Advertisement

Biotechnology Letters

, Volume 7, Issue 6, pp 431–436 | Cite as

Comparative evaluation of ethanol production by xylose-fermenting yeasts presented high xylose concentrations

  • P. J. Slininger
  • R. J. Bothast
  • M. R. Okos
  • M. R. Ladisch
Article

Summary

Three strains ofPichiastipitis and three ofCandidashehatae were compared withPachysolentannophilus in their abilities to ferment xylose at concentrations as high as 200 g/L when subjected to both aerobic and microaerophilic conditions. Evaluations based on accumulated ethanol concentrations, ethanol productivities, xylose consumption, and ethanol and xylitol yields were determined from batch culture time courses. Of the strains considered,P.stipitis NRRL Y-7124 seemed most promising since it was able to utilize all but 7 g/L of 150 g/L xylose supplied aerobically to produce 52 g/L ethanol at a yield of 0.39 g per gram xylose (76% of theoretical yield) and at a rate comparable to the fastest shown byC.shehatae NRRL Y-12878. For all strains tested, fermentation results from aerobic cultures were more favorable than those from microaerophilic cultures.

Keywords

Fermentation Xylose Ethanol Production Batch Culture Ethanol Concentration 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bolen, P.L., and Slininger, P.J. (1984).Developments in Industrial Microbiology 25:449–457.Google Scholar
  2. 2.
    Bruinenberg, P.M., deBot, P.H.M., Van Dijken, J.P., and Scheffers, W.A. (1984).Appl. Microbiol. Biotechnol. 19:256–260.Google Scholar
  3. 3.
    du Preez, J.C., and Van der Walt, J.P. (1983).Biotechnol. Lett. 5(5):357–362.Google Scholar
  4. 4.
    du Preez, J.C., Prior, B.A., and Monteiro, A.M.T. (1984).Appl. Microbiol. Biotechnol. 19:261–266.Google Scholar
  5. 5.
    Ladisch, M.R., and Dyck, K. (1979).Science 205:898–900.Google Scholar
  6. 6.
    Schneider, H., Wang, P.Y., Chan, Y.K., and Maleszka, R. (1981).Biotechnol. Lett. 3:89–92.Google Scholar
  7. 7.
    Slininger, P.J., Bothast, R.J., Van Cauwenberge, J.E., and Kurtzman, C.P. (1982).Biotechnol. Bioeng. 24:371–384.Google Scholar
  8. 8.
    Toivola, A., Yarrow, D., Van Den Bosch, E., Van Dijken, J. P., and Scheffers, W. A. (1984).Appl. Environ. Microbiol. 47:1221–1223.Google Scholar

Copyright information

© Kluwer Academic Publishers 1985

Authors and Affiliations

  • P. J. Slininger
    • 1
  • R. J. Bothast
    • 1
  • M. R. Okos
    • 2
  • M. R. Ladisch
    • 2
  1. 1.Northern Regional Research CenterAgricultucal Research Servicet U.S. Department of AgriculturePeoria
  2. 2.Laboratory of Renewable Resources EngineeringPurdue UniversityWest Lafayette

Personalised recommendations