PHENOLIC COMPOUNDS IN LEAVES AND RACEMES HEDYSARUM ALPINIM L. AND H. FLAVESCENS REGEL ET SCHMALH., INTRODUCED INTO THE FOREST-STEPPE ZONE OF WESTERN SIBERIA

Abstract

The change in the composition and content of phenolic compounds in the leaves and racemes of Hedysarum alpinim L. and H. flavescens Regel et Schmalh., introduced into the forest-steppe zone of Western Siberia were studied. On the example of H. alpinim, the changes in the content of phenolic compounds depending on the year of harvest and on the plant organ (leaves, racemes) were studied. The content of individual substances (gallic, chlorogenic acids, mangiferin, hyperoside, rutin, avicularin and 17 components of a phenolic nature) and the content of phenolic compounds by groups (hydroxycinnamic and hydroxybenzoic acids, xanthones and flavonols) were determined. Differences in the content of phenolic compounds by groups (in mg / 100 g) were found between the two species of the genus Hedysarum L.: xanthones and flavonols (up to 4614.9±63.7 and 1280.0±6.7, respectively) in leaves and xanthones (up to 847.9±29.8) in racemes in H. alpinim accumulated more than xanthones and flavonols (2911.6±79.0 and 976.2±0.5, respectively) in leaves and xanthones (76.2±2.5) in racemes H. flavescen. In the leaves of H. flavescens, in comparison with the leaves of H. alpinim, the content of hydroxybenzoic and hydroxycinnamic acids prevails. The leaves of the studied species accumulate the most hydroxycinnamic acids and xanthones, while the racemes accumulate the most flavonols. The content of hydroxybenzoic acids, xanthones, and flavonols H. alpinim varied significantly depending on the year of observation.