Table 4.

Comparison of results from different antioxidant assays as represented by correlation coefficients.

	Variable	TPC	TFC	% inhibition	DPPH	Reducing power
Peel	TPC	1
	TFC	0.970 ***	1
	% inhibition	0.709 *	0.517ns	1
	DPPH	0.995 ***	0.989 ***	0.638 *	1
	Reducing power	0.418 ns	0.625 *	−0.343 ns	0.503 ns	1
Pulp	TPC	1
	TFC	0.320 ns	1
	% inhibition	0.385 ns	0.997 ***	1
	DPPH	0.973 ***	0.528 ns	0.586 ns	1
	Reducing power	0.934 ***	0.636 *	0.687 *	0.991 ***	1

ns: non significant; *: level of significance.