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Table 2 Full-factorial design for the biosurfactant production by Serratia marcescens UCP 1549 after 72 h

From: Sustainable biosurfactant produced by Serratia marcescens UCP 1549 and its suitability for agricultural and marine bioremediation applications

Assay

Lactose (%)

Cassava flour wastewater (%)

Corn oil (%)

Surface tension (mN/m)

Experimental

Predicted

1

− 1

− 1

− 1

29.33

28.77

2

1

− 1

− 1

42.29

41.73

3

− 1

1

− 1

25.92

25.36

4

1

1

− 1

28.34

27.78

5

− 1

− 1

1

29.29

28.73

6

1

− 1

1

34.63

34.07

7

− 1

1

1

26.78

26.22

8

1

1

1

29.07

28.51

9

0

0

0

29.03

30.14

10

0

0

0

29.33

30.14

11

0

0

0

28.82

30.14

12

0

0

0

28.89

30.14