Nisin

Nisin, also known as nisin or nisin, is a polypeptide produced by Streptococcus lactis. It is composed of 34 amino acid residues and has a molecular weight of about 3500 da. Because nisin can inhibit most Gram-positive bacteria and strongly inhibit the spores of Bacillus, it is widely used in the food industry as a food preservative. Physiological pH conditions in human body after consumption and α— Under the action of chymotrypsin, it will quickly hydrolyze into amino acids, which will not change the normal flora in human intestine and produce resistance problems such as other antibiotics, nor cross resistance with other antibiotics. It is an efficient, non-toxic, safe and no side effects natural food preservative.