Figure 3

NP-HPLC analysis of catechins and proanthocyanidins from leaf (A), stem (B) and root (C) extracts of tea plant.

(1a): catechin and epicatechin; (1b): gallocatechin and epigallocatechin; (1c): epicatechin gallate; (1d): epigallocatechin gallate; 2 ~ 9 represent degree of polymerization of proanthocyanidins.