Aqueous methanol (800 mL/L) was added to peach pieces; they
were homogenized with ultra-turrax for 2 min (IKA Ultra-turrax
T18, Wilmington, USA) and left under 300 rpm agitation for
30 min at room temperature. The slurry was centrifuged (4000 g,
10 min, 4 C) to remove debris. The supernatant was analysed for
water-soluble antioxidant activity and total phenolics. A 15-mL
aliquot of the extract was evaporated to dryness in a RVC 2e18