Gaba 50g

GABA tea is tea that has undergone a special oxygen-free fermentation process, and as a result has accumulated GABA in tea leaves. This technology has been created in Japan. Dr. Tsushida and his collaborators at the former MAFF National Research Institute of Tea began developing GABA-rich tea in 1984 and successfully produced a new type tea in which almost all glutamic acid has been converted to GABA without changing the content of catechin or caffeine. They discovered a new method of tea fermentation, and found that a large amount of GABA accumulated in green tea through six to ten hours in anaerobic condition of fermentation. Oxygen in the atmosphere fermentation chamber was replaced with nitrogen. They examined further the GABA content of green, oolong and black tea made under anaerobic condition and found that GABA accumulated in all teas.