Table 4.
Pigments identified with HPLC-DAD-ESI/MS with DAD signal at 525nm.
| Compound | tR (min) |
[M]+
m/z |
Fragment m/z |
λ max-vis (nm) |
Reference |
|---|---|---|---|---|---|
| Malvidin-3-O-glucoside-epicatechin | 12.9 | 781 | 619 | 530 | [34] |
| Unidentified Peak 1 | 13.4 | 679 | - | 514 | |
| Malvidin-3-O-glucoside-4-vinyl-diepicatechin | 13.9 | 931 | - | 533 | [32] |
| Malvidin-3-O-glucoside-ethyl-epicatechin | 14.2 | 809 | - | 538 | [34] |
| Unidentified Peak 2 | 14.3 | 995 | 782 | 538 | |
| Malvidin-3-O-(6-p-coumaroylglucoside)-8-ethyl-(epi)catechin | 14.5 | 954 | 852 | 520 | [34] |
| Malvidin-3-O-glucoside-8-ethyl-epicatechin | 14.6 | 809 | 643 | 542 | [32] |
| Malvidin-3-O-glucoside-4-vinyl-epicatechin | 14.9 | 805 | 331 | 540 | [36] |
| Malvidin-3-O-glucoside-8-ethyl-catechin | 15.3 | 809 | 643 | 538 | [34] |
| Diepicatechin-malvidin-3-O-glucoside | 16.2 | 1069 | 619 | 506 | [34] |
| Unidentified Peak 3 | 17.3 | 829 | 691 | 512 |
(tR) retention time; ([M]+) molecular ion; (λ) maximum absorption wavelength.