The common brewer’s yeast (Saccharomyces cerevisiae) is traditionally used for industrial ethanol production. Surprisingly, researches in both Sweden and Brazil have independently of each other uncovered another yeast (Brettanomyces/Dekkera bruxellensis) as the dominant ethanol-producing microbe in industrial ethanol plants, where it had completely replaced the initial inoculum of Saccharomyces cerevisiae. Notably, efficiency of this industrial ethanol production mediated by D. bruxellensis was stably high.Therefore, the yeast D. bruxellensis should perhaps no longer be regarded as an infection but rather as alternative ethanol production organism.
What enables D. bruxellensis to outcompete S. cerevisiae at ethanol plants - this question became the focus of my extensive research effort.
Tiukova, I. A (2014) Dekkera bruxellensis, a non-conventional ethanol production yeast: studies on physiology, transcriptomics and interactions with industrial microbial isolates. Diss. Uppsala: Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2014:40; ISBN 978-91-576-8028-0; eISBN 978-91-576-8029-7