Identification of new flavan-3-ol monoglycosides by UHPLC-ESI-Q-TOF in grapes and wine.

  title={Identification of new flavan-3-ol monoglycosides by UHPLC-ESI-Q-TOF in grapes and wine.},
  author={Ad{\'e}line Delcambre and C{\'e}dric Saucier},
  journal={Journal of mass spectrometry : JMS},
  volume={47 6},
Flavan-3-ol monoglycosides, having four aglycons (+)-catechin, (-)-epicatechin, (-)-epigallocatechin and epicatechin gallate monomeric units, are detected for the first time in Vitis vinifera L. cv. Merlot grape seeds and wine. These compounds were analyzed in red wine, seed and skin extracts by electrospray ionization quadrupole time of flight mass spectrometry (MS) in negative mode. Fragment ions derived from retro-Diels Alder, heterocyclic ring fragmentation, benzofuran forming fragmentation… CONTINUE READING
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