. 2018 Jun 19;55(9):3462–3472. doi: 10.1007/s13197-018-3271-2

Table 3.

Actual and predicted values of selected response tested under selected conditions for verification of the optimized region

Optimum point	Feed moisture (%)	Screw speed (rpm)	Temperature of barrel no. 6 (°C)	Expansion ratio		Bulk density (kg/m³)		Hardness (g)		Crispness		SME (kJ/kg)
Optimum point	Feed moisture (%)	Screw speed (rpm)	Temperature of barrel no. 6 (°C)	Predicted	Actual	Predicted	Actual	Predicted	Actual	Predicted	Actual	Predicted	Actual
1	14	425	130	3.06	3.09 ± 0.05^ns	79	79 ± 1.75^ns	1267	1249 157.83^ns	20	23 ± 4^ns	345.65	344 ± 17.32^ns
2	14	425	130	3.04	3.06 ± 0.06^ns	76	77 ± 0.95^ns	1202.81	1219 106.11^ns	19	23 ± 7^ns	327.69	326 ± 5.43^ns

^nsNot significant for t test at 95% level confidence