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oai:riubu.ubu.es:10259/42722022-12-20T10:59:12Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Activity coefficients at infinite dilution of volatile compounds in water: effect of temperature and salt concentration Martínez Velasco, Rodrigo Sanz Díez, Mª Teresa Beltrán Calvo, Sagrario Corcuera Tecedor, Elena aroma compounds activity coefficients at infinite dilution salt effect temperature effect Ingeniería química Chemical engineering Activity coefficients at infinite dilution in water have been determined for some aroma compounds detected in brown crab liquid effluent produced during boiling (1-octen-3-ol, 1-penten-3-ol, 3-methylbutanal, hexanal, benzaldehyde, 2,3-pentadione, and ethyl acetate) by using the headspace gas chromatography technique (HSGC). Experimental data have been obtained over the temperature range of (40 to 50) °C. In this work, activity coefficients at infinite dilution for different kinds of systems have been considered: one component solute + water and multicomponent solute + water. No significant differences were observed between activity coefficients obtained in these two kinds of systems. Additionally the effect of salt concentration at 40 °C has been studied by varying the salt concentration from (0 to 1.71) mol·kg−1. Experimental data were fitted as a function of salt concentration by using the Setschenow equation, obtaining the salting-out coefficient. MICINN through CTQ2008-04999-PPQ 2016-11-17T11:32:07Z 2016-11-17T11:32:07Z 2012-05 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0021-9568 http://hdl.handle.net/10259/4272 10.1021/je2013878 eng Journal of Chemical and Engineering Data. 2012, V. 57, n. 5, p 1480–1485 http://dx.doi.org/10.1021/je2013878 info:eu-repo/grantAgreement/MICINN/CTQ2008-04999-PPQ info:eu-repo/semantics/openAccess application/pdf American Chemical Society