Abstract
The present study was planned with the objective to isolate and characterize a carbendazim-degrading Achromobacter sp. strain GB61 from the contaminated agriculture field. Optimized carbendazim biodegradation (76.2%) by Achromobacter sp. strain GB61 was observed at 30 °C, pH 7.0, and 120 rpm within 20 days of incubation and was determined using response surface methodology. The degradation kinetics revealed the half-life (t1/2) of 7.3 days, and correlation coefficient (R2) 0.0882 and degradation constant (K) 0.095 respectively. Maximum specific degradation rate (qmax), half-saturation constant (Ks) and inhibition constant (Ki) were determined to be 0.122 d−1, 0.724 mg L−1 and 271.71 mg L−1, respectively. Intermediate metabolites of carbendazim biodegradation confirming the formation of dihydroxybenzimidazole, 2-aminobenzimidazole and benzimidazole as intermediates. The results of the experiments suggested that the strain GB61 could be used for large-scale bioremediation of carbendazim contaminated environments.
Disclosure statement
No potential conflict of interest was reported by the author(s).