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Essential Oils from the Leaves of Some Queensland Annonaceae

2004; Taylor & Francis; Volume: 16; Issue: 2 Linguagem: Inglês

10.1080/10412905.2004.9698660

2163-8152

Joseph J. Brophy, Robert J. Goldsack, Paul I. Forster,

Essential Oils and Antimicrobial Activity

Abstract The leaf oils of seven species from the family Annonaceae, growing in Queensland, Australia, have been examined. Artabotrys sp. (Claudie River B.Gray 3240) produced oil in poor yield in which unidentified oxygenated sesquiterpenes accounted for approximately 80% of the oil. Uvaria rufa gave an oil rich in sesquiterpenes, in which the principal component was a-humulene (50%), while in Uvaria concava the principal component was spathulenol (32%). Benzyl benzoate was also present (5%) in U. rufa. In Cyathostemma micranthum the principal components were caryophyllene oxide (26%), spathulenol (11%) and benzyl benzoate (4%). The oil of Mitrephora zippeliana existed in two forms in which either monoterpenes were more prominent with a-pinene (13%) and β-pinene (15%) being the major components together with the sesquiterpenes caryophyllene oxide (10%), spathulenol (10%) and β-caryophyllene (8%), or sesquiterpenes were prominent with β-caryophyllene (18%), α-humulene (7%), γ-curcumene (4%), bicyclogermacrene (4%), ar-curcumene (5%), caryophyllene oxide (3%) and spathulenol (5%) being the principal components. Goniothalamus australis presented a leaf oil that contained significant amounts of both mono-and sesquiterpenes; one sample contained pinocarvone (10%) and trans-pinocarveol (17%) as the principal monoterpenes, while a second collection contained α-pinene (10–11%) as the principal component. Cananga odorata gave a leaf oil in which the major components were β-caryophyllene (34–52%), sabinene (1–20%), α-humulene (6–11%) and a-pinene (1–17%). Key Word Index: Artabotrys sp. (Claudie River B. Gray 3240) Cananga odorata Cyathostemma micranthum Goniothalamus australis Mitrephora zippeliana Uvaria rufa Uvaria concava Uvaria membranacea Annonaceaeessential oil compositioncaryophyllene oxidespathulenolα-pineneβ-pinenepinocarvone trans-pinocarveolsabineneα-humuleneβ-caryophyllene