The essential oils obtained by hydrodistillation from the leaves of five species of Annonaceace grown in Vietnam were analyzed by gas chromatography (GC) coupled with mass spectrometry (GC/MS). The main constituents of Artabotrys hongkongensis Hance were the sesquiterpenes spathulenol (13.1%), beta-caryophyllene (6.6%), gamma-elemene (6.3%) and delta-cadinene (6.3%). beta-Caryophyllene (12.1%), bicycloelemene (11.2%) and bicyclogermacrene (11.6%) were the predominant components of the oil of Melodorum fruticosum Lour, whereas the oil of Polyalthia longifolia var. pendula Hort was comprised mainly of beta-caryophyllene (30.0%), alpha-zingiberene (21.7%), aromadendrene (15.2%) and beta-selinene (9.1%). The main constituents of Fissistigma maclurei Merr. were germacrene D (26.1%), alpha-terpinene (8.2%), spathulenol (10.0%), and bicyclogermacrene (6.6%), while alpha-santalene (14.3%), beta-caryophyllene (6.3%), terpinen-4-ol (6.3%), caryophyllene oxide (5.7%), trans-alpha-bergamotene (5.3%) and allo-ocimene (5.3%) were identified in significant quantity from Fissistigma rufinerve (Hook.f. & Thomson) Merr.
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