Changes in the gas atmosphere during industrial scale malting

Annika Wilhelmson, Arja Laitila, Jussi Heikkilä, Jaakko Räsänen, Erja Kotaviita, Juhani Olkku, Silja Home

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


    The malting process is a complex system involving two major groups of metabolically active organisms: the barley grains and the diverse microbial population naturally colonising barley. To create a tool for process development and optimisation, FTIR and gas chromatography were applied to detect volatile metabolites produced during industrial scale malting processes. The changes in microbial populations were also monitored. The main volatiles observed during the malting process were carbon dioxide, ethanol and acetaldehyde. Steeping rapidly activated the microbial population colonising the grain. A numerous and diverse yeast population was noticed in the various stages of industrial malting.
    Original languageEnglish
    Title of host publicationProceedings of the 29th EBC Congress, Dublin 2003
    PublisherFachverlag Hans Carl
    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


    Conference29th European Brewery Convention EBC Congress 2003


    • acetaldehyde
    • carbon dioxide
    • ethanol
    • malting
    • metabolism
    • microflora


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