Polylysine (PLL) has a broad antibacterial spectrum and has broad application prospects in the field of food processing.

Polylysine (PLL), also known as poly-L-lysine hydrogen bromide, is polymerized from 25 to 30 lysine residues. Its chemical formula is (C6H12N2O2)n.xHBr. It is an organic substance. Polylysine appears as a white freeze-dried powder and has the characteristics of strong water solubility, high safety performance, good thermal stability, and broad antibacterial spectrum. It is widely used…