Y297 Saccharomyces cerevisiae Y297 with adaptability at low temperature and manufacturing method of fermented alchoholic beverage using the same

摘要

The present invention relates to a novel Saccharomyces cerevisiae strain Y297, deposited as accession number KACC93244P; and a fermented wine produced using the same. According to the present invention, out of 500 varieties of fermentation strains, the yeast showing good growth under low temperature conditions at 15C, Saccharomyces cerevisiae strain Y297 was selected; it was confirmed that the strain has excellent low-temperature resistance and alcohol productivity; and by comparing enzyme productivities related to the production of aromatic components of yeast, it was also confirmed that glucosidase and esterase activities of the Y297 strain are 2-5 times higher than commercial yeasts. Additionally, the result of assessing quality characteristics of fermented wines has confirmed that when the Y297 strain is used, the fermented wine has lower acidity, higher alcohol contents, higher organic acid contents, and higher contents of free amino acids compared to when commercial yeasts are used. Accordingly, the low temperature-adaptable Y297 yeast of the present invention may be beneficially used in the production of high-quality fermented wine having excellent palatability, sweetness and fragrance.