| Abstract
| - The possibility of recovering biologically active polyphenolic compounds from hydro-alcoholic mixtures, withsupercritical carbon dioxide, was investigated. In order to evaluate the viability of this fractionation step, vapor−liquid equilibrium measurements on the quaternary systems (CO2 + ethanol + water + phenolic compound =resveratrol, p-coumaric acid, quercetin-3-glucoside, and catechin) were performed at 40 °C and at (15 and 20)MPa. The separation factors for hydro-alcoholic mixtures of different compositions in water + ethanol weredetermined and compared.
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