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Biodegradation

, Volume 19, Issue 1, pp 77–82 | Cite as

Biodegradation of Cypermethrin by Micrococcus sp. strain CPN 1

  • Preeti N. Tallur
  • Veena B. Megadi
  • Harichandra Z. Ninnekar
Original Paper

Abstract

A bacterium capable of utilizing pyrethroid pesticide cypermethrin as sole source of carbon was isolated from soil and identified as a Micrococcus sp. The organism also utilized fenvalerate, deltamethrin, perimethrin, 3-phenoxybenzoate, phenol, protocatechuate and catechol as growth substrates. The organism degraded cypermethrin by hydrolysis of ester linkage to yield 3-phenoxybenzoate, leading to loss of its insecticidal activity. 3-Phenoxybenzoate was further metabolized by diphenyl ether cleavage to yield protocatechuate and phenol as evidenced by isolation and identification of metabolites and enzyme activities in the cell-free extracts. Protocatechuate and phenol were oxidized by ortho-cleavage pathway. Thus, the organism was versatile in detoxification and complete mineralization of pyrethroid cypermethrin

Keywords

Biodegradation Cypermethrin Micrococcus sp. strain CPN 1 3-Phenoxybenzoate Protocatechuate 

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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Preeti N. Tallur
    • 1
  • Veena B. Megadi
    • 1
  • Harichandra Z. Ninnekar
    • 1
  1. 1.Department of BiochemistryKarnataka UniversityDharwadIndia

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