The contribution of glutathione to the destabilizing effect of yeast on wheat dough

C. Verheyen, A. Albrecht, J. Herrmann, M. Strobl, M. Jekle, T. Becker

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Any factor which impairs the development of the gluten network affects the gas retention capacity and the overall baking performance. This study aimed to examine why rising yeast concentrations (Saccharomyces cerevisiae) decrease the dough elasticity in an asymptotic manner. Since in 27 commercial fresh and dry yeasts up to 81 mg glutathione (GSH) per 1 g dry sample were found. Through the addition of reduced GSH in dough without yeast, the extent of dough weakening was analysed. Indeed rheological measurements confirmed that yeast-equivalent levels of GSH had a softening effect and during 3 h fermentation the weakening coefficient increased from 0.3% to 20.4% in a Rheofermentometer. The present results indicate that free -SH compounds, as represented by GSH, considerably contribute to the softening of dough through dead yeast cells.

Original languageEnglish
Pages (from-to)243-249
Number of pages7
JournalFood Chemistry
Volume173
DOIs
StatePublished - 2014

Keywords

  • Chemical leavening
  • Dough weakening
  • Oscillatory test
  • Rheofermentometer
  • Rheology
  • S. Cerevisiae

Fingerprint

Dive into the research topics of 'The contribution of glutathione to the destabilizing effect of yeast on wheat dough'. Together they form a unique fingerprint.

Cite this