| Abstract
| - Three newly formed Port wine pigments were isolated by Toyopearl HW-40(s) gel chromatographyand semipreparative HPLC. Furthermore, the pigments were identified by mass spectrometry (LC/MS) and NMR techniques (1D and 2D). These anthocyanin-derived pigments showed UV−visiblespectra different from those of the original grape anthocyanins. These pigments correspond to malvidin3-glucoside linked through a vinyl bond to either (+)-catechin, (−)-epicatechin, or procyanidin dimerB3 [(+)-catechin-(+)-catechin]. NMR data of these pigments are reported for the first time. Keywords: Red wine; flavanol; aging; pigments; anthocyanins; NMR; mass spectrometry
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