PROBLEM TO BE SOLVED: To provide a method of stabilizing nonpolymeric catechins in which a residual ratio of nonpolymeric catechins is high and the hue change can be suppressed.SOLUTION: A method of stabilizing nonpolymeric catechins includes the step of mixing an aqueous solution containing nonpolymeric catechins with ethanol.COPYRIGHT: (C)2014,JPO&INPIT【課題】非重合体カテキン類の残存率が高く、かつ色相変化の抑制可能な非重合体カテキン類の安定化方法を提供すること。【解決手段】非重合体カテキン類含有水溶液とエタノールとを混合する、非重合体カテキン類の安定化方法。【選択図】なし