LC-QTOF-MS Analysis and Activity Profiles of Popular Antioxidant Dietary Supplements in Terms of Quality Control

Table 2

Values of Pearson’s r correlation coefficients for the antioxidant assays used.

	ABTS	ORAC	DPPH	TPC
ABTS	—	0.6142	0.5619	0.7145
ORAC	0.6142	—	0.9254	0.9576
DPPH	0.5619	0.9254	—	0.9493
TPC	0.7145	0.9576	0.9493	—

All results were statistically significant for .