Co-cultivation of non-conventional yeast with Saccharomyces cerevisiae to increase the aroma complexity of fermented beverages

Promotie

Co-cultivation of non-conventional yeast with Saccharomyces cerevisiae to increase the aroma complexity of fermented beverages

Promovendus ms. IMH (Irma) van Rijswijck MSc
Promotor prof.dr. EJ (Eddy) Smid
prof.dr. T (Tjakko) Abee
Organisatie Wageningen University, Food Microbiology Laboratory
Datum

vr 8 september 2017 13:30 tot 15:00

Locatie Auditorium, building number 362
Generaal Foulkesweg 1
362
6703 BG Wageningen
0317-483592

Short summary

Low-alcohol beverages and alcohol-free beers are more trending than ever before. Conventionally, brewers’ yeast is used as pure culture to convert the wort sugars into alcohol, carbon dioxide and flavors. In her research project, Irma van Rijswijck investigated the potential of non-conventional yeast species using various inoculation strategies. These non-conventional yeast species poorly convert the wort sugars into alcohol but produce abundant flavor compounds. Co-cultivation of non-conventional yeast species with the conventional brewers’ yeast was demonstrated to be a successful and novel strategy to obtain low alcoholic beverages with an aroma profile that is enriched with fruity flavors. By varying the ratio of yeasts in such co-cultivations, the final product composition and sensory characteristics can be further fine-tuned to consumer preferences.