Sealing effectiveness of different types of closures towards volatile phenols and haloanisoles

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Bruno Pereira (Author) Other; Paulo Lopes (Author) Other; Juliana Marques (Author) Other; Maria Pimenta (Author) Other; Cátia Alves (Author) Other; Isabel Roseira (Author) Other; Adélio Mendes (Author) FEUP; Miguel Cabral (Author) Other

Journal

Title: Journal International des Sciences de la Vigne et du Vin

Vol. 47 No. 2

ISSN: 1151-0285

Publisher: Vigne et Vin Publications Internationales

Indexing

ISI Web of Knowledge - 3 Citations

ISI Web of Science

Scopus - 6 Citations

Scientific classification

FOS: Engineering and technology

Associated Projects

UI0511 - PROJECTO ESTRATÉGICO - UI 511 - 2013-2014

Other information

Authenticus ID: P-006-CBF

Abstract (EN): Aim : To determine if aerial contamination can induce the migration of volatile compounds through wine closures after bottling. Methods : and results: Bottled white wines sealed with cork stoppers (natural and microagglomerate), synthetic closures and screw caps were stored under an environment contaminated with three deuterium-labeled compounds : (d(5))-2,4,6-trichloroanisole (d(5)-TCA), (d(4))-4-ethylphenol (d(4)-E4P) and (d(5))-4-ethyleuaiacol (d(5)-E4G). Wines, closure sections (outer, middle and inner) and screw cap liner were assessed over time for the concentration of different compounds by solid phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS). The results collected during 30 months of storage showed that large amounts of all compounds were essentially retained in the outer portion of cylindrical closures, both cork and synthetic. However, these compounds were able to penetrate through synthetics and screw caps and contaminate the wine. Conclusion : Cork stoppers have proven to be an effective barrier to the migration of aerial volatile compounds such as d(5)-TCA, d(4)-E4P and d(5)-E4G, whereas permeable closures such as synthetic and screwcap saranex did allow the migration of those compounds into bottled wines. Significance and impact of the study : This study provides practical information about the sealing properties of different closures for a sound decision-making with regard to packaging. To the best of our knowledge, this is the first report of post-bottling aerial contamination via migration of volatile compounds through wine closures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13