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Table 6 ANOVA value obtained from orthogonal design employed in optimization of lignin fractionation yield during ethanol extraction of steam-exploded wheat straw

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 206.775 9 22.975 4.854 0.034
X1 39.842 3 13.281 2.806 0.131
X2 94.012 3 31.337 6.621 0.025
X3 72.921 3 24.307 5.135 0.043
Error 28.399 6 4.733   
Corrected total 235.174 15