PROBLEM TO BE SOLVED: To provide a bitter taste inhibitor and a bitter taste inhibiting method which can effectively inhibit the bitter taste attributed to a high concentration of Acesulfame K.SOLUTION: The present invention provides a bitter taste inhibitor containing uronic acid glycoside of a flavonoid such as baicalin, wogonoside, and scutellarin, as an active ingredient and a bitter taste inhibiting method characterized by compounding the uronic acid glycoside of a flavonoid, such as baicalin, wogonoside, and scutellarin, into a food or drink.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】高濃度のアセスルファムKに起因する苦味を効果的に抑制できる苦味抑制剤および苦味抑制方法を提供すること。【解決手段】バイカリン、ワゴノシド、スクテラリン等のフラボノイドのウロン酸配糖体を有効成分として含有する苦味抑制剤。バイカリン、ワゴノシド、スクテラリン等のフラボノイドのウロン酸配糖体を飲食品に配合することを特徴とする苦味抑制方法。【選択図】なし