... a small natural homo-polymer (25-30 L-lysine residues) of the essential amino acid, L-lysine so it is high safe for human ... have a synergistic effect when blending with Potassium Sorbate, Citric acid, Malic Acid, Glycine and Nisin.6. Safe for human consumption: after ... human body. It partly breaks down into L-lysine, an essential amino acid for human health. L –lysine is non-toxic, and known as ...