PROBLEM TO BE SOLVED: To provide a catechin-containing dentifrice composition that hardly suffers from discoloration after long-term preservation.SOLUTION: The dentifrice composition comprises a hydrogel particle comprising the following components (A), (B), (C), (D) and (E): (A) a catechin (B) a water-soluble polymer forming a water-insoluble complex with a catechin (C) ascorbic acid or a salt thereof (D) a gel-forming agent and (E) water, with the weight ratio (C/A) of the component (C) to the component (A) of 0.05-2.0.COPYRIGHT: (C)2011,JPO&INPIT【課題】長期間保存しても変色の少ないカテキン類含有歯磨組成物の提供。【解決手段】次の成分(A)、(B)、(C)、(D)及び(E):(A)カテキン類(B)カテキン類と水不溶性の複合体を形成する水溶性ポリマー(C)アスコルビン酸又はその塩(D)ゲル形成剤(E)水を含み、成分(C)と成分(A)の重量比(C/A)が0.05~2.0であるハイドロゲル粒子を含有する歯磨組成物。【選択図】なし
