Comparative analysis of antiradical components in some medicinal plant extracts

A total amount of compounds with antiradical properties in alcoholic extracts of the leaves of five medicinal plants has been analysed. The order was Hypericum perforatum>Tanacetum vulgare=Plantago major=Achillea millefolium> Pinus sylvestris (second year needles). An average content of antiradical components in Hypericum perforatum leaves was 9 times higher than this value in the needles of Pinus sylvestris. It has been revealed that the reaction ability of compounds extracted from plant leaves toward DPPH radical decreases in following order: Achillea millefolium>Tanacetum vulgare>Hypericum perforatum. Relatively high antiradical antioxidant concentration in Hypericum perforatum leaves is due to high input of compounds with low reaction ability toward DPPH radical.