The release of volatile compounds from food matrices is gov- erned by kinetic and thermodynamic phenomena . Thermodynamic factors deter- mine the partitioning of volatiles between the food and air phases under equilibrium while the kinetic phenomena influence the rate at which equilibrium is achieved and may affect the rate of perception. Intrinsic properties of the food matrix and extrinsic factors (e.g. temperature, pressure) are involved in both the release rate and the aroma concentration under equilibrium.