2.3.9. Antioxidant capacity
The antioxidant capacity was measured by the phosphomolybdenum method according to Prieto, Pineda, and Aguilar (1999). Briefly, one mL of fruit extract was combined with 1 mL of reagent solution (0.6 mol L−1sulfuric acid, 28 mmol L−1 sodium phosphate, and 4 mmol L−1 ammonium molybdate). The tubes were incubated at 95 °C for 90 min. The absorbance of the solution was measured at 695 nm against a blank sample. A standard curve with ascorbic acid was prepared and total antioxidant capacity was expressed as mmol of ascorbic acid per kilogram.