Antioxidant capacity and angiotensin I converting enzyme inhibitory activity of a melon concentrate rich in superoxide dismutase

► The TAC of SOD-MC measured by TEAC, DPPH and FRAP assays was relatively low. ► Its antioxidant potential had the highest radical-scavenging activity towards O2-. ► The antioxidant potential of SOD-MC could be mainly due to its high level of SOD. ► An ACE inhibitory activity of SOD-MC (IC50 = 2.4 ± 0.1 mg/mL) was demonstrated. ► Its use as functional food ingredient may have important public health implications.