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Table 3 Analysis of variance for the response surface quadratic model (Eq. 7) of total protein release

From: Disruption of Pseudomonas putida by high pressure homogenization: a comparison of the predictive capacity of three process models for the efficient release of arginine deiminase

Source SS DF MS F value P value (Prob > F)
Model 14.95 9 1.66 29.01 <0.0001
Cell concentration (A) 10.82 1 10.82 189.04 <0.0001
Operating pressure (B) 1.07 1 1.07 18.71 0.0015
No. of passes (C) 0.81 1 0.81 14.19 0.0037
AB 0.22 1 0.22 3.81 0.0796
AC 0.80 1 0.80 13.93 0.0039
BC 0.34 1 0.34 5.88 0.0358
A 2 0.12 1 0.12 2.14 0.1740
B 2 3.321 × 10−3 1 3.321 × 10−3 0.058 0.8145
C 2 0.22 1 0.22 3.88 0.0772
Residual 0.57 10 0.057   
Lack-of-fit 0.27 5 0.054 0.88 0.5535
Pure error 0.30 5 0.061   
Cor. total 15.52 19    
  1. R 2 = 0.9631; adjusted R 2 = 0.9299; predicted R 2 = 0.8457; adequate precision = 19.536; coefficient of variation (%) = 7.42; standard deviation = 0.24; mean = 3.22
  2. SS sum of squares; DF degrees of freedom; MS mean sum of squares