Comparative Studies of Delthametrin Acute Toxicity in Exotic and Brazilian Fish

Osti, S. C.; Varoli, Franci Mary Fantinato; Matushima, Eliana Reiko; Bernardi, M. M.

doi:10.5132/jbse.2007.02.002

Cited by 11 publications

(2 citation statements)

References 9 publications

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“…O metabolismo dos peixes é amplamente oxidativo (BASER et al, 2003;OSTI et al, 2007;POLAT et al, 2002;VIRAN et al, 2003;VELISEK et al, 2007), possibilitando, portanto, a geração de espécies reativas de oxigênio, e tendo como resultado o estresse oxidativo.…”

Section: Discussão E Discussõesunclassified

Avaliação da função hepática de peixes Rhamdia quelen expostos aos desreguladores endócrinos estriol e estrona

Harzer¹,

Stipp²,

Herrerias³

2015

REV

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Section: Discussão E Discussõesunclassified

Avaliação da função hepática de peixes Rhamdia quelen expostos aos desreguladores endócrinos estriol e estrona

Harzer¹,

Stipp²,

Herrerias³

2015

REV

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“…Pyrethroid insecticides were previously considered safe over other insecticides due to its low mammalian toxicity (Ansari et al., 2011; Ruan et al., 2013). However, pyrethroid insecticides have been observed to be highly acute toxicity to fish, aquatic invertebrates (Osti et al., 2007; Sánchez‐Fortún & Barahona, 2005; Tallur et al., 2008), and other nontarget organisms (Saha & Kaviraj, 2008), so that they caused great slaughter in a short period time. Additionally, some researches showed that pyrethroids are not as safe as believed.…”

Section: Introductionmentioning

confidence: 99%

Purification and characterization of a novel cypermethrin‐hydrolyzing esterase from Bacillus licheniformis B‐1

Zhang

Lai

Zhu

et al. 2021

Journal of Food Science

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Cypermethrin (CY) is a synthetic pyrethroid widely used to control insect pests and it elicits a toxic effect on the human body. In this study, Bacillus licheniformis B-1 isolated from tea garden soil was used to degrade CY effectively. A specific enzyme was mainly localized in the extracellular compartments of B-1. This enzyme was identified as an esterase that could be produced without CY. The enzyme was purified 23.03-fold to apparent homogeneity with 8.38% overall recovery by ammonium sulfate precipitation, anion exchange chromatography, and gel filtration chromatography. The molecular mass of the CYdegrading enzyme was 66.4 kDa, and its optimal pH and temperature were 8.5 and 40 • C, respectively. Appropriate Zn 2+ , Mn 2+ , Mg 2+ , Tween 80, SDS, Triton X-100, and BSA concentrations could greatly increase the activity of this enzyme.By contrast, EDTA, 1,10-phenanthroline, NaF, and PMSF strongly inhibited its activity. The purified enzyme showed K m and V max values were 5.532 nmol/mL and 33.445 nmol/min. The CY residue in lettuce and cherry tomatoes could be removed more than 50% under the conditions of the treatment concentration for 500 mg/L and the enzyme preparation dilution of 100 times. These results suggested that the CY-degrading enzyme, a constitutive enzyme that mainly exists in the extracellular space, was a novel esterase that might be used to detoxify CY, and could remove CY in vegetables effectively. Practical Application: Our research found a novel cypermethrin-hydrolyzing esterase from Bacillus licheniformis B-1 and proved that the enzyme could remove cypermethrin in vegetables effectively.

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Monitoring and Evaluation of Pesticide Residues in Aquatic Systems

Mondal¹,

Kole

2020

Sustainable Agriculture Reviews

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Comparative Studies of Delthametrin Acute Toxicity in Exotic and Brazilian Fish

Cited by 11 publications

References 9 publications

Avaliação da função hepática de peixes Rhamdia quelen expostos aos desreguladores endócrinos estriol e estrona

Avaliação da função hepática de peixes Rhamdia quelen expostos aos desreguladores endócrinos estriol e estrona

Purification and characterization of a novel cypermethrin‐hydrolyzing esterase from Bacillus licheniformis B‐1

Monitoring and Evaluation of Pesticide Residues in Aquatic Systems

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