| abstract |
(57) Abstract: At least one of soybean containing soybean germ, soybean germ, and soybean excluding germ or a defatted product thereof is prepared under conditions of pH 1.5 to 12 and 60 ° C or lower. , A food material enriched in γ-aminobutyric acid obtained by adding water and a method for producing the same. Further, a method for producing γ-aminobutyric acid, wherein the food material is extracted with water and purified by ion exchange chromatography. According to the present invention, a food material containing a high concentration of γ-aminobutyric acid and a highly pure γ- Aminobutyric acid can be produced. These can be used as special nutritional foods for hypertensive patients. |