... discovered in 1936 by Professor Jacques Masquelier and called Vitamin P, although this name did not gain official category status and ... proanthocyanidin fraction and peroxyl radical scavenging values (r = 0.86, P < 0.10).A moderate drink (1 drink per day, about ... OPCs, while a 5 ounce serving of red wine averages 91 milligrams.Many other foods and beverages also contain high amounts ...