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Título : Activity coefficients at infinite dilution of volatile compounds in water: effect of temperature and salt concentration
Autor : Martínez, Rodrigo
Sanz Díez, Mª Teresa
Beltrán Calvo, Sagrario
Corcuera Tecedor, Elena
Publicado en: Journal of Chemical and Engineering Data. 2012, V. 57, n. 5, p 1480–1485
Editorial : American Chemical Society
Fecha de publicación : may-2012
ISSN : 0021-9568
DOI: 10.1021/je2013878
Resumen : 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.
Palabras clave: aroma compounds
activity coefficients at infinite dilution
salt effect
temperature effect
Materia: Ingeniería química
Chemical engineering
URI : http://hdl.handle.net/10259/4272
Versión del editor: http://dx.doi.org/10.1021/je2013878
Aparece en las colecciones: Artículos BIOIND

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