Abstract
Twenty-eight samples of commercial articles of Phellodendri Cortex, originating from Phellodendron amurense RUPRECHT, P. chinense SCHNEID, P wilsonii HAYATA et KANEHIRA, and P chinense SCHNEID. var. glabrius culum SCHNEID, were collected from different herbal markets in Taiwan and Mainland China. The five alkaloids berberine, palmatine, jatrorrhizine, phellodendrine, and magnoflorine were determined by capillary electrophoresis for their contents in the samples, thereby a chemical identification method was established for identifying the sources of the drug materials. As this study turned out, P. chinense var. glabrius culum-was found to be the predominant variety prevailing in Taiwan markets owing to their considerably high alkaloid contents (18-38 mg/g), and was currently introduced into Taiwan. With the analytical results obtained in this study, characteristic fingerprint for the variety of P. chinense var. glabrius culum was made and the suitability of the previously established chemical identification methods in the identification of other species of the drug materials were further verified. In addition, a facile identification flowchart based on the various chemical identification methods for Phellodendri Cortex was devised.
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