Polymeric proanthocyanidins isolated from a grape seed phenolic extract were hydrolysed
in the presence of phloroglucinol into monomer catechins and their nucleophile derivatives …

Separation of plant proanthocyanidins remains a major challenge for scientists due to the
structural diversity and complexity. In this work, a new and effective method was developed …

To develop an efficient method for degradation of grape seed and skin proanthocyanidins
polymers into oligomers, an optimized sulphurous acid degradation conditions for grape …

The purified proanthocyanidin oligomers of Cistus salvifolius herb extract accounted for 78%
of the total proanthocyanidins and 73% of the total antioxidant activity of this extract. To …

Grape seed proanthocyanidin (GSP) is a natural food antioxidant. Natural
proanthocyanidins (PC) in grape seed are usually polyhydroxy derivatives which exhibit …

This study aimed to establish an approach for preparing new representative
proanthocyanidin oligomers from persimmon for further structure− activity relationship study …

Water–acetone (3: 7) extract of sea buckthorn seeds was separated by Sephadex LH-20
column chromatography into nine fractions. Three of the fractions exhibited strong radical …

The structure of a polymeric proanthocyanidin fraction isolated from pear juice was
characterized by NMR, ESI/MS, and MALDI-TOF/MS analyses, and its antioxidant activity …

Residues such as peels and seeds that result from fruit juice production may contain
substantial amounts of valuable natural antioxidants. In order to isolate the potential …

The use of pyrogallol as trapping reagent in proanthocyanidin (PA) analysis was
investigated. PAs are antioxidants and disease-preventing agents, the efficiency of which …