Acetaldehyde stimulation of the growth of Saccharomyces cerevisiae in the presence of inhibitors found inlignocellulose-to-ethanol fermentations

  • A R Barber
  • H Hansson
  • N B Pamment

DOI: 10.1038/sj.jim.7000031

Cite this article as:
Barber, A., Hansson, H. & Pamment, N. J Ind Microbiol Biotech (2000) 25: 104. doi:10.1038/sj.jim.7000031

The addition of small quantities of acetaldehyde to fermentations containing inhibitory concentrations of furfural, acetate and other compounds typically present in lignocellulosic hydrolyzates significantly reduced the lag phase of yeast growth and stimulated ethanol production. Similar effects were observed when acetaldehyde (0.06 g l−1) was added to fermentations of a birch wood hydrolyzate produced by steam/acid pretreatment. Acetaldehyde addition appears to have potential as a low-cost alternative (or adjunct) to current procedures for medium detoxification in lignocellulose-to-ethanol fermentations, particularly those in which high inhibitor concentrations are generated through recycling of the culture broth. Journal of Industrial Microbiology & Biotechnology (2000) 25, 104–108.

Keywords: acetaldehyde; detoxification; lignocellulose hydrolyzates; Saccharomyces cerevisiae; inhibition; furfural 

Copyright information

© Society for Industrial Microbiology 2000

Authors and Affiliations

  • A R Barber
    • 1
  • H Hansson
    • 1
  • N B Pamment
    • 1
  1. 1.Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3052, AustraliaAU

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