Figure 5.
HPCCC chromatogram at a wavelength of λ 320 nm of the copigment fraction of the red grape JC sample and HPLC-ESI-MS/MS chromatograms indicating the composition of each fraction.
| Peak | Compound | Peak | Compound | Peak | Compound |
| C1 | coumaroyl derivative | C8 | quercetin-3-galactoside | C15 | unknown |
| C2 | unknown | C9 | quercetin-3-glucoside | C16 | protocatechuic acid |
| C3 | coumaroyl-hexoside I | C10 | quercetin derivative | C17 | resveratrol |
| C4 | coumaroyl-hexoside II | C11 | quercetin-3-glucuronide | C18 | coumaric acid |
| C5 | isorhamnetin-3-hexoside | C12 | gallic acid | C19 | syringic acid |
| C6 | caftaric acid | C13 | coutaric acid | C20 | epicatechin |
| C7 | resveratrol-3-glucoside (piceid) | C14 | fertaric acid |