Biotechnology Letters

, Volume 23, Issue 16, pp 1327–1333 | Cite as

Simultaneous saccharification and fermentation of lime-treated biomass

  • Vincent S. Chang
  • William E. Kaar
  • Barry Burr
  • Mark T. Holtzapple
Article

Abstract

Simultaneous saccharification and fermentation (SSF) was performed on lime-treated switchgrass and corn stover, and oxidatively lime-treated poplar wood to determine their compatibility with Saccharomyces cerevisiae. Cellulose-derived glucose was extensively utilized by the yeast during SSF. The ethanol yields from pretreated switchgrass, pretreated corn stover, and pretreated-and-washed poplar wood were 72%, 62% and 73% of theoretical, respectively, whereas those from α-cellulose were 67 to 91% of theoretical. The lower ethanol yields from treated biomass resulted from lower cellulose digestibilities rather than inhibitors produced by the pretreatment. Oxidative lime pretreatment of poplar wood increased the ethanol yield by a factor of 5.6, from 13% (untreated) to 73% (pretreated-and-washed).

biomass ethanol fermentation lime pretreatment 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Vincent S. Chang
    • 1
  • William E. Kaar
    • 1
  • Barry Burr
    • 1
  • Mark T. Holtzapple
    • 1
  1. 1.Department of Chemical EngineeringTexas A&M University, College StationUSA

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