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Table 4 Analysis of variance of the degree of purity of L-arabinose calculated with a quadratic equation obtained from experimental results

From: A novel method to prepare L-Arabinose from xylose mother liquor by yeast-mediated biopurification

Source Sum of Squares df Mean Square F-Value Probability > F
Model 3093.963 9 343.7737 5.603423 0.0063
X1 452.6256 1 452.6256 7.377682 0.0217
X2 163.2006 1 163.2006 2.660129 0.1339
X3 1515.156 1 1515.156 24.69665 0.0006
(X1)(X2) 22.11125 1 22.11125 0.360408 0.5616
(X1)(X3) 2.53125 1 2.53125 0.041259 0.8431
(X2)(X3) 12.25125 1 12.25125 0.199692 0.6645
(X1)2 190.7719 1 190.7719 3.109534 0.1083
(X2)2 498.9091 1 498.9091 8.132091 0.0172
(X3)2 583.413 1 583.413 9.509483 0.0116
Residual 613.5065 10 61.35065   
Lack of Fit 611.0115 5 122.2023 244.8944 < 0.0001
Pure Error 2.495 5 0.499   
Total 3707.47 19    
  1. X1, X2 and X3 correspond to fermentation time, temperature and concentration of xylose mother liquor, respectively; df, degrees of freedom