COMPLEX OF AMINO ACID POLYCONDENSATE CONTAINED IN SEASHELL AND METAL COMPOUND, METHOD FOR MANUFACTURING THE SAME AND USAGE OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a useful coloring agent by effectively using seashells, which are industrial wastes. SOLUTION: A coloring agent containing a complex of a seashell protein and a metal compound, which complex has been produced by using the seashell protein and the metal compound as raw materials.