Is Airborne 2,4,6-Trichloroanisole (TCA) a Threat for Bottled Wine?

Table 1

Permeation of the airborne TCA by bottle closures. Analysis of wine (yes/no indicates that d₅-TCA was/was not detected in the wine after bottle storage in the contaminated atmosphere).

		Bottle stoppers (closures)
		Natural; corks	Technical/agglom.; corks	Synthetic; stoppers	BVS screw; caps
Storage conditions: d5-TCA concentration; in air/storage time	1080 ng^1/36–44 months [28]	No	No	—	—
	32 µg/L/3–24 months [29]	No	No	Yes	—
	1.75 μg/L/1–30 months [30]	No	No	Yes	Yes
	≈400 ng/L/3–15 months [31]	—	—	Yes	—

¹Amount of d₅-TCA in solution applied on the top of the stoppers.