PROBLEM TO BE SOLVED: To provide a method for producing a composition having high antioxidizing activity from bamboo grass and/or bamboo leaves as raw material.SOLUTION: The method comprises the following procedure: From a lower aliphatic alcohol extract liquid from bamboo grass and/or bamboo leaves, the alcohol is evaporated and substituted by water followed by making a liquid/liquid partition with petroleum ether and/or diethyl ether and separating an aqueous layer liquid. Ethyl acetate is added to the aqueous layer liquid to make a liquid/liquid partition followed by separating an ethyl acetate layer liquid and an aqueous layer liquid. Then, the objective antioxidizing composition containing luteolin glycosides having antioxidizing activity such as luteolin 6-C-glucoside and luteolin 6-C-arabinoside and tricine is obtained from the respective aqueous layers, the ethyl acetate layer and/or the diethyl ether layer.COPYRIGHT: (C)2007,JPO&INPIT【課題】ササ及び/又はタケの葉を原料にして優れた抗酸化活性を有する組成物を製造する方法を提供する。【解決手段】ササ及び/又はタケの葉の低級脂肪族アルコール抽出液から、該アルコールを蒸発するとともに水に置換し、石油エーテル及び/又はジエチルエーテルで液・液分配を行わせ、水層の液を取り出し、該水層の液に酢酸エチルを添加して液・液分配を行い、酢酸エチル層の液と水層を採取し、各水層や酢酸エチル層、ジエチルエーテル層からルテオリン6-C-グルコシド、ルテオリン6-C-アラビノシド等の抗酸化活性を有するルテオリン配糖体やトリシン等を含む抗酸化性組成物を得る。【選択図】図1
