FIELD: biotechnology, biochemistry, microbiology.
SUBSTANCE: the strain Bacillus circulans B-65 a producer of cyclodextrin glucanotransferase is isolated and selected form the soil sample by culturing in nutrient medium with amylolytic activity 12.17 U/ml and cyclodextrinogenic activity up to 0.530 U/ml. Cyclodextrin glucanotransferase isolated from B. circulans B-65 shows the high degree for conversion of starch to cyclodextrins and this enzyme is specific for formation of β-cyclodextrin. Invention can be used in food industry for preparing cyclodextrins and cyclodextrin glucanotransferase used in different branches of industry.
EFFECT: improved isolating method, valuable properties of strain and enzymes.
9 cl, 8 tbl, 2 ex
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