Production characteristics of bioflocculant by Achromobacter sp.JY-66
1999
Woo, J.S. | Chung, M.J. (Chungbuk National University, Cheongju (Korea Republic). Department of Food Science and Technology) | Jeong, M.J. (National Institute of Agricultural Science and Technology, Suwon (Korea Republic). ) | Do, D.H. (Chungcheong Junior College, Cheongwon (Korea Republic). Department of Food Science and Technology)
Among microorganisms isolated form soil, YJ-66 strain was the best producer of flocculant and was examined for flocculating ability in the active carbon and CaCl2. YJ-66 strain was identifed to be a species belonging to the genus Achromobacter. The optimum culture condition for production of bioflocculant with the isolated strain was for 72 hrs at 30 degrees centigrade and pH 7.5. The favorable carbon, nitrogen sources and inorganic salts for production of the flocculant were sucrose, peptone, MgSO4 and KH2PO4, whose optimal concentrations were 2%. 0.067%, 0.1% and 0.1%, respectively. Addition of the carbon and inorganic salts significantly increased the production of flocculant. Compositions of optimized culture medium for bioflocculant production by Achromobacter sp. YJ-66 were 2% sucrose, 0.067% peptone, 0.1% MgSO4 and 0.1% KH2PO4 in initial pH 7.5 during at 30 degrees for 72 hrs.
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