Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour

Chemical insecticides are commonly used to control insect pests in stored wheat. However, the presence of insecticide residues in food may endanger consumers. We studied the degradation and persistence of two insecticides, fenitrothion and esfenvalerate, in wheat grain, bran, and flour. The applicat...

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Autores principales:	J. Vásquez-Castro, G. De Baptista, C. Gadanha-Junior, J. Bracho-Pérez
Formato:	article
Lenguaje:	EN
Publicado:	Universidad Nacional Agraria La Molina 2020
Materias:	degradation persistence chromatography maximum residue limit preharvest interval. Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/4c9b864c77d641bfa9c8a2c8dca74ea9
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spelling	oai:doaj.org-article:4c9b864c77d641bfa9c8a2c8dca74ea92021-12-04T17:44:55ZDissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour2616-447710.21704/pja.v4i2.1510https://doaj.org/article/4c9b864c77d641bfa9c8a2c8dca74ea92020-08-01T00:00:00Zhttps://revistas.lamolina.edu.pe/index.php/jpagronomy/article/view/1510https://doaj.org/toc/2616-4477Chemical insecticides are commonly used to control insect pests in stored wheat. However, the presence of insecticide residues in food may endanger consumers. We studied the degradation and persistence of two insecticides, fenitrothion and esfenvalerate, in wheat grain, bran, and flour. The application system was calibrated to treat grain at theoretical concentrations of 10 and 0.5 mg kg−1 of fenitrothion and esfenvalerate, respectively. Samples treated with the insecticide mixture were collected at 0, 15, 30, 60, 90, 120, 180, 240, and 360 days after treatment. Samples were analyzed quantitatively by gas chromatography with an electron capture detector (ECD, Ni63). The experimental design was completely randomized with three replicates. Esfenvalerate was more persistent than fenitrothion, with the residues of both insecticides concentrated mainly in the bran, and with least amounts in the flour. The concentrations of fenitrothion residues during the 120-day preharvest interval exceeded the maximum residue limit (MRL) of 1 mg kg−1 set by Brazilian legislation. We discuss the factors that influence the degradation/persistence of fenitrothion and esfenvalerate.J. Vásquez-CastroG. De BaptistaC. Gadanha-JuniorJ. Bracho-PérezUniversidad Nacional Agraria La Molinaarticledegradationpersistencechromatographymaximum residue limitpreharvest interval.Agriculture (General)S1-972ENPeruvian Journal of Agronomy, Vol 4, Iss 2, Pp 40-47 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	degradation persistence chromatography maximum residue limit preharvest interval. Agriculture (General) S1-972
spellingShingle	degradation persistence chromatography maximum residue limit preharvest interval. Agriculture (General) S1-972 J. Vásquez-Castro G. De Baptista C. Gadanha-Junior J. Bracho-Pérez Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
description	Chemical insecticides are commonly used to control insect pests in stored wheat. However, the presence of insecticide residues in food may endanger consumers. We studied the degradation and persistence of two insecticides, fenitrothion and esfenvalerate, in wheat grain, bran, and flour. The application system was calibrated to treat grain at theoretical concentrations of 10 and 0.5 mg kg−1 of fenitrothion and esfenvalerate, respectively. Samples treated with the insecticide mixture were collected at 0, 15, 30, 60, 90, 120, 180, 240, and 360 days after treatment. Samples were analyzed quantitatively by gas chromatography with an electron capture detector (ECD, Ni63). The experimental design was completely randomized with three replicates. Esfenvalerate was more persistent than fenitrothion, with the residues of both insecticides concentrated mainly in the bran, and with least amounts in the flour. The concentrations of fenitrothion residues during the 120-day preharvest interval exceeded the maximum residue limit (MRL) of 1 mg kg−1 set by Brazilian legislation. We discuss the factors that influence the degradation/persistence of fenitrothion and esfenvalerate.
format	article
author	J. Vásquez-Castro G. De Baptista C. Gadanha-Junior J. Bracho-Pérez
author_facet	J. Vásquez-Castro G. De Baptista C. Gadanha-Junior J. Bracho-Pérez
author_sort	J. Vásquez-Castro
title	Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
title_short	Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
title_full	Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
title_fullStr	Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
title_full_unstemmed	Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
title_sort	dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour
publisher	Universidad Nacional Agraria La Molina
publishDate	2020
url	https://doaj.org/article/4c9b864c77d641bfa9c8a2c8dca74ea9
work_keys_str_mv	AT jvasquezcastro dissipationoffenitrothionandesfenvalerateinwheatgrainsbranandflour AT gdebaptista dissipationoffenitrothionandesfenvalerateinwheatgrainsbranandflour AT cgadanhajunior dissipationoffenitrothionandesfenvalerateinwheatgrainsbranandflour AT jbrachoperez dissipationoffenitrothionandesfenvalerateinwheatgrainsbranandflour
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Dissipation of fenitrothion and esfenvalerate in wheat grains, bran and flour

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