Biotechnology Letters

, Volume 19, Issue 12, pp 1201–1203 | Cite as

Trehalose metabolism in Saccharomyces cerevisiae during alcoholic fermentation

  • J.J. Mansure
  • R.C. Souza
  • A.D. Panek
Article

Abstract

Strains of Saccharomyces cerevisiae accumulated intracellular trehalose up to 105 mg/g cell dry wt with 90% survival. Viability could be correlated to trehalose levels during ethanol fermentation albeit the disaccharide did not seem to contribute to fermentation yields. Trehalose-6-phosphate synthase showed high activity (up to 279 mu/mg protein) even at high residual sucrose concentration (115 g/l) in the wort suggesting to be a response of yeast cells to the osmotic stress conditions.

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Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • J.J. Mansure
    • 1
  • R.C. Souza
    • 2
  • A.D. Panek
    • 2
  1. 1.Instituto de Ciencias Biol-gicas e AmbientaisUniversidade Santa òrsula (USU)Rio de JaneiroBrazil
  2. 2.Departamento de Bioqu'mica, Instituto de Qu'micaUniversidade Federal do Rio de Janeiro (UFRJ)Rio de JaneiroBrazil

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