Open AccessLa couleur des vins rouges. 2e partie : mesure, origine et interprétation
Author(s) -
Yves Glories
Publication year - 1984
Publication title -
oeno one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.516
H-Index - 13
ISSN - 2494-1271
DOI - 10.20870/oeno-one.1984.18.4.1744
Subject(s) - absorbance , chemistry , analytical chemistry (journal) , humanities , chromatography , art
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.