Procyanidins are a class of flavanols, which also go by the names proanthocyanidins, condensed tannins, oligomeric proanthocyanidins, or leukocyanidin leucoanthocyanins. Jacques Masquelier first described their lives in 1936, describing them as vitamin P. The scientific community does not officially recognize the term, and it finally fell into disuse popular. Chemically, procyanidins are the polymer chains to flavonoids catechin.
As principal vasoactive polyphenols, regular consumption of red wine, procyanidin and therefore, results in persistent suppression of endothelin-1, a vasoconstrictor protein that is related to heart disease.
Frtom:http://www.polypeptides.net/polypeptides/Polypeptide/Endothelin-1/
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