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Table 4 Analysis of variance based on CCD

From: Optimization of a recombinant BlaR-CTD protein formulation using the response surface methodology

Source

350 nm

260/280 nm

DF

Adj SS

Adj MS

F-Value

P-Value

DF

Adj SS

Adj MS

F-Value

P-Value

Model

9

0.000078

0.000009

3.06

0.048

9

0.187504

0.020834

1.96

0.154

Linear

3

0.000038

0.000013

4.44

0.031

3

0.089839

0.029946

2.82

0.093

pH

1

0.000003

0.000003

1.08

0.322

1

0.089545

0.089545

8.43

0.016*

Sucrose

1

0.000034

0.000034

11.89

0.006*

1

0.000035

0.000035

0.00

0.956

Glycerol

1

0.000001

0.000001

0.35

0.567

1

0.000260

0.000260

0.02

0.879

Square

3

0.000024

0.000008

2.77

0.097

3

0.095751

0.031917

3.00

0.081

pH*pH

1

0.000002

0.000002

0.80

0.392

1

0.065304

0.065304

6.15

0.033*

Sucrose*Sucrose

1

0.000020

0.000020

7.23

0.023*

1

0.013046

0.013046

1.23

0.294

Glycerol*Glycerol

1

0.000001

0.000001

0.25

0.628

1

0.008111

0.008111

0.76

0.403

2-Way Interaction

3

0.000017

0.000006

1.97

0.183

3

0.001913

0.000638

0.06

0.980

pH*Sucrose

1

0.000010

0.000010

3.57

0.088

1

0.000190

0.000190

0.02

0.896

pH*Glycerol

1

0.000006

0.000006

2.16

0.172

1

0.000903

0.000903

0.09

0.777

Sucrose*Glycerol

1

0.000000

0.000000

0.18

0.683

1

0.000820

0.000820

0.08

0.787

Error

10

0.000028

   

10

0.106235

0.010624

  

Lack-of-Fit

5

0.000017

0.000003

  

5

0.095928

0.019186

9.31

0.014

Pure Error

5

0.000012

0.000002

1.40

0.362

5

0.010307

0.002061

  

Total

19

0.000106

   

19

0.293739