Moreover, it has been
believed that it can facilitate cell survival by maintaining
cellular pH, even under acidic environments, because GAD
must consume an H+ ion for GABA production. Similarly,
dairy products with high GABA and GAD activity are
capable of sustaining through the digestive system, by
which they made it possible to have probiotic eVects, and
also they may possess the same acid-stability properties
that are required to survive in the intestines. Additional animal
and clinical studies are needed on the GABA soya
yogurt and lactic acid bacteria with a high GABA producing
power with a particular emphasis on acid-stability and
bile resistance.