Hypochromic Effect of an Aqueous Monoglucosyl Rutin Solution Caused by Green Tea Catechins

概要

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Eight catechins reduced the color of a monoglucosyl rutin solution, the gallate-type catechins having a greater effect than the non-gallate-type catechins. Each catechin formed a 1:1 complex with monoglucosyl rutin. The binding constants of the gallate-type catechins were larger than those of the non-gallate type. These results indicate that the degree of color change in the monoglucosyl rutin solution depended on the ability of each catechin to form a complex with monoglucosyl rutin.