Genetic improvement of non-conventional Torulaspora delbrueckii for traditional sparkling winemaking by mixing for eventual hybridization with Saccharomyces cerevisiae.

ABSTRACT: Non-conventional yeasts such as Torulaspora delbrueckii (Td) have been proposed for sparkling winemaking. Unfortunately, this yeast has poor efficiency in completing wine fermentation as compared to Saccharomyces cerevisiae (Sc). New mutants with increased resistance to SO₂, ethanol, and high CO₂ pressure were previously isolated from spore clones of Td. Although these mutants showed improved capability for base wine fermentation, there is still room for genetic improvement of Td yeasts until the fermentative capacity of Sc is achieved. As an alternative approach, yeast mixture for eventual hybridization of Td with Sc was assayed in this study. The new yeast mixture clones (Sc-mixed Td) showe

SUBMITTER: Martinez A 

PROVIDER: S-EPMC9583163 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature