The present invention belongs to the technical field of
fermentation engineering, and specifically discloses a strain of Moutai slow-growing Bacillus (Lentibacillus maotaii) JN110522, which is stored in the General Microbiological Center of China
Microbiological Culture Collection Administration Committee, with a preservation date of June 29, 2022, and a preservation number of CGMCC No.25214. The strain can simultaneously metabolize and produce high levels of 2,3,5,6-
tetramethylpyrazine and 2,3,5-trimethylpyrazine, and the output of 2,3,5,6-
tetramethylpyrazine can reach 26.2±0.8mg / L, and the content of 2,3,5-trimethylpyrazine can reach 4.1±0.4mg / L. The present invention also discloses that the strain is applied to the compression stage of high-temperature Daqu
fermentation process, which can greatly increase the content of 2,3,5,6-
tetramethylpyrazine and 2,3,5-trimethylpyrazine in high-temperature Daqu, so that the sauce-flavored
flavor of high-temperature Daqu is better prominent, and can be used to prepare high-performance Daqu. The total yield of
pyrazine compounds, 2,3,5,6-tetramethylpyrazine and 2,3,5-trimethylpyrazine of the fortified qu fermented by this bacterium is 1 times higher than that of ordinary Maotai slow-growing Bacillus fortified qu, and the application value is very high.