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April 11, 2026Scientific ReportsOpen Access

Biodegradation of chlorpyrifos by the newly isolated Escherichia fergusonii and Clostridium bifermentans: Identification and growth optimization for bioremediation

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Authors

TLTesfahun Lamboro LagisoAWAdugna Abdi WoldesemayatZGZerihun Belay Gemta

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Overview

Identifies and optimizes the growth of bacteria degrading chlorpyrifos in contaminated soil, highlighting their potential for bioremediation.

Key Points

  • The study aims to identify bacterial strains capable of degrading chlorpyrifos and optimize their growth conditions for effective bioremediation.
  • Isolated bacteria from agricultural soil in Meki and Wonji-shoa using enrichment techniques.
  • Optimized growth conditions including pH, temperature, and chlorpyrifos concentration.
  • Measured bacterial growth with UV-VIS Spectrophotometer at 600 nm and chlorpyrifos degradation at 290 nm every two days.
  • Identified bacterial strains using biochemical characterization and 16S rRNA sequencing.
  • Confirmed degradation efficacy with GC-MS analysis.
  • Escherichia fergusonii degraded 59.34% and Clostridium bifermentans 70.82% of chlorpyrifos at initial concentration of 50 mg L−1 within 20 days.
  • The addition of glucose significantly enhanced degradation, achieving > 99% dissipation of the initial chlorpyrifos concentration (P < 0.05).
  • Optimum growth conditions were pH 5.0 and 30 °C for Clostridium bifermentans, and 35 °C for Escherichia fergusonii.

Cite This Study

Lagiso et al. (2026) studied this question.

synapsesocial.com/papers/69d9e5ec78050d08c1b762f7https://doi.org/10.1038/s41598-026-46278-3
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