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Table 6 Central composite face-centered design and experimental results of exo-PG activity in the optimization step of A. sojae CBS 100928

From: Efficient polygalacturonase production from agricultural and agro-industrial residues by solid-state culture of Aspergillus sojae under optimized conditions

Trial

Experimental factors

Response

Moisture level (%)

Time (d)

exo-PG activity (U/g)

1

130

6

87.5

2

170

6

49.7

3

130

8

95.5

4

170

8

95.7

5

130

7

94.7

6

170

7

63.2

7

150

6

94.0

8

150

8

120.7

9*

150

7

93.8

10*

150

7

103.4

11*

150

7

102.0

  1. *The standard variation between the center point repetitions was below 5%.
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