Higher butanol titer and selectivity in electro-fermentation experiments with Clostridium acetobutylicum ATCC 824 are due mainly to methyl viologen rather than electrode polarization.

Edouard Beudy, Sandra Menir, Michel Laurent, Fadhel Ben Chaabane, Théodore Bouchez, Hélène Velly

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Article in Bioprocess and biosystems engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Edouard BeudyIFP Energies nouvelles, Rueil-Malmaison, France.ORCID http://orcid.org/0009-0000-9175-4593

Sandra MenirIFP Energies nouvelles, Rueil-Malmaison, France.

Michel LaurentUniversité Paris-Saclay, INRAE, UR PROSE, Antony, France.

Fadhel Ben ChaabaneIFP Energies nouvelles, Rueil-Malmaison, France.ORCID http://orcid.org/0000-0002-6725-1061

Théodore BouchezUniversité Paris-Saclay, INRAE, UR PROSE, Antony, France.ORCID http://orcid.org/0000-0002-2236-8282

Hélène VellyIFP Energies nouvelles, Rueil-Malmaison, France. helene.velly@ifpen.fr.ORCID http://orcid.org/0000-0002-6433-4822

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Butanol selectivity is crucial for the development of an industrial process targeting butanol as the main product of acetone-butanol-ethanol (ABE) fermentation by solventogenic Clostridia. This study evaluated electro-fermentation (EF), with an electron carrier, methyl viologen (MV), as a strategy to modify solvent production in Clostridium acetobutylicum ATCC 824 under optimized batch fermentation conditions. Cathodic EF was performed with or without 0.5 mM MV in single-compartment reactors with two-chamber and a negative potential was applied to the cathode. The greatest differences in final products concentrations were observed with the addition of MV compared to the control and EF fermentations. The fermentation with MV only was slowed down and resulted in 11% more butanol (control: 14.2 g.L

Indexed as

ButanolsClostridium acetobutylicumFermentationParaquatAcetoneBioreactorsElectrodesAcetoneButanolsParaquatButanolClostridium acetobutylicumElectro-fermentationMethyl viologenRedoxSelectivity

Identifiers

PMID40883482

DOI10.1007/s00449-025-03212-7

PMCPMC12460373

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LicenceCC BY-NC-ND

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.