Production of gamma-amino butyric acid in tea leaves with treatment of lactic acid bacteria
2009
Watanabe, Y.(Fukujuen Co. Ltd., Kizugawa, Kyoto (Japan)) | Hayakawa, K. | Ueno, H.
Lactic acid bacteria were searched for producing fermented tea that contained a lot of gamma amino butyric acid (GABA). Also examined were the growth condition, GABA production and changes in catechin contents in the tea leaves. Lactobacillus brevis L12 was found to be suitable for the production of fermented tea since it gave as much GABA as gabaron tea when tea leaves being suspended with water at 10% and incubated for 4 days at 25degC. The amount of GABA produced was more than calculated based upon the content of glutamic acid in tea leaves. It is probable to assume that glutamate derived from glutamine and theanine is converted into GABA.
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