The application discloses a
plant lactobacillus strain and application thereof, and belongs to the technical field of microorganisms. The preservation number of the strain is CGMCC No. 33864. The strain has good tolerance to gastrointestinal juice and bile salts and has no hemolytic activity. Concentrated
cell-free supernatant prepared from the strain can inhibit
salmonella, including inhibiting the growth of
salmonella, killing
bacteria, inhibiting or removing
biofilm. Animal experiments show that the strain and the concentrated
cell-free supernatant thereof can prevent
salmonella infection, alleviate
weight loss caused by infection, maintain intestinal
barrier integrity, reduce the level of pro-
inflammatory factors, alleviate
tissue damage, improve the expression of colon
tight junction proteins and
mucin, promote the generation of short-chain fatty acids, and restore the intestinal
flora structure. The application further provides a microbial preparation containing the strain and / or the concentrated
cell-free supernatant thereof. The strain and the microbial preparation can be used for preparing products for resisting salmonella, preventing
salmonella infection or improving intestinal health.