2008•Food Science and Technology InternationalRequires access
Screening and mutating of a bacterium strain producing fibrinolytic enzyme deriving from Douchi
Wei Wang
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Abstract
A bacillus subtilis DXR25 strain was isolated from Douchi,the fibrinolic enzyme activity produced by DXR25 was 295.34 U/mL,a mutant was then isolated after treated with UV,60Co,DE and NTG,and the fibrinoic enzyme activity was enhanced to 55.42 U/mL,which was 2.2 times higher than that of DXR25.At last,the mutant has steady heritability through 10 generations culturing.