Relevance and Standardization of In Vitro Antioxidant Assays: ABTS, DPPH, and Folin–Ciocalteu

Table 4

The values of Pearson correlation coefficient for correlation among AOPs of investigated antioxidants determined in all variants of ABTS, DPPH, and FC assays.

Sample	CA	CGA	GA	CTH	EGCG	AA	DHA
CGA	0.96
GA	−0.43	−0.32
CTH	0.72	0.77	0.26
EGCG	0.56	0.55	0.35	0.74
AA	0.67	0.81	−0.31	0.55	0.07
DHA	0.79	0.90	−0.37	0.61	0.18	0.98
Trolox	0.76	0.83	−0.51	0.52	0.15	0.90	0.91

Values are significant at the α =0.001 level; values are significant at the α =0.01; values are significant at the α =0.05 level.