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Characterization of Proanthocyanidins From Grape Seeds

Characterization of Proanthocyanidins From Grape Seeds

B Gabetta, N Fuzzati, A Griffini, E Lolla, R Pace, T Ruffilli, F Peterlongo

Fitoterapia. 2000 Apr;71(2):162-75.

PMID: 10727813

Abstract:

Leucoselect (grape seed selected proanthocyanidins) was analyzed. HPLC thermospray mass spectrometry (TSP-MS) allowed the detection of monomeric flavan-3-ols and dimeric proanthocyanidins. Fractionation over Sephadex LH-20 resin and analysis of the isolated fractions by gel permeation chromatography (GPC) and electrospray mass spectrometry (ESI-MS) led to the complete characterization of the proanthocyanidin constituents of Leucoselect. The analysis revealed the presence of approximately 15% of (+)-catechin (1) and (-)-epicatechin (2), 80% of (-)-epicatechin 3-O-gallate (3), dimers, trimers, tetramers and their gallates and 5% of pentamers, hexamers, heptamers and their gallates.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42410448	(±)-Epicatechin-2,3,4-13C3 gallate			Price

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