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oai:gredos.usal.es:10366/1454862025-04-30T19:49:39Zcom_10366_4182com_10366_4055com_10366_3946com_10366_3823com_10366_137251com_10366_4512col_10366_4183col_10366_137252

Gordillo, Belén Rodríguez-Pulido, Francisco J. González-Miret, M. Lourdes Quijada Morín, Natalia Rivas Gonzalo, Julián C. García Estévez, Ignacio Heredia, Francisco J. Escribano Bailón, María Teresa 2021-03-03T10:39:07Z 2021-03-03T10:39:07Z 2015 Gordillo, B ; Rodríguez Pulido, F.J. [et al.] (2015). Application of Differential Colorimetry To Evaluate Anthocyanin− Flavonol−Flavanol Ternary Copigmentation Interactions in Model Solutions. Journal of Agricultural and Food Chemistry, 63(35), pp. 7645-7653. doi: 10.1021/acs.jafc.5b00181 0021-8561 http://hdl.handle.net/10366/145486 10.1021/acs.jafc.5b00181 1520-5118 [EN] The combined effect of anthocyanin−flavanol−flavonol ternary interactions on the colorimetric and chemical stability of malvidin-3-glucoside has been studied. Model solutions with fixed malvidin-3-glucoside/(+)-catechin ratio (MC) and variable quercetin-3-β-D-glucoside concentration (MC+Q) and solutions with fixed malvidin-3-glucoside/quercetin-3-β-D-glucoside ratio (MQ) and variable (+)-catechin concentration (MQ+C) were tested at levels closer to those existing in wines. Color variations during storage were evaluated by differential colorimetry. Changes in the anthocyanin concentration were monitored by HPLC-DAD. CIELAB color-difference formulas were demonstrated to be of practical interest to assess the stronger and more stable interaction of quercetin-3-β-D-glucoside with MC binary mixture than (+)-catechin with MQ mixture. The results imply that MC+Q ternary solutions kept their intensity and bluish tonalities for a longer time in comparison to MQ+C solutions. The stability of malvidin-3-glucoside improves when the concentration of quercetin-3-β-D-glucoside increases in MC+Q mixtures, whereas the addition of (+)-catechin in MQ+C mixtures resulted in an opposite effect. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Ternary copigmentation Malvidin-3-glucoside (+)-catechin Quercetin-3-β-D-glucoside Differential colorimetry Application of Differential Colorimetry To Evaluate Anthocyanin–Flavonol–Flavanol Ternary Copigmentation Interactions in Model Solutions info:eu-repo/semantics/article