... highly efficient, safe, and has no side-effects. Poly-L-lysine (ε-poly-L-lysine, EPL) is a small natural homopolymer of the essential amino ... not affected by PH, and stable when heated (120°C for 20min). Therefore, it can be sterilized along with the ... other food preservatives, can attain better effect. ITEMSTANDARDDescriptionPale yellow powderε-Polylysine Purity(ε-PL.HCL)≥95%(ε-PL)≥80%Loss on drying ...