The performance of liners for retail wine casks

Autor:	E. G. Davis
Rok vydání:	2007
Předmět:	Wine Oxygen permeability Materials science Polydimethyl siloxane food and beverages Permeation Pulp and paper industry Oxygen uptake Industrial and Manufacturing Engineering Food Science
Zdroj:	International Journal of Food Science & Technology. 13:235-241
ISSN:	1365-2621 0950-5423
Popis:	Summary Properties of flexible film liners and valves used in wine casks were studied to assess their influence on the loss in quality of wine retailed locally in this type of package. Oxygen permeability measurements were made at 25°C and 75% r.h. on two types of liner materials and three types of valves. A procedure involving treatment of the valve sealing surfaces with polydimethyl siloxane was developed to test valves under simulated conditions of use. Application of these results to an analytical model of a wine pack suggested that the rate of oxygen uptake by wine may be as high as 0.17 ppm/day and that the valves contributed 33–52% of this amount. Theoretical considerations demonstrate that loss of SO2 from the model by permeation was negligible.
Databáze:	OpenAIRE
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