Research Article

Production of β-Glucosidase from a Newly Isolated Aspergillus Species Using Response Surface Methodology

Table 2

Treatment combinations and mean response for β-glucosidase production by A. niger SOI017.

Cellobiose (%)Yeast extract (%)(NH4)2SO4 (%)pHExperimental Sp activity (μmol/ml/mg)

11.1250.2751.14.5 54.5 ± 6.3
21.1250.2751.17.5 6.6 ± 0.4
31.1250.2752.14.53927.0 ± 661.9
41.1250.2752.17.5 21.4 ± 5.3
51.1250.7251.14.53186.9 ± 68.3
61.1250.7251.17.51988.7 ± 707.2
71.1250.7252.14.52024.1 ± 263.2
81.1250.7252.17.5 908.4 ± 121.3
92.3750.2751.14.5 3.2 ± 0.1
102.3750.2751.17.5 4.5 ± 0.2
112.3750.2752.14.5 2.4 ± 0.1
122.3750.2752.17.5 4.5 ± 0.2
132.3750.7251.14.5 402.1 ± 32.4
142.3750.7251.17.5 146.2 ± 107.2
152.3750.7252.14.51378.6 ± 315.2
162.3750.7252.17.5 319.3 ± 31.6
173.0000.5001.66.0 445.2 ± 15.0
180.5000.5001.66.0 921.7 ± 93.3
191.7500.9501.66.01498.4 ± 122.7
201.7500.0501.66.0 3.2 ± 0.3
211.7500.5002.66.01467.9 ± 231.0
221.7500.5000.66.02677.1 ± 111.1
231.7500.5001.69.0 442.2 ± 18.3
241.7500.5001.63.04752.8 ± 139.2
251.7500.5001.66.01964.2 ± 265.1
261.7500.5001.66.02387.5 ± 252.1
271.7500.5001.66.02056.5 ± 33.4
281.7500.5001.66.03553.6 ± 288.4
291.7500.5001.66.01813.1 ± 114.5
301.7500.5001.66.01802.6 ± 160.3