Xylanase Production by Aspergillus sp. using Agroindustrial Wastes as Carbon Sources

Xylanase has become an economic interest enzyme due to its industrial applications. Thus, in order to reduce its production cost, a cheapest alternative carbon source is required for industrial processes. Therefore, the objective of this study was to assess the in natura agroindustrial wastes sunflower stalk and corncob potential for xylanase production by Aspergillus sp. to replace the expensive xylan as the main carbon source. The SR medium containing 1% of residues and standard xylan as carbon sources was used in submerged fermentation under following conditions 100 min-1/96 h, at 30, 40 and 50ºC. The waste replacement as carbon source exhibited a higher xylanase activity at 40ºC with both sunflower stalk (593.07 U/mL) and corncob (488.57 U/mL), compared to the activity achieved with standard xylan (358.17 U/mL). These findings displayed the potential of these residues for the xylanase production by the fungus Aspergillus sp. collected in Sergipe, Brazil.