Table 1 Plackett–Burman design for screening culture conditions for variables.

From: Characterization of natural therapeutic compounds producing novel bacterial strains isolated from Hyderabad, India

Independent Variables

Media Components (g/L)

Levels

−1

+ 1

A

Inositol

5

20

B

Starch

5

20

C

L-asparagine

2

8

D

K2HPO4

1

3

E

Yeast Extract

2

8

F

FeSO40.7 H2O

0.0002

0.003

F

ZnSO40.7 H20

0.0002

0.003

H

pH

3

12

I

Temperature°C

25

45

J

Incubation Period (Days)

3

14

  1. \({\chi}_{1}\)– \({\chi}_{11}\) represent various impact factors (−1 and + 1 designate two different levels).
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