Improving the specific activity and pH stability of xylanase XynHBN188A by directed evolution

Xylanases have been successfully used in food, paper, and pulp industries and are considered to be a key player in the biodegradation of xylan to valuable end products. However, most of the natural xylanases present poor activity in high-temperature and high-alkali environment. Therefore, it is necessary to modify the enzymes to meet the increasing demands of industries. Directed evolution was used to improve the specific activity and pH...