Patent ID: 6315988
Filing Date: 2001-11-13
Classification: A23L,A61K,A61Q,C07K,C12P

Abstract:
A process for preparing protein-bound melanin and/or peptide-bound melanin, which is soluble in an aqueous solution at pH 2 to 11 and temperature 0.degree. C. to 50.degree. C., comprising reaction of dihydroxyphenylalanine or tyrosine with an oxidant enzyme in an acidic medium in the presence of a protein and/or peptide having a pl of 3-6 and a molecular weight of at least 45,000 Da wherein dihydroxyphenylalanine or tyrosine to oxidant enzyme to the protein and/or peptide in the acidic medium is present in a molar ratio of 1-5:0.0001-0.001:0.01-0.2.