Aerobic formation of ethanol by Saccharomyces cerevisiae in a computerized pHauxostat
Abstract A computerized pHauxostat was used for investigating oxidoreductive metabolism of yeast. Elevated glucose concentrations due to high dilution rates overloaded aerobic respiratory capacity and induced formation of ethanol. Although specific productivity of ethanol was excellent at low concentrations of glucose, ethanol toxicity caused diminished productivity and uneconomic concentrations of ethanol with industrial-strength substrate.