THE ISOLATION,SCREENING AND IDENTIFICATION OF BACILLUS SUBTILIS STRAINS PRODUCING HIGH-ACTIVITY FIBRONOLYSIN / 微生物学通报

The results of isolation,screening and identification of Bacillus subtilis strains which produced fibronolysion were reported in this paper.20 Bacillus subtilis strains were screened from different withered straw samples.Among them,FM-S1,FM-S2,FM-S6,FM-S8 and FM-S11 produce fibronolysin with higher activity.According to morphological,physiological and biochemical characters,the screened strains were confirmed to be Bacillus subtilis. For FM-S2,the production of fibronolysin type in solid fermentation was considered to be synchronous with growth.