Figure 1.

Proanthocyanidin oligomer length for zangrado and progrado. Oligomer length as determined by HPLC was distinctive for the two extracts, zangrado and progrado, of sangre de grado (Croton palanostigma). Short length oligomers were the main source of proanthocyanidins in zangrado, whereas progrado consisted of long chain oligomers. Results reflect mean values for each oligomer length for triplicate analysis.