Table 3.

Correlation coefficients (r) between antioxidant activity values and phenolic contents.

Assay	Antioxidant Activity Method
	FRAP	DPPH	ABTS	NBT	TBARS
TP	0.952	−0.997	−0.999	−0.970	0.930
TPA	0.932	−0.900	−0.999	−0.983	0.951
TF	0.731	−0.866	−0.922	−0.981	0.998
TPC	0.886	−0.968	−0.992	−0.997	0.979
TPC (by Folin-Ciocalteu)	0.968	−0.999	−0.995	−0.954	0.908
FRAP	-	−0.974	−0.938	−0.849	0.774
DPPH	−0.974	-	0.992	0.947	−0.897
ABTS	−0.938	0.992	-	0.980	−0.946
NBT	−0.849	0.947	0.980	-	−0.992
TBARS	0.774	−0.897	−0.946	−0.992	-

TP-total phenylethanoids, TPA-total polyphenolic acid, TF-total flavonoids, TPC-total phenolic compound.