Skip to main content

Table 1 Coded and actual values of variables in experiments of Box–Behnken design

From: Effects of abiotic stressors on lutein production in the green microalga Dunaliella salina

Experiment number

Codedaand actual values of variablesb

X 1 (%)

X 2 (mM)

X 3 (M)

1

0 (-1)

0.2 (-1)

1.5 (0)

2

50 (1)

0.2 (-1)

1.5 (0)

3

0 (-1)

62.2 (1)

1.5 (0)

4

50 (1)

62.2 (1)

1.5 (0)

5

0 (-1)

31.2 (0)

0.5 (-1)

6

50 (1)

31.2 (0)

0.5 (-1)

7

0 (-1)

31.2 (0)

2.5 (1)

8

50 (1)

31.2 (0)

2.5 (1)

9

25 (0)

0.2 (-1)

0.5 (-1)

10

25 (0)

62.2 (1)

0.5 (-1)

11

25 (0)

0.2 (-1)

2.5 (1)

12

25 (0)

62.2 (1)

2.5 (1)

13

25 (0)

31.2 (0)

1.5 (0)

14

25 (0)

31.2 (0)

1.5 (0)

15

25 (0)

31.2 (0)

1.5 (0)

  1. a Coded values were in brackets.
  2. b X 1 : Blue LED percentage (% of total LEDs); X 2 : KNO3 concentration (mM); X 3 : NaCl concentration (M).