Identification of anthocyanin-flavanol pigments in red wines by NMR and mass spectrometry - PubMed (original) (raw)

. 2002 Mar 27;50(7):2110-6.

doi: 10.1021/jf0111561.

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Identification of anthocyanin-flavanol pigments in red wines by NMR and mass spectrometry

Nuno Mateus et al. J Agric Food Chem. 2002.

Abstract

Three newly formed Port wine pigments were isolated by Toyopearl HW-40(s) gel chromatography and semipreparative HPLC. Furthermore, the pigments were identified by mass spectrometry (LC/MS) and NMR techniques (1D and 2D). These anthocyanin-derived pigments showed UV-visible spectra different from those of the original grape anthocyanins. These pigments correspond to malvidin 3-glucoside linked through a vinyl bond to either (+)-catechin, (-)-epicatechin, or procyanidin dimer B3 [(+)-catechin-(+)-catechin]. NMR data of these pigments are reported for the first time.

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