Table 2 Quality evaluation of QYYYG
Major constituents | Method of determination | Quality specifications |
|---|---|---|
2,3,5,4′-tetrahydroxystilbene-2-O-β-D-glucopyranoside | HPLC | >6 mg per 10 g QYYYG |
Polygoni Multiflori Radix | TLC | Contained |
Herba Bidentis Bipinnatae | TLC | Contained |
Corni Fructus | TLC | Contained |
Cyathulae Radix | TLC | Contained |