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One hundred and seventeen coloaks were screened for the detection of the production of exodextranase on the dextraa-mineral salts medium. Tea colonies out of the. produced the dextraaase. lavobactertum muWvonem peaty producing the enzyme was isolated from soil, identified and then studied for various biochemical cluractedelice. The activity of the deztranase i? the cultured medium was high between pH 8 and 9 at 35°C, and between 45°C and 55°C at pH S. By the growth curves the generation times of the bacterium ware approximately 52 minutes in the LB broth, 3$ mhmtes is the LB plus 1% dextran and f60 minutes is the dextran-alb. The strain did not have any phndd, and was susceptible to gentanrkin, cotrimoxazole and cefoperazone, and moderately susceptible to Nlormphedeol, eefamandole and cefotazime, bat resistant to ampidWn, ceptuloddn, tetracycline, am&acin and tobramydn.
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