Degradation Mechanism of a Newly Isolated Effi cient Degrading Bacterial Strain to Carbendazim

[Aims]The aim is to study the degradation mechanism of carbendazim. [Methods] The degradation capability and pathways of of a newly isolated strain to carbendazim were investigated by culture experiment and UV spectroscopy. [Results][Results] The results show that Raoultella sp. MBC is a effi cient degrading strain which make the carbendazim and its degradation products be the sole carbon source for growth. After 72 h incubation under the experimental conditions, the degradation rate of carbendazim is 100%. UV spectra results show that the C=N bond in imidazole molecule structure is destroyed. [Conclusions][Conclusions] The degration pathway of the newly isolated efficient strain is carbendazim→ 2-aminobenzimidazole→2-hydroxybenzimidazole→O-phenylenediamine, which was identified according to the degradation products. But the O-phenylenediamine was not the fi nal degradation product.