Table 4.

Correlation matrix (Pearson’s correlation coefficients) showing the interrelation between quantitative determinations in the Strawberry tree and Manuka honeys ^a.

Variable	TPC	TFC	FRAP	TEAC	DPPH	Protein
TFC	0.856 *
FRAP	0.663 *	0.878 **
TEAC	0.870 **	0.678 *	0.586 ns
DPPH	0.678 *	0.796 **	0.807 **	0.704 **
Protein	0.863 **	0.817 *	0.660 *	0.923 **	0.772 **
Free AA	0.728 *	0.740 *	0.694 *	0.899 *	0.922 **	0.947 **

TPC: Total phenolic content; TFC: Total flavonoid content; FRAP: ferric reducing antioxidant power assay; TEAC: Trolox equivalent antioxidant capacity assay; DPPH: Diphenyl-1-picrylhydrazyl assay; Free AA: Free amino acid. ^a 95% confidence interval, * Significant at p ≤ 0.05, ** Significant at p ≤ 0.01, ^ns non significant.