Benefits of enzymatic pre-treatment of intact yeast cells for anaerobic digestion of distillery pot ale

P. Mallick*, J. C. Akunna, G. M. Walker

*Corresponding author for this work

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


    Potential benefits for anaerobic digestion processes of hydrolysing intact yeast cells in malt whisky distillery pot ale were investigated. Several yeast lytic enzymes, that can dissolve glucan and mannoprotein components of the cell wall, were effective. For example, anaerobic digestion of pot ale pre-treated with yeast lytic enzymes showed COD reductions of 87%, compared with only 13% without enzymes. It was therefore established that pre-hydrolysis of intact yeast cells in distillery pot ale was very beneficial for efficient anaerobic treatment of such residues for biogas production.

    Original languageEnglish
    Title of host publicationDistilled spirits
    Subtitle of host publicationnew horizons: energy, environmental and enlightenment: proceedings of the Worldwide Distilled Spirits Conference
    EditorsGraeme M. Walker, P.S. Hughes
    Place of PublicationNottingham
    PublisherNottingham University Press
    Number of pages5
    ISBN (Electronic)9781907284830
    ISBN (Print)9781907284458
    Publication statusPublished - 2010
    Event3rd Worldwide Distilled Spirits Conference - Edinburgh, United Kingdom
    Duration: 1 Sep 20081 Sep 2008
    Conference number: 3


    Conference3rd Worldwide Distilled Spirits Conference
    Abbreviated titleWDSC
    Country/TerritoryUnited Kingdom

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