Summary
Elevated H2 partial pressure in the acetone-butanol fermentation increased the butanol and ethanol yields on glucose by an average of 18% and 13%, respectively, while the respective yields of acetone and of the endogenous H2 decreased by an average of 40% and 30%, and almost no effect was observed on the growth of the culture. The butanol to acetone ratio and the fraction of butanol in the total solvents were also increased with the H2 pressure. There were no major differences in the observed pattern of change with pressurization at either t=0 or t=18 h. The results demonstrate the importance of H2 partial pressure in the regulation of the C. acetobutylicum metabolism.
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Yerushalmi, L., Volesky, B. & Szczesny, T. Effect of increased hydrogen partial pressure on the acetone-butanol fermentation by Clostridium acetobutylicum . Appl Microbiol Biotechnol 22, 103–107 (1985). https://doi.org/10.1007/BF00250028
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DOI: https://doi.org/10.1007/BF00250028