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Table 2 Factor values for independent variables and response variable (experimental and predicted) of screening experiments to optimize culture media composition

From: Vinasse: from a residue to a high added value biopolymer

Run

C (g/L)

N (g/L)

Ph (g/L)

P—experimental (mg/L h)

P—predicted (mg/L h)

1

− 1

− 1

0

1.75

1.80

2

1

− 1

0

0.54

0.69

3

− 1

1

0

0.59

0.60

4

1

1

0

0.24

0.44

5

− 1

0

− 1

0.25

0.64

6

1

0

− 1

0.46

0.67

7

− 1

0

1

1.29

1.24

8

1

0

1

0.26

0.03

9

0

− 1

− 1

1.55

1.33

10

0

1

− 1

1.38

1.11

11

0

− 1

1

1.52

1.77

12

0

1

1

0.43

0.64

13

0

0

0

0.27

0.29

14

0

0

0

0.27

0.29

15

0

0

0

0.32

0.29

  1. C carbon; N nitrogen; Ph phosphorous; P PHB productivity