OXYGEN REGULATING EFFECT ON SUBSTRATE CONSTANT OF CANDIDA-UTILIS CHEMOSTAT CULTURE

The dissolved oxygen content in the Candida utilis chemostat culture m edium changed, accompanied by changes in affinity values for ethanol a nd oxygen. The lowest affinities for ethanol and the highest for oxyge n were noted when oxygen was strictly limited. When carbon and energy served as the limiting factors, maximum cell. affinity was for ethanol , and minimum, for oxygen. When dissolved oxygen as the limiting facto r was increased, the carbon-containing substrate consumption rate was increased for maintenance of viable cells (m).