Enhanced biodegradation of mixed PAHs by mutated naphthalene 1,2-dioxygenase encoded by Pseudomonas putida strain KD6 isolated from petroleum refinery waste.

ABSTRACT: Polycyclic aromatic hydrocarbons (PAHs) are a group of environmental pollutant that are given top priority to maintain water and soil quality to the most amenable standard. Biodegradation of PAHs by bacteria is the convenient option for decontamination on site or off site. The aim of the present study was to isolate and identify naturally occurring bacteria having mixed PAHs biodegradation ability. The newly isolated Pseudomonas putida strain KD6 was found to efficiently degrade 97.729% of 1500 mg L^-1 mixed PAHs within 12 days in carbon-deficient minimal medium (CSM). The half-life (t_1/2) and degradation rate constant (k) were estimated to be 3.2 and 0.2165 days, respectively. The first-order kinetic parameters in soil by strain KD6 had shown effi

SUBMITTER: Dutta K 

PROVIDER: S-EPMC5630526 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature