PROBLEM TO BE SOLVED: To provide a citral deterioration inhibitor that is excellent in an efficacy of suppressing citral from deteriorating and is used for a citral-containing liquid food, and a liquid food containing the deterioration inhibitor.SOLUTION: A liquid food contains 0.0075 to 15 ppm of citral and contains an extract A obtained by extracting leaves and/or branches of lemon myrtle with water or an organic solvent of which water content is 50% or more by weight, and an extract B obtained by water-solubilizing after extracting a bark and/or branches of a Myrica rubra with an organic solvent, such that P=(X1×Y1)/(X2×Y2) is 0.4 to 55, and Q=[X1×Y1)+(X2×Y2)]/100 is 7 to 3600. (X1: an amount (parts by weight) of the extract A to 100 parts by weight of the citral in the liquid food, X2: an amount (parts by weight) of the extract B to 100 parts by weight of the citral in the liquid food, Y1: a brix (%) of the extract A, and Y2: a brix (%) of the extract B.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】シトラールの劣化を抑制する効能に優れた、シトラール含有液状食品用のシトラール劣化抑制剤、及び該劣化抑制剤を含む液状食品を提供すること。【解決手段】シトラールを0.0075~15ppm含有し、レモンマートルの葉及び/又は枝を水または含水率が50重量%以上の有機溶媒で抽出した抽出物A、および、ヤマモモ科ヤマモモ属植物の樹皮及び/又は枝を有機溶媒で抽出した後に水溶化した抽出物Bを、P=(X1×Y1)/(X2×Y2)が0.4~55、Q=〔(X1×Y1)+(X2×Y2)〕/100が7~3600となるように含有する液状食品。(X1:液状食品中のシトラール100重量部に対する抽出物Aの量(重量部)、X2:液状食品中のシトラール100重量部に対する抽出物Bの量(重量部)、Y1:抽出物AのBrix(%)、Y2:抽出物BのBrix(%))【選択図】なし
