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Table 3 PBED with four variables and the actual responses of total enzyme and cell biomass

From: Bioprocess optimization for pectinase production using Aspergillus niger in a submerged cultivation system

Run

Pectin (g/L)

(NH4)2SO4 (g/L)

K2HPO4 (g/L)

MgSO4.5H2O (g/L)

Response pectinase (U/mL)

Response CDW (g/L)

1

30.00

1.30

0.50

0.05

65.52

2.20

2

30.00

3.30

0.50

0.50

87.73

2.08

3

10.00

1.30

1.00

0.50

23.00

1.70

4

30.00

3.30

1.00

0.05

52.32

1.80

5

30.00

3.30

0.50

0.50

63.22

1.88

6

30.00

3.30

1.00

0.05

8.94

1.75

7

30.00

1.30

0.50

0.05

51.88

2.33

8

10.00

3.30

1.00

0.50

38.87

1.75

9

10.00

3.30

0.50

0.05

52.99

1.00

10

30.00

1.30

0.50

0.05

58.70

2.45

11

30.00

1.30

1.00

0.05

32.92

1.89

12

30.00

1.30

1.00

0.05

34.90

2.25

13

10.00

3.30

1.00

0.05

33.79

1.00

14

30.00

1.30

1.00

0.50

33.95

3.10

15

10.00

1.30

1.00

0.50

23.00

2.00

16

30.00

1.30

1.00

0.50

34.74

3.05

17

10.00

3.30

1.00

0.05

38.47

1.18

18

30.00

3.30

0.50

0.50

71.71

1.65

19

30.00

1.30

1.00

0.50

33.16

2.65

20

30.00

3.30

0.50

0.50

54.74

2.10

21

10.00

1.30

0.50

0.50

39.66

1.65

22

10.00

1.30

0.50

0.50

42.92

1.75

23

10.00

1.30

0.50

0.05

36.25

1.40

24

10.00

3.30

0.50

0.05

54.89

0.90

25

10.00

3.30

1.00

0.50

38.71

1.65

26

10.00

3.30

1.00

0.50

38.79

1.70

27

30.00

3.30

0.50

0.50

88.85

1.85

28

10.00

3.30

1.00

0.05

43.15

1.25

29

30.00

3.30

0.50

0.50

88.29

2.30

30

10.00

3.30

0.50

0.05

53.94

0.95

31

10.00

1.30

1.00

0.50

23.00

1.85

32

30.00

3.30

1.00

0.05

45.69

1.70

33

10.00

1.30

0.50

0.50

46.17

1.70

34

10.00

1.30

0.50

0.05

42.04

1.30

35

10.00

1.30

0.50

0.05

30.46

1.35

36

30.00

1.30

1.00

0.05

30.94

2.07