ε-Polylysine hydrochloride is a naturally occurring polymer composed of L-lysine residues linked by peptide bonds. It is produced by microbial fermentation and is commonly used as a food preservative due to its strong antimicrobial properties.

ε-Polylysine hydrochloride is highly effective against a broad spectrum of bacteria, yeast, and molds, and has been approved as a food additive by the US Food and Drug Administration (FDA). It is considered safe for consumption and is used in various food products, including meat, poultry, seafood, and dairy products.

Apart from its use as a food preservative, ε-polylysine hydrochloride has also been investigated for its potential as an antimicrobial agent in various applications, including medical and cosmetic formulations. It has been shown to have strong antibacterial activity against both Gram-positive and Gram-negative bacteria, and its use has been explored in wound dressings, medical devices, and personal care products.

Overall, ε-polylysine hydrochloride is a versatile and effective antimicrobial agent that has a wide range of potential applications in various fields.

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