Microorganism composite zymocyte agent as well as preparation method and application thereof

The invention relates to a microorganism composite zymocyte agent as well as a preparation method and an application thereof. The invention is characterized in that the active components of the composite zymocyte agent are Cida tropicalis and lactococcus lactis which are mixed according to the mass ratio of (0.5-2): 1. The preparation process comprises the following steps: carrying out oblique plane strain culture on the Cida tropicalis and lactococcus lactis; then carrying out liquid seed amplification culture to obtain a Cida tropicalis liquid and a lactococcus lactis liquid; mixing the Cida tropicalis liquid and lactococcus lactis liquid according to the mass ratio of (0.5-2): 1 and inoculating the mixture into a solid amplification culture medium to obtain the composite zymocyte agent according to the inoculum size of 4-5%(w/v); and adding the composite zymocyte agent to kitchen waste for microbial fermentation. The invention has the advantages of suppressing growth of putrefying bacteria in the kitchen waste and reproduction of pathogenic microorganism, thus featuring good freshness-retaining effect and organoleptic quality while increasing protein content and beneficial flora content of the kitchen waste.