For superoxide dismutase (SOD, EC 1

For superoxide dismutase (SOD, EC 1.15.1.1) and O2−production, 1 g of flesh tissue was ground with 5 ml of 50 mM sodium phosphate buffer (pH 7.8). For catalase (CAT, EC 1.11.1.6) and ascorbate peroxidase (APX, EC 1.11.1.11), fruit tissue (1 g) was homogenized with homogenized with 5 ml of 50 mM sodium phosphate buffer (pH 7.0). One gram sample was extracted with 5 ml of 100% acetone and then centrifuged at 12,000 × g for 10 min at 4◦C for H2O2content