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Table 3 Analysis of variance (ANOVA) for β-galactosidase activity

From: Optimization and partial purification of beta-galactosidase production by Aspergillus niger isolated from Brazilian soils using soybean residue

Source

F value

p-value > F

Model

18.21

0.018

Speed agitation

1.92

0.259

Temperature

32.17

0.010

pH

60.04

0.004

X 1 X 2

5.83

0.094

X 1 X 3

3.22

0.170

X 2 X 3

6.07

0.090

Lack of fit

9.110

0.094

  1. The model including as independent variables (X1) agitation, (X2) temperature and (X3) pH
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