Chemical composition and antioxidant activity of essential oil from Baccharis odorata Kunth grown in Cuzco, Peru

Abstract

The chemical composition and antioxidant activity of the essential oil from the leaves and flowers of Baccharis odorata Kunth grown in Cuzco, Peru were studied. One hundred forty-one compounds were identified in the essential oil. Oxygenated sesquiterpene and sesquiterpene hydrocarbons were the most represented classes of volatiles with 36.1% and 33.6%, respectively. The main constituents of the essential oil were δ-cadinene (9.1%), β-pinene (8.8%), α-cadinol (8.1%) and limonene (6.2%). Antioxidant properties were examined using the DPPH ferric-reducinging antioxidant power assays. For DPPH radical scavenging assay, the IC50 value was 10.2 ± 1.6 μg/mL, while the FRAP was between 301.3 ± 23.4 to 480.2 ± 21.2 μM of ascorbic acid equivalents.