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Toxicity of hardwood extractives toward Saccharomyces cerevisiae glucose fermentation

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Abstract

The toxicity of oak and yellow-poplar wood extracts, as well as a first-stage hardwood hydrolyzate liquor prepared from a red oak:white oak:yellow-poplar (1:1:1) sawdust, on Saccharomyces cerevisiae D5A was examined. Acetone/water and hot methanol extracts of solid biomass samples from white oak, red oak, and yellow-poplar gave 88-94% of the ethanol produced with controls. The organism was tolerant to the compounds present in the xylose-rich hydrolyzate, with fermentation efficiency being improved to 97% of that obtained with controls by using an overliming/thermal conditioning protocol.

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Authors and Affiliations

  1. Fralin Biotechnology Center, Department of Wood Science and Forest Products, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061-0346, USA

    T.D. Ranatunga, J. Jervis & R.F. Helm

  2. Biotechnology Center for Fuels and Chemicals, National Renewable Energy Laboratory, Golden, CO, 80401-3393, USA

    J.D. McMillan & C. Hatzis

Authors
  1. T.D. Ranatunga
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  2. J. Jervis
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  3. R.F. Helm
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  4. J.D. McMillan
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  5. C. Hatzis
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Ranatunga, T., Jervis, J., Helm, R. et al. Toxicity of hardwood extractives toward Saccharomyces cerevisiae glucose fermentation. Biotechnology Letters 19, 1125–1127 (1997). https://doi.org/10.1023/A:1018400912828

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  • DOI: https://doi.org/10.1023/A:1018400912828

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