Patent ID: 8268017
Filing Date: 2012-09-18
Classification: C09B,C12Q

Abstract:
1. A method of suppressing nonspecific color development in a reaction liquid, the method comprising combining a dye mixture comprising with hydrogen peroxide and peroxidase, wherein the molar ratio of the different dye to the leuco dye is at least 0.8:1 and no greater than 41.7:1, and wherein the mixture of the different dye with the leuco dye suppresses nonspecific color development in the reaction liquid; wherein the leuco dye comprises 10-(carboxymethylaminocarbonyl)-3,7-bis(dimethylamino)phenothiazine sodium or N,N,N′,N′,N″,N″-hexa(3-sulfopropyl)-4,4′,4″-triaminotriphenylmethane.6 sodium; and wherein the different dye is selected from the group consisting of Orange G, Food Red No. 2, Food Red No. 40, Food Red No. 102 and Food Yellow No. 4.