The free and carrier-bound yeast populations from a two-stage immobilized yeast reactor are in different physiological conditions

Virve Vidgren, Ilkka Virkajärvi, Laura Ruohonen, Laura Salusjärvi, John Londesborough

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    To better understand the operation of a 2-stage immobilised yeast reactor making beer from wort, different yeast populations from the first stage were analysed. Yeast amounts (mg fresh yeast/g wood chip) were about: free, 10; loosely bound, 78; tightly bound, 40. Proteomics showed that from the 200 most abundant soluble proteins only 19 were present at different levels (up to 12-fold) in free and loosely bound yeast. Maltose permease activity was two-fold greater in free than loosely bound yeast. Other differences will be reported.
    Original languageEnglish
    Title of host publicationProceedings of the 29th EBC Congress, Dublin 2003
    PublisherFachverlag Hans Carl
    Pages609-617
    ISBN (Print)90-70143-22-4
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    Event29th European Brewery Convention EBC Congress 2003 - Dublin, Ireland
    Duration: 17 May 200322 May 2003

    Conference

    Conference29th European Brewery Convention EBC Congress 2003
    CountryIreland
    CityDublin
    Period17/05/0322/05/03

    Keywords

    • enzymic activity
    • immobilized yeast
    • maltose permease
    • physiology
    • yeast analysis

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