Fenitrothion and esfenvalerate stability during corn and wheat sample processing

Detalhes bibliográficos
Autor(a) principal: Vásquez-Castro,Javier Alberto
Data de Publicação: 2008
Outros Autores: Baptista,Gilberto Casadei de, Trevizan,Luiz Roberto Pimentel, Gadanha Junior,Casimiro Dias
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000200008
Resumo: The presence of insecticide residues in cereals represents a risk for the consumer, because these substances are used in large scale to protect stored grains from the attack of pests. The effects of three processing methods for corn and wheat samples on the stability of stored-grain protective insecticides were here evaluated. Fenitrothion and esfenvalerate were applied so as to produce theoretical concentrations of 10 and 0.5 mg kg-1, respectively. Two hours after treatment, the grains were processed and deposition was analyzed by gas chromatography. Grain species did not influence insecticide stability. This stability was only dependent upon the processing method and insecticide type. Grains processed together with dry ice provided the greatest percentage of recovery for both insecticides. Regardless of the processing method, more esfenvalerate than fenitrothion was recovered, thus demonstrating the greater stability of the pyrethroid during this operation.
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spelling Fenitrothion and esfenvalerate stability during corn and wheat sample processingstored graininsecticide degradationdry icegas chromatographyThe presence of insecticide residues in cereals represents a risk for the consumer, because these substances are used in large scale to protect stored grains from the attack of pests. The effects of three processing methods for corn and wheat samples on the stability of stored-grain protective insecticides were here evaluated. Fenitrothion and esfenvalerate were applied so as to produce theoretical concentrations of 10 and 0.5 mg kg-1, respectively. Two hours after treatment, the grains were processed and deposition was analyzed by gas chromatography. Grain species did not influence insecticide stability. This stability was only dependent upon the processing method and insecticide type. Grains processed together with dry ice provided the greatest percentage of recovery for both insecticides. Regardless of the processing method, more esfenvalerate than fenitrothion was recovered, thus demonstrating the greater stability of the pyrethroid during this operation.Escola Superior de Agricultura "Luiz de Queiroz"2008-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000200008Scientia Agricola v.65 n.2 2008reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162008000200008info:eu-repo/semantics/openAccessVásquez-Castro,Javier AlbertoBaptista,Gilberto Casadei deTrevizan,Luiz Roberto PimentelGadanha Junior,Casimiro Diaseng2008-03-31T00:00:00Zoai:scielo:S0103-90162008000200008Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2008-03-31T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Fenitrothion and esfenvalerate stability during corn and wheat sample processing
title Fenitrothion and esfenvalerate stability during corn and wheat sample processing
spellingShingle Fenitrothion and esfenvalerate stability during corn and wheat sample processing
Vásquez-Castro,Javier Alberto
stored grain
insecticide degradation
dry ice
gas chromatography
title_short Fenitrothion and esfenvalerate stability during corn and wheat sample processing
title_full Fenitrothion and esfenvalerate stability during corn and wheat sample processing
title_fullStr Fenitrothion and esfenvalerate stability during corn and wheat sample processing
title_full_unstemmed Fenitrothion and esfenvalerate stability during corn and wheat sample processing
title_sort Fenitrothion and esfenvalerate stability during corn and wheat sample processing
author Vásquez-Castro,Javier Alberto
author_facet Vásquez-Castro,Javier Alberto
Baptista,Gilberto Casadei de
Trevizan,Luiz Roberto Pimentel
Gadanha Junior,Casimiro Dias
author_role author
author2 Baptista,Gilberto Casadei de
Trevizan,Luiz Roberto Pimentel
Gadanha Junior,Casimiro Dias
author2_role author
author
author
dc.contributor.author.fl_str_mv Vásquez-Castro,Javier Alberto
Baptista,Gilberto Casadei de
Trevizan,Luiz Roberto Pimentel
Gadanha Junior,Casimiro Dias
dc.subject.por.fl_str_mv stored grain
insecticide degradation
dry ice
gas chromatography
topic stored grain
insecticide degradation
dry ice
gas chromatography
description The presence of insecticide residues in cereals represents a risk for the consumer, because these substances are used in large scale to protect stored grains from the attack of pests. The effects of three processing methods for corn and wheat samples on the stability of stored-grain protective insecticides were here evaluated. Fenitrothion and esfenvalerate were applied so as to produce theoretical concentrations of 10 and 0.5 mg kg-1, respectively. Two hours after treatment, the grains were processed and deposition was analyzed by gas chromatography. Grain species did not influence insecticide stability. This stability was only dependent upon the processing method and insecticide type. Grains processed together with dry ice provided the greatest percentage of recovery for both insecticides. Regardless of the processing method, more esfenvalerate than fenitrothion was recovered, thus demonstrating the greater stability of the pyrethroid during this operation.
publishDate 2008
dc.date.none.fl_str_mv 2008-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162008000200008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.65 n.2 2008
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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