. 2010 Aug 30;15(9):5971–5987. doi: 10.3390/molecules15095971

Table 3.

The r values (Pearson’s correlation coefficient) between antioxidant activities and polyphenolic contents.

	DPPH·scavenging activity	Iron chelating activity	Reducing power	Inhibition of lipid peroxidation	Total antioxidant capacity
Phenolic acids	0.9936^**	−0.3425^ns	0.9804^**	0.9017^*	0.4643^ns
Flavonoids	−0.1176^ns	0.1701^ns	−0.0947^ns	0.2621^ns	−0.0456^ns
Procyanidins	0.9638^**	−0.3703^ns	0.9732^**	0.9536^**	0.5574^ns
Total tannins	0.9923^**	−0.3548^ns	0.9772^**	0.9307^**	0.4886^ns
Total polyphenols	0.9933^**	−0.4129^ns	0.9866^**	0.9132^*	0.5625^ns

*P < 0.05; **P < 0.01; ns = not significant.