Journal articles
Translational Diffusion Coefficients of Volatile Compounds in Various Aqueous Solutions at Low and Subzero Temperatures
Abstract : Translational diffusion coefficients (D(12)) of volatile compounds were measured in model media with the profile concentration method. The influence of sample temperature (from 25 to -10 degrees C) was studied on translational diffusion in sucrose or maltodextrin solutions at various concentrations. Results show that diffusivity of volatile compounds in sucrose solutions is controlled by temperature, molecule size, and the viscosity of the liquid phase as expected with the Stokes-Einstein equation; moreover, physicochemical interactions between volatile compounds and the medium are determinant for diffusion estimation. At negative temperature, the winding path induced by an ice crystal content of >70% lowered volatile compound diffusion. On the contrary, no influence on translational diffusion coefficients was observed for lower ice content.
https://hal-agrosup-dijon.archives-ouvertes.fr/hal-02303194
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Submitted on : Wednesday, October 2, 2019 - 9:45:35 AM
Last modification on : Friday, April 30, 2021 - 4:34:05 PM
Contributor : Admin Agrosupdijon Connect in order to contact the contributor
Submitted on : Wednesday, October 2, 2019 - 9:45:35 AM
Last modification on : Friday, April 30, 2021 - 4:34:05 PM
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