Table 1.

EC₅₀ values in moles of antioxidant (resveratrol and caffeic acid) per mol of DPPH obtained at reaction times of 5, 15, 30 and 60 min.

Antioxidant	t = 5 min	t = 15 min	t = 30 min	t = 60 min
RES	0.9080	0.6991	0.5991	0.5256
CA	0.3016	0.2791	0.2775	0.2843