title: Impact of storage position on oxygen ingress through different closures into wine bottles.
abstract: Wine bottle aging is extremely dependent on the oxygen barrier properties of closures. Kinetics of oxygen ingress through different closures into bottles was measured by a nondestructive colorimetric method from 0.25 to 2.5 mL of oxygen. After 12, 24, and 36 months of storage, only the control (glass bottle ampule) was airtight. Other closures displayed different oxygen ingress rates, which were clearly influenced by the closure type and were independent of bottle storage position (upright, laid down) for most of the closures tested, at least during the first 24 months of the experiment under controlled conditions. The oxygen ingress rates into bottles were lowest in screw caps and "technical" corks, intermediate in conventional natural cork stoppers, and highest in the synthetic closures.
authors.affiliation: Faculté d'Oenologie de Bordeaux, Université Victor Segalen Bordeaux 2 UMR 1219 INRA, 351 Cours de la libération, 33405 Talence Cedex, France. pdl@net.sapo.pt
authors.forename: Paulo
authors.initials: P
authors.lastname: Lopes
authors.forename: Cédric
authors.initials: C
authors.lastname: Saucier
authors.forename: Pierre-Louis
authors.initials: PL
authors.lastname: Teissedre
authors.forename: Yves
authors.initials: Y
authors.lastname: Glories
mesh_terms: D004396:Coloring Agents; D018857:Food Packaging; D005519:Food Preservation / Q000379:methods*; D007203:Indigo Carmine; D010100:Oxygen / Q000032:analysis*; D013997:Time Factors; D014920:Wine / Q000032:analysis*
chemical_list: D004396:Coloring Agents; D007203:Indigo Carmine; D010100:Oxygen