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Keywords = Sprague interpolation

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16 pages, 2770 KB  
Article
Specification and Simplification of Analytical Methods to Determine Wine Color
by Marcel Hensel, Sarah Di Nonno, Yannick Mayer, Marina Scheiermann, Jörg Fahrer, Dominik Durner and Roland Ulber
Processes 2022, 10(12), 2707; https://doi.org/10.3390/pr10122707 - 15 Dec 2022
Cited by 7 | Viewed by 4805
Abstract
The color of wine is an important quality parameter essential for the first impression of consumers. The International Organization of Vine and Wine (OIV) recommends two methods to describe wine color: color calculation according to Glories and the determination of coordinates in the [...] Read more.
The color of wine is an important quality parameter essential for the first impression of consumers. The International Organization of Vine and Wine (OIV) recommends two methods to describe wine color: color calculation according to Glories and the determination of coordinates in the CIE L*a*b* color space. The measurement of wine color is often not feasible for winemakers because the required instrumentation is expensive and bulky. In this study, the influence of photometer settings on the calculated color was investigated based on 14 wines. Furthermore, the CIE L*a*b* and Glories system were compared using 56 red and 56 white wines. Photometer settings were found to influence the reproducibility of color determination. In addition, CIE L*a*b* system do not correlate in all wines with the Glories system and Glories probably provides less information about wine color. Using interpolation, CIE L*a*b* coordinates were calculated from single wavelength measurements taken by a small-sized and inexpensive portable analysis system, which could be used by winemakers in the future. Full article
(This article belongs to the Special Issue Measurement and Modelling of Food Processes)
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