Studies on the Quality Standard of Hand.-Mazz

OBJECTIVE To set up the quality standards of Hand.-Mazz through determination of the contents of water extracts, total ashes, ashes imdissolvable in acid, moisture and effective components in this herb. METHODS TLC was used for identification of caffeic acid and chlorogenic acid, and HPCE for content determination. These indexes were determined based on the procedures recorded in the Appendix IX H, IX K and X A of Ch.P(2005), for moisture, ashes and extracts determination respectively. RESULTS The calibration curve displayed good linear relationship within caffeic acid and chlorogenic acid, concentration range of 0.009 8-0.078 1 mg·mL^-1, 0.008 5-0.067 8 mg·mL^-1. The moisture in dandelion was less than 10%, with the total ashes content within 20%, ashes imdissolvable in acid not higher than 10%, the content of water extracts with hot soak was higher than 25%, the content of water extracts was higher than 20%. CONCLUSION These datas are quantitatively referable for making the quality standards of Hand.-Mazz better.