1.Extend the shelf life of fruit juice 2.Safety,no harm 3.Inhibit the growth of Gram+&Gram- bacteria, yeasts, ... molds and virus Epsilon Poly l lysine IntroductionCAS No.: 28211-04-3ε-polylysine is a naturally produced, cationic homopolymer ... > As a good preservative, ε-PL is characterized as being high safety, water-soluble, stable at high temperatures, widely usage, non prejudice ...