title: BIOLOGICAL ACTIVE SUBSTANCES AND ANTIOXIDANT ACTIVITY OF SIBIRAEA ALTAIENSIS (LAXM.) SCHNEID. (ROSACEAE)
abstract: The content of biologically active substances and the level of antioxidant activity in the aerial organs of different sexual forms of Sibiraea altaiensis (Laxm.) Schneid. during the growing season were investigated for the first time. It was found that the maximum content of biologically active compounds varies depending on the stage of development, plant organ and also gender. The amount of flavonols (5.69%), tannins (30.17%) is higher in the leaves of male plants during the budding of plants, 
journal: chemistry of plant raw material