Abstract:

Polychlorinated biphenyls (PCBs) is a representative of persistent organic pollutants (POPs). More its chlorinated number leads to more difficult its degradation . We prepared PCBs compound degrading enzyme of key enzyme formate dehydrogenase (FDH) of NADH coenzyme regeneration system with isolated 6 PCBs degradation bacteria strains as materials. We address its degrading effect to PCBs. Results indicate that degradation rate of Pseudomonas sp. MGB11/FDH compound enzyme to pentachlorodiphenyl PCB114 is up to 69.4% within 10 h. It therefore has application value in the repair for high chlorine PCBs pollutants with high toxicity and low degradability.

Key words: pentachlorodiphenyl, formate dehydrogenase, compound degrading enzyme