Ethanol fermentation on glucose/xylose mixture by co-cultivation of restricted glucose catabolite repressed mutants of Pichia stipitis with respiratory deficient mutants of Saccharomyces cerevisiae.

Abstract excerpt

Restricted glucose catabolite repressed mutants of P. stipiti CCY 39501 were selected using UV irradiation. Four mutants were obtained which assimilated glucose slower than the native strain of P. stipitis and the degree of glucose repression was about 2-fold lower for P5-90-133 and P5-200-16 mutants and about 10-fold lower for P5-80-7 and P5-80-35 mutants. P5-80-7 and P5-80-35 produced very small amounts of...

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