Influence of phenol on the biodegradation of pyridine by freely suspended and immobilized Pseudomonas putida MK1

Letters in Applied Microbiology
M K KimS-T Lee

Abstract

To study the effect of co-contaminants (phenol) on the biodegradation of pyridine by freely suspended and calcium alginate immobilized bacteria. Varying concentrations of phenol were added to free and calcium alginate immobilized Pseudomonas putida MK1 (KCTC 12283) to examine the effect of this pollutant on pyridine degradation. When the concentration of phenol reached 0.38 g l(-1), pyridine degradation by freely suspended bacteria was inhibited. The increased inhibition with the higher phenol levels was apparent in increased lag times. Pyridine degradation was essentially completely inhibited at 0.5 g l(-1) phenol. However, immobilized cells showed tolerance against 0.5 g l(-1) phenol and pyridine degradation by immobilized cell could be achieved. This works shows that calcium alginate immobilization of microbial cells can effectively increase the tolerance of P. putida MK1 to phenol and results in increased degradation of pyridine. Treatment of wastewater stream can be negatively affected by the presence of co-pollutants. This work demonstrates the potential of calcium alginate immobilization of microbes to protect cells against compound toxicity resulting in an increase in pollutant degradation.

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Citations

Feb 18, 2009·Applied Microbiology and Biotechnology·Yaohui BaiXiaoyan Tang
Mar 23, 2013·Applied Microbiology and Biotechnology·Ji-Quan SunXiao-Lei Wu
Aug 12, 2009·Journal of Industrial Microbiology & Biotechnology·Yaohui BaiXiaoyan Tang
Feb 21, 2014·Journal of Environmental Sciences (China)·Donghui WenLujun Chen
May 20, 2011·Journal of Hazardous Materials·Ji-Quan SunXiao-Lei Wu
Jan 5, 2011·Journal of Hazardous Materials·Haiyan YaoChaohai Wei
Nov 18, 2018·FEMS Microbiology Letters·Yuxiu ZhangTuanyao Chai
Apr 15, 2021·Bioresource Technology·Nirmal GhimireWenche Hennie Bergland

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