Volatile oils from leaves and stem barks of Cedrela fissilis (Meliaceae):chemical composition and antibacterial activities

摘要

The volatile oils from the leaves and stem barks of Cedrela fissilis were submitted to GC-MS analysis and separation by adsorption chromatography.The fractions were analysed by GC,~1H- and ~(13)C-NMR as well as GC-MS.The major components found in the leaf oil were beta-caryophyllene (26.3%) and bicyclogermacrene (34.6%),while in the stem bark oil the major compounds were beta-bisabolene (10.9%) and globulol (10.9%).In an antibacterial assay,only the leaf oil was able to inhibit growth of Staphylococcus aureus and Eschorichia coli.