Wine yeast with low yield of hydrogen sulfide and ethyl carbamate and its screening method and application

Fecha de publicación: 09/09/2021
Fuente: WIPO Wine
The invention discloses wine yeast with low yield of hydrogen sulfide (H2S) and ethyl carbamate (EC) and screening method and application. The name of the strain is Saccharomyces cerevisiae CEC LFN524, which has been preserved in the China General Microbiological Culture Collection Center (CGMCC) with the preservation number of CGMCC NO.4299 and the preservation date of November 5th, 2010. The strain was isolated and screened from the natural fermentation process of small seedless white grapes in Loulan Winery of Xinjiang, China. WLN (Wallerstein Laboratory Nutrient) culture medium was used to separate and purify the strains. The strain with low H2S production was screened by lead acetate test paper method and re-screened by H2S detection tube method, and the content of H2S and EC in the fermentation liquor was detected. Finally, the strain ware screened and obtained, and can be used in the wine making industry.