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Simultaneous Identification and Quantification of Anthraquinones, Polydatin, and Resveratrol in Polygonum multiflorum, Various Polygonum Species, and Dietary Supplements by Liquid Chromatography and Microscopic Study of Polygonum Species

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A high-performance liquid chromatographic (HPLC) method with ultraviolet absorption detection was developed to determine the presence of anthraquinones, polydatin, and resveratrol in Polygonum multiflorum Thunb. as well as other medicinal Polygonum species, viz., P. cuspidatum, P. oriental, P. aviculare, and P. vulgare, as well as commercial products that claim to contain P. multiflorum. The best results were obtained with a Phenomenex Gemini C18 column using gradient mobile phase composed of water (0.1 acetic acid) and acetonitrile (0.1 acetic acid). Elution was at a flow rate of 1.0 mL/min. The detection wavelength was 280 nm for anthraquinones and 320 nm for polydatin and resveratrol. The main anthraquinones identified were emodin and physcion. The HPLC pattern of P. multiflorum was also compared with 5 other species of Polygonum. The method was validated for precision, repeatability, and accuracy. The relative standard deviation was between 0.9 and 1.6. The method was sensitive, quick, and accurate for determination of anthraquinones, polydatin, and resveratrol in 6 different species of Polygonum and can be used for quality control of P. multiflorum. The commercial samples and the 6 Polygonum species were compared microscopically, and a detailed description is provided for P. multiflorum.
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Document Type: Research Article

Affiliations: 1: National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, University, MS 38677. 2: National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, Department of Pharmacognosy, The University of Mississippi, University, MS 38677.

Publication date: November 1, 2007

More about this publication?
  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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