Chemical composition, antioxidant activity and antibacterial effect of essential oil of the aerial parts of Salvia sclareoides.

Objective: To determine the chemical composition, antioxidant activity and antibacterial properties of essential oils of the aerial parts of Salvia sclareoides (S. sclareoides).
Methods: The essential oil of the areal parts of S. sclareoides was obtained by using hydrodistillation method and the composition of the volatile components analyzed by gas chromatography method coupled with mass spectrometry detector. The antimicrobial capacity of the essential oil of S. sclareoides was investigated by microdilution technique. The antioxidant activities were determined employing inhibition of 2,2-diphenyl-1-picrylhydrazyl hydrate radical method.
Results: Mass spectra were searched against mass spectrometry databases and sixty components were recognized. Non-terpenoids (41.6%) and sesquiterpenes (39.7%) were determined as the main components of the essential oil. The main identified components were, linalool (27.6%), trans-caryophyllene (16.6%), beta.-trans-ocimene (11.831%), germacrene-D (10%), bicyclogermacrene (3.3%) and caryophyllene oxide (2.8%). Two monoterpens (13.2%) and three oxygenated sesquiterpenes (5.5%) were also obtained from the essential oil of the S. sclareoides
Conclusions: Results indicated that essential oil of S. sclareoides includes rather higher proportions of non-terpenoid and sesquiterpenes compounds with good antioxidant and antibacterial properties.
(Copyright © 2014 Hainan Medical College. Published by Elsevier B.V. All rights reserved.)