Journal
JOURNAL OF THE INSTITUTE OF BREWING
Volume 124, Issue 4, Pages 389-402Publisher
INST BREWING
DOI: 10.1002/jib.512
Keywords
aroma; Galactomyces; fermentation; non-conventional; ethyl butanoate
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Funding
- Marie Curie Initial Training Network CORNUCOPIA (FP7-PEOPLE-2010-ITN) [264717]
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Non-Saccharomyces yeasts were evaluated for their fermentation properties and the production of pleasant fruity aromas in three industrial media (beer, wine and cider). A total of 99 yeasts were screened for aroma production using a simple olfactory plate assay. Of these, 21 yeasts were further evaluated for their aroma profile and fermentation capacity using wort, grape and apple juice. The most promising yeasts were Galactomyces geotrichum (three strains), Kazachstania zonata, Kluyveromyces lactic, Lindnera meyerae, Pichia kluyveri, Starmera caribae, Yarrowia lipolytica and Saccharomycodes ludwigii. This study confirms the potential of non-conventional yeasts to produce pleasant aroma compounds under relevant fermentation conditions. In general, differences in the medium composition had less impact on the overall aroma profile than the choice of yeast. This study is the first to simultaneously evaluate multiple non-conventional yeasts in three different industrial media. The results reported here are a good starting point for the development of novel fermented beverages. (C) 2018 Carlsberg. Journal of the institute of Brewing published by John Wiley & Sons Ltd on behalf of The Institute of Brewing & Distilling
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