γ-aminobutyric acid(GABA),presenting in the mammalian central nervous system as a major inhibitory neurotransmitter in the central nervous system,is one of natural non-protein amino acid,with the physiological activity of lowering blood pressure,soothing the nerves, treating epilepsy,enhancing memory,regulating hormone secretion,controling asthma,and activating of liver and kidney function.As a new functional factor,GABA has broad prospects for the development and applicationin in the field of functi...