Influence of monosodium glutamate and ascorbic acid on the accumulation of γ-aminobutyric acid in germinating brown rice

The brown rice was into the solution with different addition concentration of monosodium glutamate(MSG)and ascorbic acid(ASA)for germination under the conditions of 32 ℃,aerated volume of 1.2 L·min~(-1) and darkness.The influence of MSG,ASA and the time of MSG addition on the accumulation of γ-aminobutyric acid(GABA) in germinating brown rice was(studied) with single and orthogonal trial designs.The results showed that under the optimum combination condition of 1 mg·mL~(-1) MSG,5 mg·mL~(-1) ASA and after adding the MSG for 24 hours germination,the content of GABA in germinating brown rice reached 924.84 nmol·L~(-1),was 2.73 times higher than that in control group.