Abstract
Beer quality is strongly influenced by the biochemical performance of the yeast cell during fermentation. The rate and extent of fermentation and the quality of the final product may be affected by both extrinsic and intrinsic factors. Lager brewing yeast cells exhibit a finite replicative lifespan which is strain dependent with characteristic morphological changes associated with age and senescence.
Lifespan in haploid strains of Saccharomyces cerevisiae has been demonstrated to be affected by media composition. To elucidate the impact of media components on polyploid yeast lifespan, the effect of fermentable carbon source in defined media on longevity of four lager brewing yeast strains has been investigated. It is suggested that media composition may moderate brewing yeast lifespan, though the extent of change is strain dependent.
Lifespan in haploid strains of Saccharomyces cerevisiae has been demonstrated to be affected by media composition. To elucidate the impact of media components on polyploid yeast lifespan, the effect of fermentable carbon source in defined media on longevity of four lager brewing yeast strains has been investigated. It is suggested that media composition may moderate brewing yeast lifespan, though the extent of change is strain dependent.
| Original language | English |
|---|---|
| Title of host publication | Brewing Yeast Fermentation Performance |
| Editors | Katherine Smart |
| Place of Publication | Oxford |
| Publisher | Blackwell Science |
| Pages | 119-126 |
| Number of pages | 8 |
| ISBN (Print) | 9780632054510 |
| Publication status | Published - 2000 |