Research of the extraction temperature of high GABA fresh tea leave

The experiment used high GABA fresh tea leave as raw material, evaluated three different extraction temperatures and the impaction on the GABA contented during the processing procedure. The results showed that three different extraction temperatures extract decreased as the temperature increases, the content of GABA increased first and then decreased. The instant tea powder had best quality and extract content of GABA in maximum under the extraction temperature at 60℃. Premium processing procedure of GABA tea powder was below:extraction 60℃, 30min, tea/water ratio 1∶ 6, pH6. 5 ~ 7. 0.