TY - JOUR T1 - Permeation of d<sub>5</sub>-2,4,6-Trichloroanisole via Vapor Phase through Different Closures into Wine Bottles JF - American Journal of Enology and Viticulture JO - Am. J. Enol. Vitic. SP - 245 LP - 249 DO - 10.5344/ajev.2010.10098 VL - 62 IS - 2 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 Y1 - 2011/06/01 UR - http://www.ajevonline.org/content/62/2/245.abstract N2 - This study examined the sealing effectiveness of different closures on 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 closure fractions (outer, middle, and inner) were assessed over time for the concentration of releasable d5-TCA by SPME-GC-MS. During 24 months of storage, high concentrations 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. ER -