Research Progress on the Bacteriostatic Mechanism of Nisin and Its Application in Food Preservation

Nisin is a natural biological preservative synthesized in the metabolic process of some strains of Lactococcus lactis subspecies lactis. Nisin has good bacteriostasis and can effectively inhibit the growth of gram-positive bacteria(Staphylococcus aureus,Bacillus subtilis,Listeria and Micrococcus,etc),especially bacterial spores. And is widely used in the field of fresh-keeping of food because it can be quickly digested and decomposed into various amino acids by protease in the human body after being ingested without toxic effect on the human body. This article mainly reviews the antibacterial mechanism of nisin and its application in the field of food preservation in the past 10 years. It focuses on the application of nisin in the preservation of fruits and vegetables,and finally analyzes the future development direction of nisin,which provides theoretical reference on further research and application of nisin in food preservation.