PT - JOURNAL ARTICLE AU - Paulo Lopes AU - Juliana Marques AU - Tânia Lopes AU - José Lino AU - Joaquim Coelho AU - Cátia Alves AU - Isabel Roseira AU - Adélio Mendes AU - Miguel Cabral TI - Permeation of d<sub>5</sub>-2,4,6-Trichloroanisole via Vapor Phase through Different Closures into Wine Bottles AID - 10.5344/ajev.2010.10098 DP - 2011 Feb 23 TA - American Journal of Enology and Viticulture PG - ajev.2010.10098 4099 - http://www.ajevonline.org/content/early/2011/02/23/ajev.2010.10098.short 4100 - http://www.ajevonline.org/content/early/2011/02/23/ajev.2010.10098.full AB - This study outlines the results from an experiment to find evidence of the sealing effectiveness of different closures towards the permeation of exogenous compounds when bottled wine model solutions were stored in a contaminated environment with deuterium-labeled 2,4,6-trichloroanisole (d5-TCA). Wine model solutions and closures fractions (outer, middle and inner) were assessed over time for the concentration of releasable d5-TCA by SPME-GC-MS. During the 24 months of storage, large amounts of d5-TCA were essentially retained in the outer portions of natural and microagglomerate corks. Under the conditions of this experiment, the natural and microagglomerate cork stoppers were effective barriers to the transmission of exogenous contaminants. Conversely, d5-TCA penetrated synthetic closures and contaminated the wine.