Estudo comparativo dos óleos voláteis de algumas espécies de Piperaceae

Abstract

“Comparative study of the essential oils of some species of Piperaceae”. Essential oils from various vegetal species of the Piperaceae family were analysed by Capillary Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS). The investigated species were: Piper aduncum, P. amalago, P. arboreum, P. cernuum, P. hispidum, P. regnelii, P. submarginalum, P. vicosanum and Pothomorphe umbellata. Over 80% of the essential oils compounds were identifi ed by the qualitative and quantitative analysis. The analysed species showed the predominance of sesquiterpenoids, except for P. hispidum, P. submarginalum and P. vicosanum in which the predominant compounds were monoterpenoids. For the 9 studied species, the major compounds found in the oils were β-pinene (9/9) and spathulenol (9/9), followed by the E-caryophyllene (8/9), caryophyllene oxide (8/9), germacrene D (7/9), α-pinene (7/9) and limonene (6/9).