Research status of recycling medicinal plant waste Textual research on change of medicinal parts and herbal medicineof Prunella vulgaris Determination of eleutherosides B and E from different parts of Acanthopanax henryi by RP-HPLC Determination of eleutherosides B and E from different parts of Acanthopanax henryi by RP-HPLC Distribution and dynamic changes of chemical constituentes from non-medicial parts of Chrysanthemum morifolium