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Table 1 PBD showing different variables and their tested levels

From: Green ecofriendly enhancement of cellulase productivity using agricultural wastes by Aspergillus terreus MN901491: statistical designs and detergent ability on cotton fabrics

Variable

Unit

Level

Name

Code

Low [−]

High [+]

Corn cob

A

%

0.5

1.5

Rice straw

B

%

0

0.5

Yeast extract

C

%

0.2

0.5

Malt extract

D

%

0

0.5

K2HPO4

E

%

0.05

0.2

MgSO4.7H2O

F

%

0.025

0.1

KCl

G

%

0.025

0.075

(NH4)2SO4

H

%

0

0.1

CaCl2

J

%

0

0.1

Incubation time

K

day

5

8

Inoculum size

L

%

2

4