Antioxidant Evaluation of Baccharis patens and Baccharis psiadioides Essential Oils

作者：da Silva Eliane Regina^*; Lazarotto Diana Carla; Pawlowski Angela; Schwambach Joseli; Goncalves Soares Geraldo Luiz

来源：Journal of Essential Oil Bearing Plants, 2018, 21(2): 485-492.

DOI：10.1080/0972060x.2018.1470944

• Asteraceae shrubs
• DPPH method
• essential oil characterization

The chemical composition of the essential oil of Baccharis patens Baker leaves was analyzed for the first time in the literature, by GC-MS and GC-FID. The antioxidant activity of B. patens and B. psiadioides (Less.) Joch. Mull. essential oils was determined by DPPH radical scavenging method. The oil was a complex mixture of terpenes, with 57 identified compounds. Sesquiterpene hydrocarbons were the main fraction (37.13 %). Thymol, a standard antioxidant, showed 90 %of antioxidant activity at 20 mg/mL. At a higher concentration, 100 mg/mL, B. patens and B. psiadioides essential oils resulted in 42 % and 50 % of antioxidant activity, respectively. Comparable antioxidant activity of the essential oils may be due to the similar low activity of their major compounds.

• 出版日期2018