Department of Enology, Hochschule Geisenheim University, Von-Lade-Straße 1, 65366 Geisenheim, Germany.
Department of Microbiology and Biochemistry, Hochschule Geisenheim University, Von-Lade-Straße 1, 65366 Geisenheim, Germany.
Food Chem. 2018 Dec 1;268:463-467. doi: 10.1016/j.foodchem.2018.06.118. Epub 2018 Jun 23.
The possibility of 2,4,6-trichloroanisole (TCA) migration through synthetic stoppers and into wine from highly contaminated air was shown by several authors. However, those experiments were usually conducted without bottle capsules, which are a common part of wine packaging. In the current study, we demonstrated that the presence of capsules (without open holes) above synthetic stoppers can reduce wine contamination by airborne d-TCA by about 10 times or more. Generally, metallic capsules revealed better barrier properties than polyvinyl chloride counterparts. Application of EVOH film on the external surface of the polyvinyl chloride capsules usually resulted in a lower level of wine contamination. Additionally it was demonstrated, that relatively short exposure (3 months) of the bottles to highly contaminated air could cause a considerable absorption of d-TCA by synthetic stoppers, which can subsequently lead to wine contamination after 12 months.
空气中的 2,4,6-三氯苯甲醚（TCA）可能通过合成瓶塞迁移到葡萄酒中，这一点已被多位作者证明。然而，这些实验通常是在没有瓶帽的情况下进行的，而瓶帽是葡萄酒包装的常见部分。在当前的研究中，我们证明了在合成瓶塞上方存在（无开口）瓶帽可以将空气中 d-TCA 对葡萄酒的污染减少约 10 倍甚至更多。一般来说，金属瓶帽比聚氯乙烯瓶帽具有更好的阻隔性能。在聚氯乙烯瓶帽的外表面应用 EVOH 薄膜通常会导致葡萄酒污染程度降低。此外，研究还表明，葡萄酒瓶仅在高污染空气中暴露 3 个月，就可能导致合成瓶塞吸收相当数量的 d-TCA，随后在 12 个月后导致葡萄酒污染。
