Prediction of infinite dilution volatilities of aroma compounds in water

The prediction of infinite dilution volatilities (Henry's law constants) of aroma compounds is examined. At 25 degreesC, the Bond Contribution model i s recommended. At other temperatures where the Bond Contribution model cann ot be used, the Kow-UNIFAC group contribution model, coupled with either ex perimental or predicted by the Antoine-Grain model vapor pressure values, p rovides estimates only of the volatilities with errors in the range of 20% to 40%. Finally, the effect of a cosolvent (ethanol) on the infinite diluti on volatilities of some aroma compounds is examined.