Table 3 Analysis of variance table for xylanase activity response of BBD-RSM

Model

19755.14

14

1411.08

75.73

< 0.0001

X₁-RHP

8172.95

1

8172.95

438.65

< 0.0001

X₂-CCP

688.26

1

688.26

36.94

< 0.0001

X₃-INV

1566.82

1

1566.82

84.09

< 0.0001

X₄-PEP

897.7

1

897.7

48.18

< 0.0001

X₁ X ₂

3.69

1

3.69

0.1979

0.6633

X₁ X ₃

164.99

1

164.99

8.86

0.01

X₁ X ₄

736.04

1

736.04

39.5

< 0.0001

X₂ X ₃

791.86

1

791.86

42.5

< 0.0001

X₂ X ₄

577.92

1

577.92

31.02

< 0.0001

X₃ X ₄

980.63

1

980.63

52.63

< 0.0001

X₁²

567.42

1

567.42

30.45

< 0.0001

X₂²

143.64

1

143.64

7.71

0.0148

X₃²

3742.71

1

3742.71

200.88

< 0.0001

X₄²

6.3

1

6.3

0.3381

0.5702

Residual

260.85

14

18.63

Lack of Fit

93.96

10

9.4

0.2252

0.9745

Pure Error

166.89

4

41.72

Cor Total

20015.99

28

Fit statistics

r²

0.987

Standard deviation

4.32

Adjusted r²

0.9739

Mean

255.96

Predicted r²

0.9599

Coefficient of variation (%)

1.69

Adequate precision

38.799