PROBLEM TO BE SOLVED: To provide a purified green tea extract good in the elimination of an aftertaste.SOLUTION: The purified tea extract includes the following ingredients (A), (B), and (C): (A) a non-polymer catechin compound, (B) caffeine, and (C) at least one of flavonol glycosides represented by general formula (1), wherein the content mass ratio [(B)/(A)] of the ingredient (A) to the ingredient (B) is not more than 0.02. In the formula, R1 to R7 are each independently H, OH, or methoxy Ra is &beta-glucosyl or &beta-rhamnosyl Rb is &alpha-rhamnosyl or H Rc is &alpha-glucosyl n is an integer of 0 to 10.COPYRIGHT: (C)2010,JPO&INPIT【課題】後味のキレの良い精製緑茶抽出物を提供すること。【解決手段】次の成分(A)、(B)及び(C):(A)非重合体カテキン類、(B)カフェイン、及び(C)下記一般式(1)で表されるフラボノール配糖体の少なくとも1種を含有し、成分(A)と成分(B)との含有質量比[(B)/(A)]が0.02以下である、精製茶抽出物。(式中、R1~R7はそれぞれ独立に水素原子、水酸基又はメトキシ基を示し、Raはβ-グルコシル基又はβ-ラムノシル基を示し、Rbはα-ラムノシル基又は水素原子を示し、Rcはα-グルコシル基を示し、nは0~10の整数を示す。)【選択図】なし
