... acid (GABA) 1. Catalytically converted from glutamic acid through glutamate decarboxylase, GABA, a kind of natural non-protein amino ... is an important neurotransmitter of the central nervous system for mammals.2. GABA can be found in our eye retinas and ... , toast, bread, instant noodles and other functional food and drinks. CAS NO. 56-12-2 Microbial fermentation,Rice bran, Natural, GABA,content 50 ...