The higher concentration of polymeric pigments in wines made from high anthocyanin fruit in this study demonstrates the impact of anthocyanin on the formation of polymeric pigments, however, the contribution of nPPP and PPP to wine aging is unclear. In contrast to this study, an earlier study observed proportionally more PPP rather than nPPP in Cabernet Sauvignon after 3 years of bottle aging (Adams, Harbertson, & Picciotto, 2004).