Metoda OSC-DMAC (4-dimetilaminocinamaldehid) (Ocean Spray Cranberries, Inc) Martin MA, Ramos S, Mateos R, Marais JPJ, Bravo-Clemente, L, Khoo C i Goya L. Food Res Intl 2015 71: 68-82.
Multi-laboratory validation of a standard method for quantifying proanthocyanidins in cranberry powders.