PROBLEM TO BE SOLVED: To provide a method for extracting polysaccharides comprising β-glucan as a main component from a mushroom with high yield and excellent efficiency.SOLUTION: In a method for extracting polysaccharides comprising β-glucan as a main component, a mushroom is treated with water having a temperature within the range of about 140-180°C under a pressure within a range of about 2-3 MPa. The mushroom is preferably maitake mushroom. The mushroom to be used is preferably used after being pretreated with a solvent. The polysaccharides are soluble in water, so that they are easy to be ingested into a living body. Therefore, the polysaccharides can be utilized for pharmaceuticals, especially pharmaceuticals for prevention and/or treatment of tumors, quasi-drugs, cosmetics, health foods, health supplements, foods for specified health use, foods such as dietary supplements, or animal feeds.COPYRIGHT: (C)2015,JPO&INPIT【課題】キノコからβ-グルカンを主体とする多糖類を、高収率で効率よく得る抽出方法の提供。【解決手段】キノコを、約2~約3MPaの範囲の圧力下にある約140~約180℃の範囲の温度の水で処理することによる、β-グルカンを主体とする多糖類の抽出方法。該キノコとしては、マイタケであることが好ましい。使用するキノコは、予め溶媒で処理したものを用いることが好ましい。該多糖類は、水溶性であるので、生体に取り込まれやすく、医薬品、特に腫瘍の予防及び/又は治療用医薬品、医薬部外品、化粧品、あるいは健康食品、健康補助食品、特定保健用食品、又は栄養補助食品などの食品、あるいは動物用飼料に利用できる。【選択図】なし
