The invention discloses a method for improving flower and
fruit flavor of Baijiu. According to the method, pure glutinous
sorghum of which the
amylopectin content is greater than or equal to 70% is used as a unique
fermentation raw material, and a pure grain
solid-state
fermentation process without adding matching grains is adopted; the method comprises the following steps: preparing four specific preserved strains into a
solid microbial inoculum, preparing a compound microbial inoculum according to a weight ratio of (2-4): (2-4): (1-2): (1-2), mixing the compound microbial inoculum with
yeast without exogenous functional microbial inoculum addition according to a ratio of (4-8): (1-2), and adding 0.1% of food-grade
silicon dioxide to prepare enhanced distiller's
yeast which accounts for 1-2% of the
dry weight of pure glutinous
sorghum; the
fermentation temperature is controlled to be 20-24 DEG C, the period is 14 days, and the
temperature control precision is + / -0.5 DEG C. Flower and
fruit flavor esters can be synergistically and remarkably improved, the contents of
ethyl acetate,
isoamyl acetate and
phenethyl acetate are respectively improved by more than or equal to 68%, more than or equal to 50% and more than or equal to 97%, n-propyl
alcohol and fusel oil are respectively reduced by more than or equal to 52% and more than or equal to 11%, the
wine rate is more than or equal to 62%, meanwhile, the typical style of a baijiu main body is completely reserved, and the method is particularly suitable for the glutinous and elegant composite
aroma characteristic of glutinous baijiu. The method is standardized in process, high in
repeatability, good in industrial adaptability and easy to popularize and apply on a large scale.