Mechanism of allethrin biodegradation by a newly isolated Sphingomonas trueperi strain CW3 from wastewater sludge

Bioresource Technology
Pankaj BhattShaohua Chen

Abstract

The main aim of this study was to investigate and characterize the bacterial strain that has the potential to degrade allethrin. The isolated strain, Sphingomonas trueperi CW3, degraded allethrin (50 mg L-1) in batch experiments within seven days. The Box-Behnken design optimized allethrin degradation and had a confirmation of 93% degradation at pH 7.0, at a temperature of 30 °C and an inocula concentration of 100 mg L-1. The results from gas chromatography and mass spectrometry analysis confirmed the existence of nine metabolites from the degradation of allethrin with strain CW3. The cleavage of the ester bond, followed by the degradation of the five-carbon rings, was allethrin's primary degradation pathway. The strain CW3 also degraded other widely applied synthetic pyrethroids such as cyphenothrin, bifenthrin, permethrin, tetramethrin, β-cypermethrin and chlorempenthrin. Furthermore, in experiments performed with sterilized soil, strain CW3 based bioaugmentation effectively removed allethrin at a significantly reduced half-life.

Citations

Jun 9, 2020·Frontiers in Microbiology·Shimei PangShaohua Chen
Apr 16, 2020·Frontiers in Microbiology·Wenping ZhangShaohua Chen
Nov 13, 2020·Journal of Biomolecular Structure & Dynamics·Pankaj BhattShshank Chaube
Jan 3, 2021·Environmental Research·Yaohua HuangShaohua Chen
Mar 19, 2021·Critical Reviews in Biotechnology·Pankaj BhattShaohua Chen
Mar 20, 2021·Microbial Cell Factories·Pankaj BhattShaohua Chen
Jul 25, 2020·Bioresource Technology·Pankaj BhattShaohua Chen
Mar 30, 2021·Environmental Science & Technology·Willian Garcia BirolliEdson Rodrigues-Filho
Jul 5, 2021·Journal of Hazardous Materials·Kha Mong TranDokyun Na

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