Table 3 Details of experimental attempts used in the response surface methodology (RSM) optimization.

From: Development of a cost-effective medium for Photorhabdus temperata bioinsecticide production from wastewater and exploration of performance kinetic

Run

Coded levels

Results

C/N ratio X1

Inoclum size (%) X2

NaCl (g/L) X3

Total cell counts (108 cells/mL)

Insecticidal activity (%)

1

− 1

− 1

0

5.00

40.40

2

1

− 1

0

4.00

37.84

3

− 1

1

0

9.30

56.13

4

1

1

0

9.50

81.66

5

− 1

0

− 1

6.00

37.40

6

1

0

− 1

7.80

47.79

7

− 1

0

1

9.75

47.34

8

1

0

1

10.00

60.44

9

0

− 1

− 1

2.00

15.34

10

0

1

− 1

6.00

50.18

11

0

− 1

1

4.75

30.30

12

0

1

1

10.00

70.34

13

0

0

0

10.50

80.16

14

0

0

0

10.75

83.79

15

0

0

0

10.75

80.80

16

0

0

0

10.50

77.90

17

0

0

0

10.50

78.87

18

0

0

0

10.00

80.14