Key words: Eucalyptus viminalis Labill., supercritical fluid CO2-extract, essential oil, chemical composition, monoterpens, sesquiterpens, phenoloaldehyds, Eucaliminum, Chlorophylliptum
A phytochemical comparison of essential oil and supercritical fluid CO2- extract (SCF-NI2-extract), and analysis of residues obtained from the leaves of eucalyptus (Eucalyptus viminalis Labill.) are performed. Compositions of essential oil and SCF-CO2-extract are similar qualitatively, but significantly differ in relative amounts of their main components. SCF-CO2-extract contains substantial amounts of sesquiterpens in addition to essential oil. The residue remaining after the separation of lypophylic fraction is
found to be a source of phenoloaldehyds, which can serve as constituents of pharmaceuticals (Eucaliminum and Chlorophylli ptum). The properties of residues remaining after the SCF-CO2-extraction are more technically advantageous.