 more source

Analysis of Tn916-induced mutants ofClostridium acetobutylicum altered in solventogenesis and sporulation

open access: yesJournal of Industrial Microbiology, 1994
The conjugative transposon Tn916 was used for mutagenesis of Clostridium acetobutylicum ATCC 824. Tetracycline-resistant mutants were screened for loss of granulose synthesis and five classes of granulose mutants, that contained single transposon insertions, were identified on the basis of altered solvent production.
D M, Mattsson, P, Rogers
openaire   +2 more sources

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