Content of mangiferin and sum of xanthones in plants of some wild-growing and introduced <i>Hedysarum (Fabaceae) </i>species
Content of mangiferin and sum of xanthones in leaves of 7 species <i>Hedysarum </i>L. <i>(H. alpinum </i>L., <i>H. flavescens </i>Regel et Schmalh., <i>H. austrosibiricum, H. neglectum </i>Ledeb., <i>H. theinum </i>Krasnob., <i>H. gmelinii </i>Ledeb. and <i>H. tschuense), </i>growing on the forest-steppe zone of Western Siberia (Novosibirsk) and in natural populations Republic Altai and Northern Kazakhstan was studied. The greatest amount of mangiferin and the sum of xanthones was revealed in leaves of <i>H. alpinum </i>and <i>H. flavescens </i>(to 4.3 and 6.0 %). <i>H. austrosibiricum, H. neglectum </i>and <i>H. theinum </i>contained almost twice less than them, <i>H. gmelinii </i>- about 1.0 %, in leaves of <i>H. tschuense </i>xanthones were absent. Cultivated plants synthesize more xanthones, than wild-growing.