Using Daqu as a saccharification-fermentation agent is one of the main technological characteristics of traditional Chinese liquor. The microbial components in Daqu were rich, including various types of mold, yeast and bacteria. These complex microbial systems provided necessary microorganisms, enzymes and flavor substances for the fermentation of liquor. As an essential microorganism in all alcoholic fermentation, yeast also played an important role in the production of Daqu. To explore the functional micr...