Procyanidol oligomeric fractions, the processes for the...

C - Chemistry – Metallurgy – 07 – D

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C07D 311/32 (2006.01) C07G 99/00 (2009.01) A61K 31/35 (2006.01) A61K 35/00 (2006.01) C07D 311/00 (2006.01)

Patent

CA 1337565

Procyanidol oligomers almost free from monomers are obtained by subjecting the vegetal extracts (for instance from Vitis vinifera) to ultrafiltration on membranes of cut-off from 3.000 to 600, or to a selective extraction with mixtures of esters (or ethers) and aromatic hydrocarbons.

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