Fig. 4From: Utilization of corncob xylan as a sole carbon source for the biosynthesis of endo-1,4-β xylanase from Aspergillus niger KIBGE-IB36 a Optimization of fermentation period for the production of endo-1,4-β xylanase from Aspergillus niger KIBGE-IB36. b Effect of different concentrations of corncob xylan on endo-1,4-β xylanase production from Aspergillus niger KIBGE-IB36. Effect of different concentrations of salts on endo-1,4-β xylanase production from Aspergillus niger KIBGE-IB36, c MgSO4, d K2HPO4. Error bars represent the standard deviation (n = 3)Back to article page