| 摘要 |
A medium composition comprising a Korean hot pepper paste(gochujang)-fermentation product or undiluted soybean sauce, and a production method of gamma-aminobutyric acid are provided to optimally cultivate lactic acid bacteria having activity of glutamate dicarboxylase(GAD), inexpensively produce gamma-aminobutyric acid, and produce functional food containing gamma-aminobutyric acid. The medium composition comprises the Korean hot pepper paste(gochujang)-fermentation product or undiluted fermented or acid-hydrolyzed soybean sauce, wherein the medium composition further comprises glutamic acid or glutamate; the Korean hot pepper paste(gochujang)-fermentation product is derived from one selected from wheat, wheat bran, wheat rice, rice, barley, African millet, corn, oat, buckwheat, millet and processed products thereof; the undiluted fermented or acid-hydrolyzed soybean sauce is derived from one selected from soybean, bean flour, defatted soybean, kidney bean, mung bean and processed products thereof; and the medium composition further comprises sugar, NaCl, glutamate, pyridoxal phosphate, garlic or tomato puree. The gamma-aminobutyric acid is produced by culturing a lactic acid bacterium having activity of glutamate dicarboxylase in the medium composition. |
