Table 1.

In Vitro Reactive Oxygen Species Scavenging Activity of the Tested Compounds

	IC50 (μg/mL)
Sample	DPPH•scavenging activity	NO•scavenging activity	H2O2 scavenging activity
Berberine	1156.2±23.6a	103.33±7.59a	37.07±0.74a
Silymarin	15.91±0.89b	128.45±2.39b	30.09±0.84b
Trolox	1.54±0.15c	51.00±2.74c	152.56±0.74c

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

^abcMeans within rows sharing the same letter are not significantly different from each other (P>.05).

IC₅₀ value, the effective concentration at which 2,2-diphenyl-1-picryl-hydrazyl (DPPH^•), nitric oxide (NO^•), and hydrogen peroxide (H₂O₂) were scavenged by 50%.