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Table 1 Effect of different carbon sources on xylanase production

From: Bioprocess and biotechnology: effect of xylanase from Aspergillus niger and Aspergillus flavus on pulp biobleaching and enzyme production using agroindustrial residues as substract

  Aspergillus niger Aspergillus flavus
Carbon sources Activity Protein Specific activity Activity Protein Specific activity
  (U/ml) (mg/ml) (U/mg of protein) (U/ml) (mg/ml) (U/mg of protein)
Glucose 1.0% 0.04 0.37 0.11 (±0.09) 0.18 0.79 0.23 (±0.03)
Rice bran 1.0% 2.77 0.67 4.13 (±0.45) 0.11 0.97 0.11 (±0.01)
Rice bran 0.5% 1.13 0.54 2.09 (±0.37) 0.09 0.97 0.09 (±0.01)
Rice straw 1.0% 0.97 0.45 2.16 (±0.10) 2.92 0.91 3.21 (±0.12)
Rice straw 0.5% 0.48 0.33 1.46 (±0.39) 1.87 0.71 2.63 (±0.02)
Coarse sugarcane bagasse 1.0% 5.49 0.72 7.63 (±0.45) 2.64 0.75 3.52 (±0.27)
Coarse sugarcane bagasse 0.5% 2.78 0.61 4.56 (±0.43) 0.63 0.66 0.96 (±0.14)
Fine sugarcane bagasse 1.0% 5.96 0.78 7.64 (±0.44) 5.53 0.72 7.68 (±0.29)
Fine sugarcane bagasse 0.5% 5.32 0.50 10.64 (±0.45) 2.33 0.97 2.40 (±0.09)
Corncob 1.0% 8.00 0.80 10.00 (±0.31) 3.22 0.86 3.74 (±0.07)
Corncob 0.5% 5.84 0.64 9.13 (±0.24) 1.65 0.62 2.67 (±0.44)
Wheat bran 1.0% 8.42 0.66 12.76 (±0.24) 11.57 1.44 8.03 (±0.48)
Wheat bran 0.5% 6.23 0.69 9.03 (±0.27) 10.26 1.18 8.70 (±0.03)
Xylan (oat spelt) 1.0% 6.05 0.58 10.43 (±0.31) 11.71 0.87 13.46 (±0.38)
Xylan (oat spelt) 0.5% 6.61 0.59 11.20 (±0.24) 10.38 0.87 11.94 (±0.41)
Xylan (birchwood) 1.0% 7.27 0.72 10.10 (±0.13) 11.22 0.55 20.40 (±0.21)
Xylan (birchwood) 0.5% 9.12 0.58 15.72 (±0.05) 11.64 0.74 15.72 (±0.13)
Corncob 0.5% + Fine sugarcane bagasse 0.5% 9.25 0.52 17.79 (±0.50) 3.59 0.76 4.72 (±0.02)
Wheat bran 0.5% + Fine sugarcane bagasse 0.5% 9.90 0.52 19.04 (±0.37) 10.77 1.23 8.75 (±0.37)
Wheat bran 0.5% + Corncob 0.5% 10.50 0.52 20.19 (±0.36) 11.92 1.07 11.14 (±0.01)
  1. A. niger and A. flavus were grown on SR liquid media (Rizzatti et al., 2001) and different carbon sources, which were incubated for five and two days, respectively, at 30°C under orbital agitation (110 rpm) condition. The assays were performed at 60°C and McIlvaine buffer pH 5.0.