PROBLEM TO BE SOLVED: To provide a method for producing a non-polymer catechin compound-containing purified green tea extract which is low in the content of a bitter astringent ingredient, non-polymer catechin compound gallates, and in which bitter taste, sour taste and pungent taste are controlled.SOLUTION: Provided is the method for producing the non-polymer catechin compound-containing purified green tea extract, characterized by treating a green tea extract or its concentrate by processes including (A) a process for treating with tannase, (B) a process for treating an anion exchange resin, and (C1) a process for contacting with activated carbon and acid white clay and/or (C2) a process for contacting with a synthetic adsorbent.COPYRIGHT: (C)2010,JPO&INPIT【課題】苦渋味成分である非重合体カテキン類のガレート体の含有率の低く、かつ苦味、酸味及びエグ味が抑制された非重合体カテキン類含有精製緑茶抽出物の製造方法を提供すること。【解決手段】緑茶抽出物又はその濃縮物を(A)タンナーゼで処理する工程と、(B)陰イオン交換樹脂で処理する工程と、(C1)活性炭及び酸性白土と接触させる工程、及び/又は(C2)合成吸着剤と接触させる工程とを含む工程により処理する非重合体カテキン類含有精製緑茶抽出物の製造方法。【選択図】なし
