Comparative Study of the Flavonoid Content in Radix Scutellaria from Different Cultivation Areas in China

Table 9

Mean IC₅₀ values for two free radicals and HepG2 from different growing areas.

Cultivated areas	IC50 (μg/mL)
	DPPH	ABTS	HepG2
Gansu	102.804 ± 0.202	35.540 ± 0.246	346.852 ± 3.612
Inner Mongolia	134.192 ± 0.084	55.600 ± 0.130	415.080 ± 4.183
Shandong	178.275 ± 0.056	89.140 ± 0.069	477.990 ± 4.362
Shanxi	211.619 ± 0.157	59.883 ± 0.120	408.828 ± 3.118
Henan	124.980 ± 0.310	57.850 ± 0.393	389.814 ± 2.119
Hebei	125.602 ± 0.539	39.022 ± 0.276	420.717 ± 4.478
Shaanxi	149.993 ± 0.187	47.328 ± 0.126	445.950 ± 2.712