Fragrant composite microbial preparation for rapid fermentation of tobacco leaves and application of perfumed composite microbial preparation

The present invention discloses a fragrant composite microbial preparation for rapid fermentation of tobacco leaves. The fragrant composite microbial preparation comprises bacillus subtilis Y1, bacillus subtilis X7 and bacillus subtilis X8 in a mass ratio of (0.001-1) :(0.001-1) :(0.001-1), wherein the three kinds of bacillus subtilis are preserved in CGMCC (China General Microbiological Culture Collection Center) with preservation numbers of CGMCC No. 13602, CGMCC No. 13603 and CGMCC No. 13604. The invention further discloses an application of the composite microbial preparation in fermentation of tobacco leaf raw materials. The tobacco leaf raw materials are sliced, subjected to resurgence treatment and shredded; the fragrant composite microbial preparation is sprayed to the surface of shredded tobacco, aAnd the tobacco is fermented at constant temperature and humidity and dried. The fragrant composite microbial preparation can significantly improve the quality and sensory quality of single-grade raw tobacc