Occurrence of anthocyanin-derived pigments in red wines |
| |
| Authors: | Mateus N Silva A M Vercauteren J de Freitas V |
| |
| Institution: | Centro de Investiga??o em Química, Departamento de Química do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal. |
| |
| Abstract: | Several anthocyanin-derived pigments that showed UV-visible spectra different from those of the original grape anthocyanins were detected by HPLC-DAD analysis in 1-year-old bottled Port wines from the Douro region. Among these, three malvidin 3-glucoside derived pigments were detected in large amounts, representing approximately 60% of the total anthocyanidin monoglucosides content. These pigments were isolated, purified, and identified by LSI-MS and NMR ((1)H, DQF-COSY, ROESY, HSQC, and HMBC) techniques. The major pigment is malvidin 3-glucoside pyruvic adduct, previously characterized, and the other two corresponded to its respective acetyl and coumaroyl glucoside derivatives. The latter is reported for the first time in red wines. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
