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

Table 3

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

Concentration (mg/mL)	% Superoxide radical scavenging
	ECE	AA
0.010	12.18 ± 2.91	11.82 ± 1.06
0.025	18.11 ± 2.22	16.71 ± 1.73
0.050	30.29 ± 2.91	28.86 ± 1.42
0.075	46.40 ± 1.34	42.42 ± 3.13
0.100	57.37 ± 5.01	51.30 ± 2.99
IC50	0.083 mg/mL	0.096 mg/mL

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