Achillea millefolium (Asteraceae, yarrow) has been used in folk medicine against several disturbances including skin inflammations, spasmodic and gastrointestinal disorders. In this study, ethanol and water extracts were pre-pared from A. millefolium flowers, leaves and seeds. Antioxidant activities were measured by ferric thiocyanate method, and H2O2 radical scavenging activity assays and phenolic compounds and flavonoid contents of A. millefo-lium extracts were also determined. In conclusion, extracts of A. millefolium flowers, leaves and seeds had effecti-ve H2O2 radical scavenging activity, total antioxidant activity, and these antioxidant activities were compared with BHA and atocopherol as reference antioxidants.
Keywords: Achillea millefolium, Yarrovv, Antioxidant, Total phenolic, Flavonoid