Erigeron annuus Protects PC12 Neuronal Cells from Oxidative Stress Induced by ROS-Mediated Apoptosis

Table 1

Antioxidant components, activities, and yields of EAA and EAF.

Samples^a	TPC^b (GAE mg/g)	TFC^c (QUE mg/g)	ABTS^+ (IC50, μg/mL)	DPPH (IC50, μg/mL)	Yields (%)
EAA	9.8 ± 0.1b	8.9 ± 0.6b	11.0 ± 0.6b	114.0 ± 5.4a	25.16 ± 0.86a
EAF	20.8 ± 0.1a	10.1 ± 0.1a	17.5 ± 0.6b	112.2 ± 2.9a	25.84 ± 2.29a
AA	—	—	34.1 ± 0.3a	10.2 ± 0.3b	—

^aEAA: aerial parts of Erigeron annuus; EAF: flowers of Erigeron annuus; AA: ascorbic acid. ^bTPC: total phenol contents. ^cTFC: total flavonoid contents. All values are means ± SD. Means with different letters on the same column are significantly different at by t-tests (for TPC, TFC, and yields) and Tukey’s test (for ABTS⁺ and DPPH).