To provide a new use for Citrus Yoko, namely, a composition available for pharmaceuticals, food and drink, cosmetic preparations, daily necessaries or the like.SOLUTION: The present invention provides an antibacterial composition, an intestinal regulation composition, a composition for preventing and/or improving periodontitis and/or oral malodor, a composition for preventing and/or improving diabetes, and a food composition, containing Citrus Yoko fruit juice, pericarp, pericarp extract or fruit juice squeezed lees extract, as an active ingredient.SELECTED DRAWING: None【課題】ユコウ（柚香：Ｃｉｔｒｕｓ Ｙｏｋｏ）の新たな用途、すなわち医薬品、飲食品、化粧品、日用品などに利用可能な組成物の提供。【解決手段】ユコウの果汁、果皮、果皮抽出物または果汁搾汁滓抽出物を有効成分として含有する、抗菌用組成物、整腸用組成物、歯周病及び／又は口臭の予防及び／又は改善用組成物、糖尿病の予防及び／又は改善用組成物、並びに食品組成物。【選択図】なし
