Production of non-alcoholic beer via cold contact fermentation with Torulaspora delbrueckii

Jarkko Nikulin (Corresponding Author), Heikki Aisala, Brian Gibson

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Use of non-conventional yeasts are increasingly seen as a option for the production of low and alcohol-free beers. In this study, the application of four non-conventional yeasts - Kazachstania servazzii, Kluyevoromyces marxianus, Pichia fermentans and Torulaspora delbrueckii, originally isolated from sourdough cultures, for cold contact fermentations was assessed by screening their ability to reduce wort aldehydes at a fermentation temperature of 1.0 ± 0.5°C. Of the evaluated yeasts, Torulaspora delbrueckii was found to be most promising, being capable of the removal of wort-derived aldehyde off-flavours, while being sufficiently sensitive to low temperatures to limit the formation of ethanol. Despite the different alcohol by volume (0.07% vs. 0.28%), the beers produced via cold contact fermentation at 10L scale with T. delbrueckii and a reference lager yeast strain were similar, with no major differences found after sensory analysis. The results suggest that T. delbrueckii could be used in cold contact fermentation to produce non-alcoholic beers with alcohol content at, or close to, 0%.

Original languageEnglish
Pages (from-to)28-35
Number of pages8
JournalJournal of the Institute of Brewing
Volume128
Issue number1
DOIs
Publication statusPublished - 2022
MoE publication typeA1 Journal article-refereed

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