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Am. J. Enol. Vitic. 38:2:139-142 (1987)
Copyright © 1987 by the American Society for Enology and Viticulture.
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Ultrafiltration and Deep-Bed Filtration of a Red Wine: Comparative Experiments

A. Cattaruzza 1, C. Peri 1, and M. Rossi 1

1 Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, University of Milan, via Celoria 2, 20133 Milano, Italy.

This study compares the effects of ultrafiltration (UF) and deep-bed filtration through sterilizing filter sheets on the composition and stability of a red wine. UF reduces by ca 70% the total colloids content of wine, while filtration through filter sheets has almost no such effect. UF also reduces by 20% the total phenolics content, which filter sheets reduce by only 10%. In spite of these differences, the UF permeate and the filter sheets filtrate are very similar in clarity and in stability to an accelerated maderization test. Submitted on June 13, 1986






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Copyright © 1987 by the American Society for Enology and Viticulture.