Fig. 1 The antioxidant properties of the effect of Gaillardia aristata flower extract (GAE). Radical scavenging activity was determined using different
concentrations of GAE (25, 50, 100, 200, and 500 μg/mL) or vitamin C and trolox by DPPH (a) and ABTS+ (b). The effect of GAE was
confirmed by measurement of reducing capacity (c) and total phenolic contents (d). Data are mean ± standard deviation. **p < 0.01
compared with the vehicle-treated group (n = 3)