polylysine

Polylysine is a polymer of the amino acid lysine. It can be synthesized chemically or produced biologically by microorganisms. There are several forms of polylysine, most notably alpha-polylysine and epsilon-polylysine. Alpha-polylysine is a synthetic polymer and is not naturally occurring. Epsilon-polylysine, on the other hand, is a natural antimicrobial peptide produced by certain bacteria, such as strains of Streptomyces.

Epsilon-polylysine has gained attention for its antimicrobial properties. It functions by disrupting the cell membranes of bacteria, leading to cell death. This antimicrobial activity makes it a subject of interest for food preservation and pharmaceutical applications. It is considered safe for consumption and has been approved for use as a food additive in some countries. Its natural origin and biodegradability contribute to its appeal as an alternative to synthetic preservatives. Research continues into optimizing its production and expanding its applications.