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Prediction of Infinite Dilution Volatilities of Aroma Compounds in Water
Author(s) -
Voutsas E.C.,
Andreou C.I.,
Theodorou D.G.,
Tassios D.P.
Publication year - 2001
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2001.tb16127.x
Subject(s) - unifac , dilution , aroma , chemistry , activity coefficient , thermodynamics , vapor pressure , group contribution method , chromatography , organic chemistry , food science , physics , phase equilibrium , aqueous solution , phase (matter)
The prediction of infinite dilution volatilities (Henry's law constants) of aroma compounds is examined. At 25 °C, the Bond Contribution model is recommended. At other temperatures where the Bond Contribution model cannot be used, the Kow‐UNIFAC group contribution model, coupled with either experimental or predicted by the Antoine‐Grain model vapor pressure values, provides estimates only of the volatilities with errors in the range of 20% to 40%. Finally, the effect of a cosolvent (ethanol) on the infinite dilution volatilities of some aroma compounds is examined.