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Am. J. Enol. Vitic. 41:3:232-240 (1990)
Copyright © 1990 by the American Society for Enology and Viticulture.
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Study of Color of Quaternary Mixtures of Wines by Means of the Scheffé Design

A. I. Negueruela 1, J. F. Echavarri 1, M. L. Los Arcos 1, and M. P. Lopez de Castro 1

1 Departamento Fisica Aplicada, Universidad de Zaragoza, Colegio Universitario de La Rioja, Obispo Bustamante 3, 26001 Logroño, Spain.

Standardization of the color of each non-vintage is an important duty, but color specification is difficult. In this article we investigate empirical models using Scheffé polynomials to describe color response surface for four Rioja wine mixtures. The accuracy of color response prediction is shown as color differences in CIELAB units. The color response surfaces are visualized by preparing contour plots that depict color variation over a compositional region.

Key words: blending, color, Scheffé design

Submitted on January 17, 1989






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Copyright © 1990 by the American Society for Enology and Viticulture.