Microwave Assisted Alkali Pretreatment of Rice Straw for Enhancing Enzymatic Digestibility

Table 2

ANOVA of the quadratic model microwave and NaOH pretreatment and its influential factors.

Source	Sum of squares	Degree of freedom	Mean square	𝐹 value	𝑃 value
Model	50337.85	9	5593.09	13.23	0.0013	Significant
Time (𝐶)	2804.82	1	2804.82	6.64	0.0367
NaOH concentration (𝐴^2) quadratic terms	31134.89	1	31134.89	73.66	0.0001
Power (𝐵^2) quadratic terms	10504.96	1	10504.96	24.85	0.0016
Time (𝐶^2) quadratic terms	3411.50	1	3411.50	8.07	0.0250
Residual	2958.84	7	422.69
Lack of fit	2330.33	3	776.78	4.94	0.0784	Not significant