Table 4 Effects of model coefficients that relate the response to factors

Constant

b₀

107.99474

7.786987

13.87

< 0.0001***

Incubation temperature (30,42)

b₁

− 6.168889

5.874433

− 1.05

0.321

pH(4,9)

b₂

4.635

5.874433

0.79

0.4504

[NaCl](0,1,1)

b₃

2.3316667

5.874433

0.4

0.7007

[Tryptophane](1,9)

b₄

− 1.416667

5.874433

− 0.24

0.8148

Incubation time (1,15)

b₅

− 2.127778

5.874433

− 0.36

0.7256

Incubation temperature *pH

b₁₂

− 0.705625

6.230777

− 0.11

0.9123

Incubation temperature *[NaCl]

b₁₃

0.651875

6.230777

0.1

0.919

pH*[NaCl]

b₂₃

3.023125

6.230777

0.49

0.6391

Incubation temperature *[Tryptophane]

b₁₄

1.666875

6.230777

0.27

0.7951

pH*[Tryptophane]

b₂₄

2.183125

6.230777

0.35

0.7341

[NaCl]*[Tryptophane]

b₃₄

3.413125

6.230777

0.55

0.5972

Incubation temperature *Incubation time

b₁₅

3.476875

6.230777

0.56

0.5904

pH*Incubation time

b₂₅

0.118125

6.230777

0.02

0.9853

[NaCl]*Incubation time

b₃₅

0.878125

6.230777

0.14

0.891

[Tryptophane]*Incubation time

b₄₅

1.435625

6.230777

0.23

0.8229

Incubation temperature * Incubation temperature

b₁₁

− 56.39836

15.90287

− 3.55

0.0063**

pH * pH

b₂₂

− 93.25336

15.90287

− 5.86

0.0002***

[NaCl]*[NaCl]

b₃₃

18.466643

15.90287

1.16

0.2754

[Tryptophane]*[Tryptophane]

b₄₄

29.931643

15.90287

1.88

0.0925

Incubation time*Incubation time

b₅₅

2.3916429

15.90287

0.15

0.8838