Table 2 Correlation coefficients among quality characteristics of sweet potatoes.

	Moisture (%)	Soluble Solid (Brix)	L*	a*	b*	Hardness (kgf/cm2)	Aw
Moisture (%)	1.000
Brix	-0.369***	1.000
L*	0.002	-0.496***	1.000
a*	-0.483***	0.010	-0.170	1.000
b*	-0.131	-0.218*	0.569***	0.205	1.000
Hardness (kg/cm2)	-0.575***	0.004	0.190	0.350***	0.034	1.000
Aw	0.821***	-0.079	-0.064	-0.580***	-0.350***	-0.538***	1.000

* p<0.05, ** p<0.01, *** p<0.001