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This study was aimed to investigate the chemical compositions of the essential oils from  Goniothalamus macrophyllus  and  Goniothalamus malayanus  growing in Malaysia. The essential oils were obtained by hydrodistillation and fully characterized by gas chromatography (GC–FID) and gas chromatography–mass spectrometry (GC–MS). Analyses of the essential oils from  G. macrophyllus  and  G. malayanus  resulted in 93.6 and 95.4% of the total oils, respectively. The major components of  G. macrophyllus  oil were germacrene D (25.1%), bicyclogermacrene (11.6%), α-copaene (6.9%) and δ-cadinene (6.4%), whereas in  G. malayanus  oil bicyclogermacrene (43.9%), germacrene D (21.1%) and β-elemene (8.4%) were the most abundant components.

Chemical characterization of Goniothalamus macrophyllus and Goniothalamus malayanus leaves’ essential oils