The influence of media composition on replicative lifespan in lager brewing yeast

Dawn Louise Maskell, Alan I. Kennedy, Jeff A. Hodgson, Katherine A. Smart

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.
Original languageEnglish
Title of host publicationBrewing Yeast Fermentation Performance
EditorsKatherine Smart
Place of PublicationOxford
PublisherBlackwell Science
Number of pages8
ISBN (Print)9780632054510
Publication statusPublished - 2000


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