Biotechnology Letters

, Volume 19, Issue 12, pp 1201–1203

Trehalose metabolism in Saccharomyces cerevisiae during alcoholic fermentation

Authors

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

DOI: 10.1023/A:1018433820097

Cite this article as:
Mansure, J., Souza, R. & Panek, A. Biotechnology Letters (1997) 19: 1201. doi:10.1023/A:1018433820097

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.

Copyright information

© Chapman and Hall 1997