Summary
Batch cultures of Clostridium acetobutylicum at controlled pH values of 5 and 5.5 were carried out in a three-electrode potentiometric system with methyl viologen (1 mM) as electron carrier. Although an irreversible loss of methyl viologen at the electrode surface was observed, a significant increase in alcohol yield was obtained. In comparison to control fermentation with or without methyl viologen addition, the butanol yield improvements were respectively of 7 or 51% at pH 5, and 56 or 467% at pH 5.5.
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Peguin, S., Delorme, P., Goma, G. et al. Enhanced alcohol yields in batch cultures of Clostridium acetobutylicum using a three-electrode potentiometric system with methyl viologen as electron carrier. Biotechnol Lett 16, 269–274 (1994). https://doi.org/10.1007/BF00134624
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DOI: https://doi.org/10.1007/BF00134624