PROBLEM TO BE SOLVED: To provide a denatured polysaccharide in which a hydroxy aryl group is introduced into a polysaccharide, which facilitates the oxidation coupling efficiency of the hydroxy aryl group and allows the gelation.SOLUTION: The present invention provides a denatured polysaccharide in which (a1) a group having a carbon-carbon unsaturated double bond and (a2) a group having a hydroxy aryl group are introduced into a polysaccharide.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】多糖にヒドロキシアリール基が導入された変性多糖において、ヒドロキシアリール基の酸化カップリングの効率が上がり、ゲル化できる変性多糖を提供する。【解決手段】多糖に、炭素-炭素不飽和二重結合を有する基(a1)、およびヒドロキシアリール基を有する基(a2)が導入された変性多糖。【選択図】なし