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- W4247007603 abstract "Grapefruit flavedo (Citrus paradisi Macf.) was extracted by different methods: hydrodistillation; and solvent extraction using pentane, ethanol and supercritical carbon dioxide (SC-CO2) at two fluid densities. The composition of the distillates and oleoresins were compared. Monoterpene hydrocarbons decrease in SC-CO2 extracts at 87–90% with respect to their quantity in pentane extracts (95%) and in hydrodistillates (97%); these levels in monoterpene hydrocarbons were related to the limonene content, the most representative compound in grapefruit essence. Sesquiterpenes, aldehydes, alcohols and esters increased their GC area percentage in SC-CO2 extract at a high density of the solvent, with respect to the hydrodistillate and the pentane extract. Very interesting was the high increase in nootkatone concentration in the SC-CO2 extracts; this grapefruit essence component was 4.72% in the extract at 8 MPa, and it was 5.19% in that at 25 MPa; the ketone was very low in the hydrodistillates (0.22–0.26%). The monoterpene hydrocarbon concentrations, expressed as g of component in 100 g of extract, showed a decrease in SC-CO2 oleoresins. Oxygenated, sesquiterpenes and particularly nootkatone increase their amount in SC-CO2 extracts. © 1998 John Wiley & Sons, Ltd." @default.
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- W4247007603 date "1998-03-01" @default.
- W4247007603 modified "2023-09-23" @default.
- W4247007603 title "Supercritical carbon dioxide (SC-CO2) extraction of grapefruit flavedo" @default.
- W4247007603 doi "https://doi.org/10.1002/(sici)1099-1026(199803/04)13:2<125::aid-ffj708>3.3.co;2-r" @default.
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