Chinese Journal of Chemical Engineering, Vol.11, No.5, 594-597, 2003
Mutagenesis and screening of high yield xylanase production strain of Aspergillus usamii by microwave irradiation
A high yield xylanase producing strain, A. usamii L336-23, was screened out from its parent strain A.usamii L336 after microwave irradiation. Its productivity of xylanase activity increased by 35.7% from 21000 mu.ml(-1) to 28500 mu.ml(-1) and was stable after frequent subcultures and storage for more than two months. The mechanism of microwave mutation was also discussed.