Conversion of D‐xylose to ethanol by the yeast Pachysolen tannophilus

Abstract
The yeast Pachysolen tannophilus was found to be capable of converting D-xylose to ethanol. Batch cultures initially containing 50 g/L D-xylose yielded 0.34 g of ethanol per gram of pentose consumed. Aerobic conditions were required for cell growth but not for ethanol production. Both alcohol formation and growth were optimum when incubation temperature was 32°C, when pH was near 2.5, and when D-xylose and ethanol concentrations did not exceed 50 and 20 g/L, respectively.

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