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  Indian J Med Microbiol
 

Figure 4: The high performance liquid chromatography chromatographs of standards and samples of Polygoni Multiflori Radix (Heshouwu). (a) Standard solution of emodin; (b) standard solution of physcion; (c) sample solution. Peak 1: Emodin; peak 2: Physcion at column width

Figure 4: The high performance liquid chromatography chromatographs of standards and samples of Polygoni Multiflori Radix (Heshouwu). (a) Standard solution of emodin; (b) standard solution of physcion; (c) sample solution. Peak 1: Emodin; peak 2: Physcion at column width