and , Sources of : Comparison of Anti-Lipoxygenase and Antioxidant Activity as well as the Chemical Composition of Extracts from Aerial Parts and from Roots.

is a weed used in traditional medicine in the treatment of skin inflammation and digestive tract diseases. is used in folk medicine interchangeably with and, according to European Medicines Agency (EMA) monography, provides an equal source of (), despite the small amount of research confirming its activity and chemical composition. The aim of the study was the comparison of the anti-lipoxygenase and the antioxidant activity, scavenging of 2,2-diphenyl-1-picrylhydrazyl (DPPH), superoxide anion (O), and hydrogen peroxide (HO), of 70 % () ethanolic extracts from the aerial parts and the roots of and . In the tested extracts, the total polyphenols content and the chemical composition, analyzed with the HPLC-DAD-MS method, were also compared. The extracts were characterized by strong antioxidant properties, but their ability to inhibit lipoxygenase activity was rather weak. A correlation between the content of polyphenolic compounds and antioxidant activity was observed. The extracts from plant materials scavenged reactive oxygen species more strongly than the extracts from plant materials. Moreover, the extracts from plant materials were characterized by the statistically significantly higher content of polyphenolic compounds.