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Table 4 BBD for the selected variables and their different levels

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

Variable

Code

Unit

Level

Low [−]

Central [0]

High [+]

Malt extract

A

%

0.5

1

1.5

(NH4)2SO4

B

%

0.1

0.3

0.5

KCl

C

%

0.1

0.25

0.4