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Lecture+11.++Wooden+Cooperage

Lecture+11.++Wooden+Cooperage - UNIVERSITY OF CALIFORNIA...

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UNIVERSITY OF CALIFORNIA Department of Viticulture and Enology VEN 135 WINE TECHNOLOGY AND WINERY SYSTEMS 11. WOODEN COOPERAGE Wooden cooperage is commonly used for the storage and/or aging of wines. The cooperage can vary from the widely used 210 L (approx. 55 gal) barrels to ovals which may hold up to 1000-2000 L and on to larger "uprights" of up to 60000 L. The wood is usually from one of the oak species, either European or American, or redwood for some of the large upright cooperage. The reasons for using the wood containers are primarily for the extraction of flavor components and for a partial and limited oxidation over the period of several months. The rate (and hence extent) of the extraction depends on the area per unit volume of the cooperage and the degree to which it has been previously extracted. AREA PER UNIT VOLUME The area per unit volume diminishes inversely with the diameter for a given geometry and so for maximum extraction the smallest diameter would be preferred. The
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