Pervaporation was used to extract aroma compounds from dilute aqueous solutions. The use of a stirred cell allowed the reduction of the boundary layer effect which can be estimated using a mass transfer correlation. A resistance-in-series model was used to describe the flux of organic compounds through a silicone membrane. Calculation of the membrane resistance required the determination of the solubility and diffusion coefficients of the aroma substances in the polymer. These two characteristics were obtained by measuring the quantities of the aroma sorbed on the silicone at equilibrium and by studying the kinetics of sorption. At low concentration ranges, both characteristics were constant. They can be related to the hydrophobicity, the molar volume and the flux of the substances through the silicone membrane during pervaporation.