The yeast vacuole - A scanning electron microscopy study during high gravity wort fermentations

Patricia L. Pratt, James H. Bryce, Graham G. Stewart

    Research output: Contribution to journalArticle

    Abstract

    The yeast vacuole has been shown to exhibit morphological responses to environmental conditions when exposed to worts of different gravity during fermentation, Marked effects of high gravity wort (20° Plato) on yeast morphology compared to more conventional wort gravity (12° Plato) were observed. High gravity worts caused vacuolar enlargement compared to conventional gravity wort. These results suggested that yeast cells experienced severe alterations with the vacuolar tonoplast when exposed to high osmotic pressure and elevated levels of ethanol. © 2007 The Institute of Brewing & Distilling.

    Original languageEnglish
    Pages (from-to)55-60
    Number of pages6
    JournalJournal of the Institute of Brewing
    Volume113
    Issue number1
    Publication statusPublished - 2007

    Keywords

    • Ethanol
    • High gravity wort
    • Morphology
    • Osmotic pressure
    • Vacuole
    • Yeast stress

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