Table 4.

Coefficient of regression for dependent variables of corn and green BF extrudates

Terms	Expansion ratio	WAI	WSI
Constant	2.36042	3.52458	35.2508
BF	0.0805**	−0.35**	9.6805**
SS	−0.01	0.14833**	−1.9108*
Ext. temp.	0.07625**	0.05125	1.7856*
BF × BF	0.02625	−0.16125*	3.8888*
Ext. temp. × Ext. temp.	−0.0525**	−0.06	−2.5169
BF × SS	0.0095	0.147*	0.067
BF × Ext. temp.	0.4875**	−0.021	0.0986
SS × Ext. temp	0.0075	0.04625	−2.0831*
R2 (%)	94.2	86.3	91.0

*p ≤ 0.05; **p ≤ 0.005