Quantificação e composição química de cera epicuticular de folhas de eucalipto

This work aimed to quantify and evaluate the chemical composition of the epicuticular wax from leaves of six Eucalyptus clones (UFV01, UFV02, UFV03, UFV04, UFV05 and UFV06). The epicuticular wax was extracted and quantified and their constituents analyzed by gas chromatography coupled with a mass spectrometer, with 31 constituents being identified in the six Eucalyptus clones appraised. The analysis of the samples revealed mostly the presence of hydrocarbons. The component found in larger proportion in the clones UFV02 (36.07%), UFV03 (33.00%) and UFV06 (40.98%) was 3β-acetoxy-urs-12-en-28-al, while in the clones UFV01 (17.80%), UFV04 (11.38%) and UFV05 (17.62%) the component found in larger proportion was hexacosane. The clones UFV02 and UFV04 presented the most variety of chemical components (19 components).