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

Abstract

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
Pages226-233
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

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

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