Effect of biotin limitation on the conversion of xylose to ethanol and xylitol by Pachysolen tannophilus and Candida guilliermondii

Authors

Hung Lee, University of Guelph
Audrey L. Atkin, University of Nebraska-LincolnFollow
Maria F.S. Barbosa, National Research Council of Canada
Delbert R. Dorscheid, National Research Council of Canada
Henry Schneider, National Research Council of Canada

Document Type

Article

Date of this Version

1988

Citation

Published in Enzyme and Microbial Technology 10:2 (February 1988), pp. 81–84

Comments

Copyright © 1988 Elsevier. Used by permission. This work is released with a Creative Commons Attribution-NonCommercial-No Derivatives license.

Abstract

The relative amount of ethanol and xylitol accumulated in aerobic batch cultures of Pachysolen tannophilus and Candida guilliermondii on D-xylose depended on the extent of limitation by biotin. In high biotin media P. tannophilus favored ethanol production over that of xylitol while C. guilliermondii favored xylitol formation. However, as the extent of biotin limitation increased, the ratio of ethanol to xylitol produced by both organisms increased. The results are of interest in efforts to control such ratios.