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Ethanol fermentation from lignocellulosic hydrolysate by a recombinant xylose- and cellooligosaccharide-assimilating yeast strain

Abstract

The sulfuric acid hydrolysate of lignocellulosic biomass, such as wood chips, from the forest industry is an important material for fuel bioethanol production. In this study, we constructed a recombinant yeast strain that can ferment xylose and cellooligosaccharides by integrating genes for the intercellular expressions of xylose reductase and xylitol dehydrogenase from Pichia stipitis, and xylulokinase from Saccharomyces cerevisiae and a gene for displaying β-glucosidase from Aspergillus acleatus on the cell surface. In the fermentation of the sulfuric acid hydrolysate of wood chips, xylose and cellooligosaccharides were completely fermented after 36 h by the recombinant strain, and then about 30 g/l ethanol was produced from 73 g/l total sugar added at the beginning. In this case, the ethanol yield of this recombinant yeast was much higher than that of the control yeast. These results demonstrate that the fermentation of the lignocellulose hydrolysate is performed efficiently by the recombinant Saccharomyces strain with abilities for xylose assimilation and cellooligosaccharide degradation.

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Acknowledgements

We thank Takeshi Sumiyoshi, JGC corporation, for providing the lignocellulose hydrolysate and Professor Mitsuyoshi Ueda of the Laboratory of Biomacromolecular Chemistry, Department of Applied Biochemistry, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, for his invaluable suggestions. This work was financed by the New Energy and Industrial Technology Development Organization (NEDO), Tokyo, Japan.

Author information Authors and Affiliations
  1. Division of Molecular Science, Graduate School of Science and Technology, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, 657-8501, Japan

    Satoshi Katahira & Hideki Fukuda

  2. Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, 657-8501, Japan

    Atsuko Mizuike & Akihiko Kondo

Authors
  1. Satoshi Katahira
  2. Atsuko Mizuike
  3. Hideki Fukuda
  4. Akihiko Kondo
Corresponding author

Correspondence to Akihiko Kondo.

About this article Cite this article

Katahira, S., Mizuike, A., Fukuda, H. et al. Ethanol fermentation from lignocellulosic hydrolysate by a recombinant xylose- and cellooligosaccharide-assimilating yeast strain. Appl Microbiol Biotechnol 72, 1136–1143 (2006). https://doi.org/10.1007/s00253-006-0402-x

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