China is the first big country in producting and exporting green tea.In the recent years,Green tea are more and more accepted by consumers because of its nice healthy effect and anticancer function. In the tea, Theanine is regarded as the characteristic amino acids,and related to the quality of green tea in coefficient of 0.787-0.876.Now it has became one of the hot global attentions. Comparison of the amino acids content and the proportion of each components within the same species and different varieties ...