Figure 1From: Inhibitory effects of proanthocyanidins from Ribes nigrum leaves on carrageenin acute inflammatory reactions induced in ratsChemical structure of proanthocyanidins. Where R = H, it is a procyanidin: catechin (R1 = H and R2 = OH) and epicatechin (R1 = OH and R2 = H); Where R = OH, it is a prodelphinidin: gallocatechin (R1 = H and R2 = OH) and epigallocatechin (R1 = OH and R2 = H).Back to article page