The lack of antioxidant capacity of rutin at this pH (3.7) originated that the antioxidant capacities of CAE and CAE + R juices were the same. Due to this fact any synergic effects between anthocyanins and rutin have been investigated at this pH. However other previous antioxidant capacity studies with individual and combined phenolics (chlorogenic acid, cyanidin 3-glucoside, quercetin 3-glucoside, catechin, …) in a model system, reported the lack of a synergistic effect (Heo et al., 2007)