Table 4 ANOVA value obtained from quadratic rotation-regressive design employed in optimization of hemicellulose fractionation yield during steam explosion pretreatment
From: Multilevel composition fractionation process for high-value utilization of wheat straw cellulose
Factor | Sum of squares | Degree of freedom | Mean square | Freedom ratio | P value |
|---|---|---|---|---|---|
Corrected model | 427.018 | 7 | 61.003 | 47.982 | 0.000 |
x1 | 144.993 | 3 | 48.331 | 38.015 | 0.003 |
x2 | 237.313 | 3 | 79.104 | 62.220 | 0.005 |
Error | 6.357 | 5 | 1.271 | Â | Â |
Corrected total | 433.375 | 12 | Â | Â | Â |