The constituents of the essential oils of leaf, petiole, shoot and terminal shoot of Cinnamomum malabatrum were determined by GC and GC-MS. Thirty-nine compounds, constituting 95% of the oil, were identified in the leaves. Major constituents of the leaf oil were (E)-caryophyllene (28.6%), (E)-cinnamyl acetate (15.1%), bicyclogermacrene (14.4%) and benzyl benzoate (8.5%). Twenty-eight compounds, representing 98% and 97% of the oil, were identified in the petioles and shoots, respectively, whereas in the oil of the terminal shoots 34 compounds, accounting for 97%, were identified. The essential oils of the petioles, shoots and terminal shoots were dominated by linalool (77.8−79.4%). This is the first report of the essential oil constituents of C. malabatrum.

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The essential oil composition of Cinnamomum citriodorum leaves and petioles was determined by gas chromatography (GC) and GC-mass spectrometry (GC-MS) analysis. Leaf and petioles yielded 0.11% and 0.42% essential oil respectively. In leaf oil, twenty-seven constituents representing 97.2% of the oil were identified. Major components of the oil were citronellol (66.5-71.1%), citronellal (10.8-10.9%) and trans-geraniol (5.9-6.5%). In the oil from the petiole, thirty-eight compounds contributing 91.3% of the oil were identified, of which citronellol (36.2-38.3%), citronellal (9.9-15.4%) and α-copaene (8.7-10.3%) were the chief constituents. Although both oils were dominated by monoterpene alcohols, the oil from the petiole contained a higher level of sesquiterpenes (26.3-36.2%) compared with the leaf oil (5.0-9.9%).

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