Compound leavening agent containing lactobacillus plantarum Y44 and fermented compound milk thereof

The invention discloses a compound leavening agent containing lactobacillus plantarum Y44, compound milk and application, and belongs to the technical field of microorganisms. According to the application of the lactobacillus plantarum Y44 serving as the leavening agent, the lactobacillus plantarum Y44 is preserved in the China Center for Type Culture Collection (CCTCC) on August 21, 2018, and the preservation number of the strain is CCTCC NO: M 2018558. According to the skimmed milk and soybean milk compounded fermented milk provided by the invention, the ratio of soybean milk to skimmed milk is 2: 8 through sensory evaluation of multiple persons, and the ratio has relatively good physicochemical properties and ACE inhibition rate, the whole taste is relatively good, and besides the traditional milk flavor, the fermented milk also has unique soybean flavor and special flavor substances. When the compounding ratio is 2: 8, the overall physical characterization is relatively good, multiple indexes are relative