Quality standard for Tibetan Pyrethrum tatsienense(Bur.et Franch.)Ling
Objective To improve the quality standard of Tibetan Pyrethrum tatsienense(Bur.et Franch.)Ling.Methods According to the 2020 Chinese Pharmacopoeia(Volume Ⅳ),7 batches of Tibetan Pyrethrum tatsienense(Bur.et Franch.)Ling from different sources were studied.The appearance characteristics,microscopic,thin layer chromatography identification,and moisture,total ash,extract,and content were identified.Results Pyrethrum tatsienense(Bur.et Franch.)Ling was specific in character,under the microscope and in thin layer chromatography identification.The content ranges of moisture,total ash,acid insoluble ash and the water-soluble extract of hot leaching were 9.18％～12.00％,6.48％～7.98％,1.28％～1.62％,and 25.32％～34.05％,respectively.The content of moisture,total ash and acid insoluble ash was supposed to be no more than 13.0％,8.0％and 1.8％,respectively.The water-soluble extract of hot leaching should be no less than 24.0％.A good linearity of total flavonoids in Pyrethrum tatsienense(Bur.et Franch.)Ling occurred at 18.892～113.352 mg·L-1(r=1.000),and the average recovery was 97.6％(RSD=2.4％),with good method accuracy.The content of total flavonoids in the Pyrethrum tatsienense(Bur.et Franch.)Ling should be no less than 2.5％.Conclusion The study provides a scientific basis for the quality control and improvement of Pyrethrum tatsienense(Bur.et Franch.)Ling.
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