Enzymatic production of γ-aminobutyric acid from rice germ
Production of γ-aminobutyric acid(GABA), which shows an antihypertensive effect, from glutamate was investigated using rice germ as enzyme (glutamate decarboxylase, GAD) source. At the optimum conditions, 20.6g of GABA per 100g rice germ was gotten by incubation for 6h at 40℃, with the conversion rate of 100%.