Proanthocyanidin A2 purification and quantification of American cranberry (Vaccinium macrocarpon Ait.) products

► Phytochemicals of commercial cranberry products were evaluated. ► Anthocyanins and proanthocyanidins were determined in samples. ► Purification method selection should be carefully considered. ► Products had an eleven-fold difference in proanthocyanidin content. ► One commercial juice had an unusual anthocyanin profile.