Journal of Industrial Microbiology

, Volume 3, Issue 4, pp 241–251 | Cite as

Screening of yeasts for production of xylitol fromd-xylose and some factors which affect xylitol yield inCandida guilliermondii

  • Maria F. S. Barbosa
  • Maria B. de Medeiros
  • Ismael M. de Mancilha
  • Henry Schneider
  • Hung Lee
Original Papers

Summary

The ability to convertd-xylose to xylitol was screened in 44 yeasts from five genera. All but two of the strains produced some xylitol with varying rates and yields. The best xylitol producers were localized largely in the speciesCandida guilliermondii andC. tropicalis. Factors affecting xylitol production by a selectedC. guilliermondii strain, FTI-20037, were investigated. The results showed that xylitol yield by this strain was affected by the nitrogen source. Yield was highest at 30–35°C, and could be increased with decreasing aeration rate. Using high cell density and a defined medium under aerobic conditions, xylitol yield byC. guilliermondii FTI-20037 from 104 g/ld-xylose was found to be 77.2 g/l. This represented a yield of 81% of the theoretical value, which was computed to be 0.9 mol xylitol per mold-xylose.

Key words

Hemicellulose Fermentation Polyol Pentose d-Xylose Xylitol 

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Copyright information

© Society for Industrial Microbiology 1988

Authors and Affiliations

  • Maria F. S. Barbosa
    • 1
  • Maria B. de Medeiros
    • 1
  • Ismael M. de Mancilha
    • 1
  • Henry Schneider
    • 2
  • Hung Lee
    • 2
  1. 1.Biotechnology DivisionFoundation for Industrial TechnologySao PauloBrazil
  2. 2.Division of Biological SciencesNational Research Council of CanadaOttawaCanada

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