Sell Polylysine

Description

Introduction:
ε-Polylysine, a kind of peptide with a linkage between a－carboxyl group and e－amino group, is a natural substance from microbial metabolism. It has lots of advantages over traditional preservatives, such as high safety good heat tolerance and solubility in water and extensive antimicrobial against Gram+, Gram- bacteria and fungi. Now it has been applied extensively in food and pharmaceutical industry for the wide range of antimicrobial spectrum.

Physical properties:
ε-Polylysine is the polymer of L-lysine. It is slightly bitter, hygroscopic, light yellow power. It is soluble in water, slightly soluble in ethanol. The **-unit homopolymer has a molecular weight of ***0 and an empirical formula of C**0H**2N*0O*1. It is still stable when heated (**0℃，*0min or **0℃,*0min). It inhibits the thermophilics. So it is also applied to high temperature process. The activity of ε-Polylysine decreases at the presence of acidic polysaccharide, chloride, phosphate, and Cu2+ while its activity increases with presence of hydrochloric acid, citric acid, malic acid, glycine and glyceride.

Molecular formular:



Safety:
ε-Polylysine is recognized as a very safe substance in the scientific community. ε-Polylysine was generally recognized as safe as food preservative by FDA in October, ***3.It had been approved by FDA for use as an antimicrobial agent in cooked rice or sushi rice at levels up to *0 milligrams per kilogram (mg/kg) of rice. The results of an acute toxicity study and bacterial assays for mutagenicity shows that ε-Polylysine was non-toxic and there was no evidence for mutagenic activity of ε-Polylysine. So ε-Polylysine is absolutely safe to be used as food preservative.

Quality Standard:
FAO/WHO， ***2