Isolation and characterization of Aeromonas sp B-5 capable of decolorizingvarious dyes

Aeromonas sp. B-5, which has the ability to decolorize azo dyes, was isolat ed from soil. Aeromonas sp. B-5 completely decolorized 100 mg/l of Bordeaux S by reductive cleavage of azo bonds under static conditions in 24 h. Thou gh the decolorization of Bordeaux S by Aeromonas sp. B-5 was suppressed und er shaking, rapid decolorization was observed when the culture was changed to static conditions after cultivation with shaking. The indigoid dye, Acid blue 74, was decolorized by Aeromonas sp. B-5 under shaking conditions, in contrast to the decolorization of azo dyes.