| Autor: |
Calvo JI; Institute of Sustainable Processes (ISP), Dr. Mergelina s/n, 47071 Valladolid, Spain.; Departamento de Física Aplicada, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34004 Palencia, Spain., Asensio J; Área de Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierias Agrarias, Universidad de Valladolid, Avenida de Madrid 50, 34004 Palencia, Spain., Sainz D; Área de Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierias Agrarias, Universidad de Valladolid, Avenida de Madrid 50, 34004 Palencia, Spain., Zapatero R; Área de Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierias Agrarias, Universidad de Valladolid, Avenida de Madrid 50, 34004 Palencia, Spain., Carracedo D; Área de Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierias Agrarias, Universidad de Valladolid, Avenida de Madrid 50, 34004 Palencia, Spain., Fernández-Fernández E; Área de Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierias Agrarias, Universidad de Valladolid, Avenida de Madrid 50, 34004 Palencia, Spain., Prádanos P; Departamento de Física Aplicada, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34004 Palencia, Spain.; Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain., Palacio L; Departamento de Física Aplicada, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34004 Palencia, Spain.; Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain., Hernández A; Departamento de Física Aplicada, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34004 Palencia, Spain.; Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain. |
| Abstrakt: |
Membrane dialysis is studied as a promising technique for partial dealcoholization of white wines. The performance of three membrane processes applied for the partial dealcoholization of white wines of the Verdejo variety has been studied in the present work. Combination of Nanofiltration with Pervaporation, single step Pervaporation and, finally, Dialysis, have been applied to white wines from same variety and different vintages. The resulting wines have been chemically and sensorially analyzed and results have been compared with initial characteristics of the wines. From the results obtained, we can conclude that all procedures lead to significant alcohol content reduction (2%, 0.9% and 1.23% v / v respectively). Nevertheless, the best procedure consists in the application of Dialysis to the wines which resulted in a reasonable alcohol content reduction while maintaining organoleptic properties (only 14 consumers were able to distinguish the filtered and original wines, with 17 consumers needed to be this differences significant) and consumer acceptability of the original wine. Therefore, membrane dialysis, as a method of partial dealcoholization of white wines, has undoubted advantages over other techniques based on membranes, which must be confirmed in subsequent studies under more industrial conditions. This work represents the first application of Dialysis for the reduction of alcohol content in wines. |
