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Applied Microbiology and Biotechnology

, Volume 29, Issue 2–3, pp 282–288 | Cite as

Levels of pentose phosphate pathway enzymes fromCandida shehatae grown in continuous culture

  • M. A. Alexander
  • V. W. Yang
  • T. W. Jeffries
Applied Microbiology
  • 35 Downloads

Summary

Candida shehatae exhibits different fermentative capacities when grown under different aeration conditions. These studies investigated the titers of xylose reductase, xylitol dehydrogenase, glucose-6-phosphate dehydrogenase and alcohol dehydrogenase in crude extracts ofCandida shehatae grown in continuous culture with various specific aeration rates. Carbon source, aeration rate, dilution rate and temperature were examined as variables. Xylose reductase and xylitol dehydrogenase were induced by xylose and were largely absent in glucose-grown cells. Alcohol dehydrogenae levels were higher in glucose-grown cells than in xylose-grown cells. The levels of this enzyme also correlated with the fermentative character of metabolism, having a low value under fully aerobic conditions, a high value under anaerobic conditions, and intermediate levels under various semi-aerobic conditions. Temperature had no effect on any enzyme level over the range of 20–30°C.

Keywords

Xylose Candida Xylitol Alcohol Dehydrogenase Dilution Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • M. A. Alexander
    • 1
  • V. W. Yang
    • 2
  • T. W. Jeffries
    • 2
  1. 1.Department of Chemical EngineeringUniversity of WisconsinMadisonUSA
  2. 2.Institute for Microbial and Biochemical TechnologyForest Products LaboratoryMadisonUSA

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