Abstract:

Biochemical components diversity and quality of green tea about local tea germplasm resources in Guizhou were studied by physical and chemical inspecting or tea sensory testing. The results showed that the content of water extract is 40.7%～48.7%（average 45.0%），amnio acids 2.9%～4.4%（average 3.3%），polyphenols 21.0%～38.2%（average 32.6%），polyphenols/amnio acids 6.4～12.3（average 10.0），caffeine2.5%～3.2%（average 2.8%），total catechin 13.54%～17.07%（average 14.77%），catechin guality index 2.12～3.62（average 2.80）.Amnio acids content in GT–02 is higher than Fu Ding Da Bai Cha，polyphenols/amnio acids in GT–01and GT–02 are lower than Fu Ding Da Bai Cha，totol catechin and catechin guality index in GT–07、GT–08、GT–09 and GT–10 are higher than or close to Fu Ding Da Bai Cha，the scores of green tea sensory quality of GT–12 、GT–13 and GT–14 are higher than or close to Fu Ding Da Bai Cha，the results indicated that these resources have a good green tea quality.Beside this，GT–10 tea population resource showed higher EGCG content as 8.66% than other resources，it is worth developing.