Patent ID: 7468265

Claim:
A method for stabilizing an enzyme selected from the group consisting of peroxidase, alkaline phosphatase, β-galactosidase, acetylcholine esterase, and glucose oxidase, which is in a complex with at least one of the specific-binding-pair-forming substances selected from the group consisting of an antibody, an antigen, biotin, avidin, streptoavidin, lectin, cytokine, chemokine, and hyaluronic acid, endotoxin, β-glucan, to form an enzyme complex wherein the method comprises bringing a stabilizing agent into coexist with the enzyme complex and wherein the stabilizing agent comprises a hydrolyzate of plant-derived polypeptide as an active ingredient selected from the group consisting of a soybean protein hydrolyzate, a wheat protein hydrolyzate, a potato protein hydrolyzate, a corn protein hydrolyzate, and rice bran protein hydrolyzate, wherein said enzyme is stabilized.