Degradation and mineralization of 3-chlorobiphenyl by a mixed aerobic bacterial culture.
A mixed bacterial culture obtained from polychlorinated-biphenyl-contaminated river sediments proved capable of degrading 3-chlorobiphenyl (3-CB) under aerobic laboratory conditions. Almost total mineralization of 150 mg/l of 3-CB occurred when, after 3 days of incubation, the mineral medium was supplied with benzoic acid as a carbon source. Two strains of Pseudomonas capable of degrading the substrate to 3-chlorobenzoic acid and a strain of Pseudomonas fluorescens capable of co-metabolizing this metabolite were selected from the mixed culture. A nearly stoichiometric amount of chloride, which defines the percentage of total mineralization, was eliminated during mixed culture growth.
Department of Applied Chemistry and Material Science, Engineering Faculty, University of Bologna, Italy.
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Fava
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Marchetti
D001420:Bacteria, Aerobic / Q000302:isolation & purification / Q000378:metabolism*; D001431:Bacteriological Techniques; D001673:Biodegradation, Environmental; D001713:Biphenyl Compounds / Q000378:metabolism*; D002712:Chlorides / Q000378:metabolism; D004785:Environmental Pollutants / Q000378:metabolism*; D011549:Pseudomonas / Q000302:isolation & purification / Q000378:metabolism; D011551:Pseudomonas fluorescens / Q000302:isolation & purification / Q000378:metabolism; D014871:Water Microbiology
D001713:Biphenyl Compounds; D002712:Chlorides; D004785:Environmental Pollutants; C034280:3-chlorobiphenyl