Table 5 Regression analysis of a full second-order polynomial model for optimization of nisin production.

From: Improving nitrogen source utilization from defatted soybean meal for nisin production by enhancing proteolytic function of Lactococcus lactis F44

Source

Sum of Squares

df

Mean Square

F-value

p-value Prob > F

Model

9.75E + 06

5

1.95E + 06

20.46

0.0005

X3

5.96E + 05

1

5.96E + 05

6.25

0.0409

X8

3.74E + 06

1

3.74E + 06

39.26

0.0004

X3X8

1294.27

1

1294.27

0.014

0.9105

X3X3

9.40E + 05

1

9.40E + 05

9.86

0.0164

X8 X8

4.94E + 06

1

4.94E + 06

51.84

0.0002

Residual

6.68E + 05

7

95358.18

  

Lack of Fit

6.20E + 05

3

2.07E + 05

17.5

0.0092

Pure Error

47250.69

4

11812.67

  

Cor Total

1.04E + 07

12

   
  1. R2 = 0.9359; Adj R2 = 0.8902; C.V.% = 9.67; Adeq Precision = 12.651.
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