Optimization for the Production of Cellulase Enzyme from Municipal Solid Waste Residue by Two Novel Cellulolytic Fungi

Table 2

Effect of nitrogen sources (%) on cellulase production (U/mL) by A. niger.

Conc.			0.5	1.0	1.5	2.0	2.5	3.0
Different nitrogen sources	Peptone	1	0.19 ± 0.02	1.78 ± 0.06	1.27 ± 0.04	0.87 ± 0.04	0.61 ± 0.03	0.41 ± 0.02
		2	0.06 ± 0.02	1.44 ± 0.05	1.08 ± 0.04	0.62 ± 0.04	0.43 ± 0.03	0.38 ± 0.03
		3	0.27 ± 0.02	1.97 ± 0.05	1.61 ± 0.05	0.97 ± 0.04	0.51 ± 0.03	0.43 ± 0.05
	Yeast extract	1	0.16 ± 0.02	1.71 ± 0.07	1.43 ± 0.05	0.95 ± 0.04	0.69 ± 0.02	0.53 ± 0.03
		2	0.09 ± 0.02	1.68 ± 0.03	1.34 ± 0.04	0.72 ± 0.04	0.56 ± 0.07	0.33 ± 0.05
		3	0.31 ± 0.02	1.89 ± 0.05	1.43 ± 0.04	1.05 ± 0.04	0.73 ± 0.02	0.51 ± 0.04
	Beef extract	1	0.64 ± 0.02	1.78 ± 0.05	1.27 ± 0.04	0.87 ± 0.04	0.61 ± 0.03	0.41 ± 0.05
		2	0.16 ± 0.02	1.54 ± 0.07	1.08 ± 0.04	0.62 ± 0.05	0.43 ± 0.03	0.38 ± 0.02
		3	0.27 ± 0.02	1.97 ± 0.03	1.61 ± 0.04	0.97 ± 0.04	0.51 ± 0.07	0.43 ± 0.05
	Ammonium nitrate	1	0.09 ± 0.02	1.02 ± 0.04	0.83 ± 0.03	0.43 ± 0.04	0.37 ± 0.02	0.20 ± 0.02
		2	0.08 ± 0.02	0.97 ± 0.03	0.73 ± 0.04	0.54 ± 0.04	0.29 ± 0.07	0.11 ± 0.05
		3	0.18 ± 0.02	0.99 ± 0.03	0.84 ± 0.04	0.63 ± 0.04	0.41 ± 0.07	0.32 ± 0.05
	Sodium nitrate	1	0.12 ± 0.02	1.62 ± 0.05	1.03 ± 0.04	0.89 ± 0.04	0.55 ± 0.02	0.47 ± 0.05
		2	0.10 ± 0.02	1.39 ± 0.06	1.01 ± 0.04	0.72 ± 0.04	0.44 ± 0.03	0.21 ± 0.02
		3	0.41 ± 0.02	1.84 ± 0.05	1.21 ± 0.04	0.79 ± 0.05	0.61 ± 0.04	0.33 ± 0.02

1-FPase, 2-CMCase & 3-β-glucosidase.