Research on the activity of extracellular azoreductase enzymes from Bacillus tropicuss BD 01 has been carried out. Extract of azoreductase enzyme from bacteria B. tropicuss BD 01 was produced by centrifugation process of bacterial liquid culture at 3000 rpm and 4°C. The crude extract of the enzyme was then fractionated with ammonium sulfate and dialyzed. The results of the enzyme fraction with…