COMPARATIVE STUDY OF THE CONTENT OF BIOLOGICALLY ACTIVE SUBSTANCES DASIPHORA FRUTICOSA AND СОMARUM SALESOVIANUM, GROWING IN ALTAI MOUNTAINS
A comparative study of biochemical parameters of two closely related species of plants Dasiphora fruticosa and Соmarum salesovianum (shrub and subshrub), growing in the Altai Mountains, was carried out for the first time. It is established that plants contain a rich complex of biologically active substances: flavonols, tannins, catechins, carotenoids, saponins, pectin substances. In the leaves and flowers of D. fruticosa, the content of flavonols, tannins, saponins and pectin substances is 1.1-2.5 times higher than that of C. salesovianum. Particularly significant differences in the content of pectin substances and tannins, which are mainly synthesized in the leaves of plants. By contrast, saponins and flavonols accumulate in flowers more,than in leaves. Maximum content of carotenoids identified in the leaves of plants C. salesovianum (up to 70.4 mg%), but the yellow flowers of D. fruticosa contain carotenoids more 3.2 times than the white flowers of S. salesovianum. High antioxidant activity were found in water-ethanol extracts of leaves (up to 0.85 mg/g) and flowers (up to 0.98 mg/g) of D. fruticosa, which may be due to the increased content of phenolic compounds, in particular tannins compared with the S. salesovianum.