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

Table 4

Correlation analysis of antioxidant components and activities.

Factors^a	ABTS	DPPH	TP	Homogentisic acid	Salicylic acid	Kaempferol	ROS
ABTS	1.000	−0.127	−0.921	−0.764	−0.975	−0.0968	0.929
DPPH		1.000	0.326	−0.056	0.255	0.300	−0.469
TP			1.000	−0.489	0.979	−0.982	−0.949
Homogentic acid				1.000	−0.656	−0.641	0.637
Salicylic acid					1.000	−0.999	−0.965
Kaempferol						1.000	−0.976
ROS							1.000

^aFactors: ABTS and DPPH was analyzed by IC₅₀ value; TP, total contents of phenolic compounds; ROS, intracellular reactive oxygen species. Significance was determined using SPSS by Pierson’s correlation coefficient; and .