Evaluation of the Chemical Composition and Antioxidant Activity of the Essential Oils of Peucedanum longifolium (Waldst. & Kit.) and P. palimbioides (Boiss.)

Abstract

This study was designed to evaluate the chemical composition and antioxidant activity of the essential oils of Peucedanum longifolium and P. palimbioides. According to the GC-MS analysis, 35 compounds were accounted for 96.98% of the total oil of P. longifolia. Major components of the oil were 8-cedren-13-ol (33.74%), myristicin (8.03%), germacrene-D (7.73%) and Delta-3-carene (6.38%). In the case of P. palimbioides, 26 compounds were identified comprising the 98.96% of the total oil. The major compounds were described as a pinene (35.45%), (E)-9-octadecenoic acid (23.57%) and beta-pinene (20.19%). In general, P. palimbioides oil exhibited stronger than that of P. longifolia in all test systems. Especially in beta-carotene/linoleic acid system, P. palimbioides showed strong activity against linoleic acid oxidation at 2.0 mg/mL concentration (90.58% +/- 1.56). This value is too close to the synthetic antioxidants BHT and BHA at the same concentration (95.86% +/- 0.23 and 93.05% +/- 1.04, respectively). This plant also exhibited excellent chelating effect (90.39% +/- 0.28) which is obviously greater than that of P. longifolium at 2.0 mg/mL concentration (24.12% +/- 2.50). Chelating effect of the control agent EDTA was measured as 98.78% +/- 0.78 (2.0 mg/mL).