Corpus ID: 87131178

Proanthocyanidins from Ribes nigrum leaves

@inproceedings{Tits1992ProanthocyanidinsFR,
  title={Proanthocyanidins from Ribes nigrum leaves},
  author={M. Tits and P. Poukens and L. Angenot},
  year={1992}
}
We described hère a TLC fïngerprint of flavan-3ols and oligomeric proanthocyanidins présent in blackcurrant leaves extracts. Thèse products can be separated by silicagel (HP) TLC using single development with thé upper phase of thé mixture of 2 volumes of acetic acid, 3 volumes of formic acid, 20 volumes of water and 70 volumes of ethyl acétate. The visualization was performed by spraying with vanillin-HCl reagent ( l).The flavan-3ols monomers and polymère afford a red colour immediatly on… Expand