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Table 3 Levels of three factors for central composite design

From: Statistical optimization of pectinases from thermophilic Aspergillus fumigatus BT-4 employing response surface methodology through submerged fermentation using agricultural wastes

Factor

Name

Low level

High level

A

Temperature (o C)

40

50

B

pH

1

5

C

Inoculum age (days)

1

5