La couleur des vins rouges. 2e partie: mesure, origine et interprétation

The various analysis required for the measure of the red wines color are discussed and explained : absorbance at 420, 520 and 620 nm, determination of anthocyanins, p.v.p. and ionisation index. The part played in the absorbance at 520 nm by the free anthocyanins and the tannins-anthocyanins complex is investigated. The study of two red wines from two vinifications and stored in barrels for six months is carried out as an application.

Abstract licence: CC BY

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