Investigation of chemical composition of Achillea wilhelmsii C. Koch

In recent years, reports have been presented on the chemical properties of some species of Achillea species. The aim of the present study is to evaluate the phytochemical and antioxidant activity of the essential oil (EO) of Achillea wilhelmsii C. Koch by GC–MS and DPPH radical sequestering methods, respectively. Essential oils were obtained by a Clevenger-type. The major grouped compounds identified as oxygenated monoterpenes (68.68%), oxygenated sesquiterpenes (14.78%), monoterpene hydrocarbons (10.15%), sesquiterpene hydrocarbons (1.20%), phenyl propanoides (0.20%) and miselaneous (0.58%), respectively. In total, 81 compounds were recognized, accounting for 95.59 % of the EO. Also, the IC50 value of the EO was 131 mg/mL for the DPPH-scavenging ability. In conclusion, these results support the of the essential oil and its main compounds use for their antioxidant properties.