PROBLEM TO BE SOLVED: To provide a method for producing a purified green tea extract, by which the purified green tea extract reduced in impurities such as caffeine, having reduced bitter taste, sour taste, thickness, nitrogen content, and hue, and containing non-polymer catechin compounds in a high concentration can be produced.SOLUTION: This method for producing the purified green tea extract comprises making a synthetic adsorbent to adsorb a green tea extract, contacting the synthetic adsorbent with a basic aqueous solution, washing the synthetic adsorbent, contacting the washed synthetic adsorbent with an organic solvent aqueous solution, and then recovering the eluted non-polymer catechin compounds.COPYRIGHT: (C)2009,JPO&INPIT【課題】カフェイン等の夾雑物が除去され、苦味、酸味、とろみ及び窒素含有量が低減され、かつ色相の低減化した、高濃度の非重合体カテキン類を含有する精製緑茶抽出物の製造方法を提供すること。【解決手段】緑茶抽出物を合成吸着剤に吸着させ、当該合成吸着剤に塩基性水溶液を接触させ、当該合成吸着剤を洗浄し、有機溶媒水溶液を接触させて、溶出させた非重合体カテキン類を回収させる、精製緑茶抽出物の製造法。【選択図】なし
