Simultaneous Analysis of Four Standards of The Herbal Formula, DF-02, of Ephedra intermedia and Rheum palmatum, using by High Performance Liquid Chromatography-Ultraviolet Detector (HPLC-UVD)

The herbal formula, DF-02, consisting of Ephedra intermedia and Rheum palmatum are used for the treatment of the metabolic diseases such as obesity and liver fibrosis in Korean local clinics. We aimed to develop the simultaneous analytical conditions for four standards, (+)-pseudoephedrine (PSEP) and (−)-ephedrine (EP) for E. intermedia, and aloe-emodin (AE) and chrysophanol (CP) for R. palmatum using HPLC-UV techniques. The validated conditions...