Effect of increased hydrogen partial pressure on the acetone-butanol fermentation by Clostridium acetobutylicum

摘要: Elevated H2 partial pressure in the acetone-butanol fermentation increased butanol and ethanol yields on glucose by an average of 18% 13%, respectively, while respective acetone endogenous decreased 40% 30%, almost no effect was observed growth culture. The to ratio fraction total solvents were also with pressure. There major differences pattern change pressurization at either t=0 or t=18 h. results demonstrate importance regulation C. acetobutylicum metabolism.