Natural Preservative--Epsilon Polylysine
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Natural Preservative--Polylysine Description
Polylysine is a natural substance from streptomyces albulus metabolism. It is widely used as food preservative. It can inhibit the growth of Gram-positive and Gram-negative bacteria, yeasts, moulds, bacteria, ect. .
Polylysine is hygroscopic, light yellow power. It is soluble in water, slightly soluble in ethanol, insoluble in organic solvent such as ethyl acetate, ether, ect. . The molecular of -Polylysine is a straight chain polymer of lysine. It can decompose for lysine within the human body, and can be completely digested absorption by the human body, not only doesn't have any poisonous side-effect, but also can be regard as the source of one kind of lyisine.
Polylysine can inhibit the growth of Gram(+) and Gram(-) bacteria, yeast, mould, virus, ect. , especially inhibit the Gram(-) bacteria which can't easily inhibit by other preservatives, such as E. coli, Salmonella, and also can inhibit the thermophilics, such as B, stearothermophilus. Its activity is not affected by PH, and stable when heated (120~C for 20min) . Therefore, it can be sterilized along with the raw material. It is a food preservative which is highly efficient, safe, and has no side-effects.
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