Organophosphorus insecticides

Hassall, Kenneth A.

doi:10.1007/978-1-349-20990-3_4

Cited by 6 publications

(2 citation statements)

References 48 publications

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“…These insects negatively impact a large number of crops. Dimethoate kills insects by contact and stomach action through interfering with acetylcholinesterase (AChE) activity, which is essential for the proper functioning of the nervous systems of both humans and insects [10,11]. Dimethoate is classified as a moderately hazardous compound by the World Health Organization (WHO) and is stable in aqueous media between pH 2 and 7.…”

Section: Introductionmentioning

confidence: 99%

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Microbial Detoxification of Dimethoate and Methomyl Residues in Aqueous Media

Derbalah

Massoud

El‐Mehasseb

et al. 2021

Water

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The extensive and random application of major organic pollutants, mainly pesticides, threatens ecosystems and human health. The present study was conducted to isolate and identify microorganisms from some water resources contaminated with pesticides. We investigated the ability of the identified microbes to grow in water spiked with dimethoate and methomyl. We also evaluated the potential effect of the identified microbial isolates on dimethoate and methomyl biodegradation in water. In addition, the total detoxification of dimethoate and methomyl residues in water after treatment with the most effective microbial isolates was confirmed using toxicity tests and analyzing biochemical parameters and histopathological changes in the kidney and liver of treated rats. The microbial isolates were identified as Xanthomonas campestris pv. Translucens and Aspergillus fumigates. Results showed that X. campestris pv. Translucens and A. fumigatus grow in media supplemented with dimethoate and methomyl faster than in other media without both pesticides. About 97.8% and 91.2% of dimethoate and 95% and 87.8% of methomyl (initial concentration of both 5 mg L−1) were biodegraded within 32 days of incubation with X. campestris pv. Translucens and A. fumigatus, respectively. There was no remaining toxicity in rats treated with dimethoate- and methomyl-contaminated water with respect to biochemical parameters and histopathological changes. Collectively, the identified bacterial isolate showed high potential for the complete degradation of dimethoate and methomyl residues in water.

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Section: Introductionmentioning

confidence: 99%

“…Dimethoate can be decomposed in alkaline solution (half-life (DT50) of 12 days) at pH 9 [8] or at temperatures higher than 96 • C [14]. Furthermore, the half-life of dimethoate in soil can be as long as 206 days at 25 • C in the absence of biodegradation [10].…”

Section: Introductionmentioning

confidence: 99%