BIOSYNTHESIS OF GAMMA-AMINOBUTYRIC ACID USING LACTIC BACTERIA - A CASE STUDY ON VIETNAMESE RICE

Abstract

Gamma amino butyric acid GABA) is the chief inhibitory neurotransmitter in the developmentally mature mammalian central nervous system. Its principal role is to reduce neuronal excitability throughout the nervous system. Therefore, GABA has such important physiological functions, many studies focus on the development of GABA into dietary supplements. Currently, GABA was produced by different ways, such as extraction from grains, determination of the optimal conditions for rice grain to germinate, or fermentation by microorganisms. In which, lactic acid bacteria have been applied and met high efficiency in the process of biosynthetic fermentation of large amounts of GABA in the industrial production. A case study on Vietnamese rice bran will be introduced in this paper consisting of the effect of different fermentation conditions using Lactobacillus brevis on GABA concentration in red brown rice; isolation, classification of lactic bacteria from Vietnamese traditionally