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Applied Microbiology and Biotechnology

, Volume 31, Issue 5–6, pp 592–596 | Cite as

Comparative fermentability of enzymatic and acid hydrolysates of steam-pretreated aspenwood hemicellulose by Pichia stipitis CBS 5776

  • J. Jeffrey Wilson
  • Lise Deschatelets
  • Nora K. Nishikawa
Environmental Microbiology

Summary

Enzymatic hydrolysates of hemicellulose from steam-pretreated aspenwood were more fermentable than the acid hydrolysate after rotoevaporation or ethyl acetate extraction treatments to remove acetic acid and sugar- and lignin-degradation products prior to fermentation by Pichia stipitis CBS 5776. Total xylose and xylobiose utilization from 5.0% (w/v) ethyl acetate extracted enzymatic hydrolysate was observed with an ethanol yield of 0.47 g ethanol/g total available substrate and an ethanol production rate of 0.20 g·l-1 per hour in 72 h batch fermentation.

Keywords

Fermentation Acetic Acid Ethyl Acetate Xylose Hemicellulose 
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 1989

Authors and Affiliations

  • J. Jeffrey Wilson
    • 1
  • Lise Deschatelets
    • 1
  • Nora K. Nishikawa
    • 1
  1. 1.Biotechnology and Chemistry DepartmentForintek Canada CorporationOttawaCanada

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