Skip to Main content Skip to Navigation
Journal articles

Sorption and diffusion properties of volatile phenols into cork

Abstract : The sorption and diffusion properties of seven common volatile phenols in hydro-alcoholic medium placed in contact with natural cork were investigated to determine the influence of cork closures on the concentration of these compounds in wine. Weighted cork samples were immersed in model wine solutions containing selected concentrations of each compound and were sampled over time. Sorption coefficients ranged between 125 and 306 mg of aroma compound per kg of cork, while diffusion coefficients varied from 0.8 to 4.1 × 10−11 m2/s. Sorption isotherms of guaiacol and 4-propylguaiacol, respectively, the lowest and highest sorbed compounds of an homologous series of guaiacol, accurately fit Henry’s model. Hydrophobicity of aroma compounds seems to be a determining factor in both diffusion and sorption. This could indicate a preferential pathway for diffusion through suberin, the more hydrophobic constituent of cork.
Document type :
Journal articles
Complete list of metadatas

https://hal-agrosup-dijon.archives-ouvertes.fr/hal-02510859
Contributor : Admin Agrosupdijon <>
Submitted on : Wednesday, March 18, 2020 - 11:24:13 AM
Last modification on : Thursday, March 19, 2020 - 1:00:29 AM

Identifiers

Citation

Thomas Karbowiak, Anna Katharine Mansfield, V. Daniela Barrera-García, David Chassagne. Sorption and diffusion properties of volatile phenols into cork. Food Chemistry, Elsevier, 2010, 122 (4), pp.1089-1094. ⟨10.1016/j.foodchem.2010.03.089⟩. ⟨hal-02510859⟩

Share

Metrics

Record views

329