Antioxidant Activity and Reactive Oxygen Species (ROS) Scavenging Mechanism of Eriodictyon californium, an Edible Herb of North America

Table 2

DPPH radical scavenging activity of E. californicum extract (ECE) and ascorbic acid (AA).

Concentration (mg/mL)	% DPPH radical scavenging
	ECE	AA
0.025	07.98 ± 2.35	20.07 ± 1.09
0.050	33.60 ± 1.56	46.86 ± 1.28
0.100	59.56 ± 1.21	72.07 ± 1.01
0.200	62.08 ± 1.41	84.45 ± 0.95
0.500	80.83 ± 0.17	99.98 ± 0.87
IC50	0.071 mg/mL	0.018 mg/mL

Each value is expressed as mean ± standard deviation (n = 3); .