Identification of new oxidation markers of grape-condensed tannins by UPLC–MS analysis after chemical depolymerization

Identification of new oxidation markers of grape-condensed tannins by UPLC–MS analysis after chemical depolymerization

Model solutions of oxidized monomer/dimer mixtures of flavan-3-ol (EC/B2, EGC/B2, ECG/B2, EGCG/B2) were studied after chemical depolymerization by UPLC–MS. New oxidation markers of condensed tannins were identified. This analytical method was applied to a wine sample and most of these oxidized marke...

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Veröffentlicht in:Tetrahedron 2015-05, Vol.71 (20), p.3012-3019
Hauptverfasser: Mouls, Laetitia, Fulcrand, Hélène
Format: Artikel
Sprache:eng
Schlagworte:
Agricultural sciences
Autoxidation
Depolymerization
Life Sciences
Oxidation marker
Tannin
ULPC–MS
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Zusammenfassung:Model solutions of oxidized monomer/dimer mixtures of flavan-3-ol (EC/B2, EGC/B2, ECG/B2, EGCG/B2) were studied after chemical depolymerization by UPLC–MS. New oxidation markers of condensed tannins were identified. This analytical method was applied to a wine sample and most of these oxidized markers were detected. This method will permit following the oxidation state of tannins during the winemaking process and storage in order to improve the quality of the products. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2015.01.038