A COMPARATIVE STUDY OF THE COMPONENT COMPOSITION OF THE HERBS OF SOME SPECIES OF THE GENUS ACHILLEA L.

The article presents the results of a comparative study of the component composition of herbs of some species of the genus Achillea L. growing in the Samara region - common yarrow (Achillea millefolium L.), cartilaginous yarrow (Achillea cartilaginea (Ledeb. ex Rchb.) and noble yarrow (Achillea nobilis (L.). Spectrophotometry and high performance liquid chromatography were used as methods of investigation. As a result of comparative spectrophotometric analysis of water-alcoholic extracts of common yarrow herbs, yarrow cartilaginous herbs and noble yarrow herbs revealed that the absorption curve of their UV spectra is due mainly to hydroxycinnamic alcohols, in particular chlorogenic and caffeic acids (290 sh. and 330 nm). When aluminum (III) chloride solution was added to the water-alcoholic extracts of yarrow herb from the studied species, a bathochromic shift of the long-wave band at 400 nm was observed due to the flavonoids. The content of total flavonoids in the plant raw material is: common yarrow - 0.68±0.01%, cartilaginous yarrow - 0.65±0.02%, noble yarrow - 0.69±0.02%. Chlorogenic acid, cynaroside, cosmosiin, apigenin and luteolin were identified in water-alcoholic extracts from the above described species using HPLC method. In addition, the presence of caffeic acid was detected in the water-alcoholic extracts of noble yarrow herbs. The content of cosmosiin in the plant raw material is: common yarrow - 0.61±0.01%, cartilaginous yarrow - 0.56±0.02%, noble yarrow - 0.62±0.02%. The results of the study can be used in the development of regulatory documentation for medicinal plant material "Yarrow herb" for inclusion in the State Pharmacopoeia of the Russian Federation.