Journal of Agricultural and Food Chemistry · 2002 · 196 citations · 28 references
AgricultureBiochemistryEnologyWine AnalysisWine AuthenticationWine ChemistryColor AnalysisPhenolic Compound AnalysisPhenolic Compounds In WinePhenolic Profile AnalysisTannin AnalysisWine Composition AnalysisAnthocyanin ChemistryAnthocyanin DerivativesPigmentsRed Wine Color ChemistryWine Phenolic CompositionWine Pigment Chemistry
Three new Port wine pigments were isolated by gel chromatography and semipreparative HPLC and identified using LC/MS and 1D/2D NMR. These pigments exhibit distinct UV‑visible spectra and are identified as malvidin 3‑glucoside linked via a vinyl bond to catechin, epicatechin, or procyanidin dimer B3, with their NMR spectra reported for the first time.
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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The flavonoids advances in research since 1986:
Margaret Roberts · Phytochemistry · 1994 · 1.6K citations
The polymeric nature of wine pigments
T. C. Somers · Phytochemistry · 1971 · 566 citations
Agriculture, Chemistry, Viticulture +14