| abstract |
(57) [Summary] [Structure] Dried banana leaves are extracted with hot water at 95 to 100 ° C. The obtained crude extract is dissolved in 1 liter of distilled water and poured into a glass column filled with a styrene-divinylbenzene synthetic resin. Then, distilled water is caused to flow to flow out the synthetic resin non-adsorbed fraction, while 100% methanol is caused to flow to elute the adsorbed fraction. The adsorbed fraction thus obtained is concentrated and dried by freeze-drying or the like to obtain a dry powder. [Effects] When the adsorbed fraction thus obtained is added to the diet and administered to type II hereditary diabetic mice, a remarkable blood glucose effect is observed as compared to the non-adsorbed fraction administration. |