Characterization of plastic degrading bacteria isolated from landfill sites
Bakht Afreen, Nouman Rasool, Iftikhar Bajwa Saima
Abstract
The plastic pollution is threatening the environment because it has very slow degradation rate and high usage in regular activities. The present study aims at the isolation of novel microorganisms that would assist faster degradation process of polyethylene. The waste samples were collected from diff erent landfi lls and dumpsites. Out of forty samples, eight samples were found to degrade polythene strips in liquid medium. Further screening of these samples showed that two strains of microbes had high potential for polythene degradation. Biochemical tests and ribotyping were performed for characterization of isolated bacteria. Resultantly, two novel bacterial strains were identifi ed named; Bacillus wudalianchiensis_UMT (2A) and Pseudomonas aeruginosa_UMT (6). Analysis of these microbes further revealed that Bacillus wudalianchiensis_UMT and Pseudomonas aeruginosa_UMT have capability to degrade 6.6% and 4.8% polyethylene respectively. So, the results disclosed that these bacteria have great potential to degrade polythene in less time as compare to natural degradation process and can contribute to reduce pollution from our environment.