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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
02/12/2019 |
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Data da última atualização: |
02/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ASSALIN, M. R.; SANTOS, L. D. L. dos; SOUZA, D. R. C. de; ROSA, M. A.; MOLTOCARO, R. C. R.; CASTANHA, R. F.; DONAIRE, P. P. R.; DURAN, N. |
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Afiliação: |
MARCIA REGINA ASSALIN, CNPMA; LUCAS DANIEL L DOS SANTOS, FAPESP; DEBORA RENATA CASSOLI DE S DUTRA, CNPMA; MARIA APARECIDA ROSA, CNPMA; RAFAELA C RANGNI MOLTOCARO DUARTE, CNPMA; RODRIGO FERNANDES CASTANHA, CNPMA; PATRICIA PULCINI ROSVALD DONAIRE, UFABC; NELSON DURAN, UFABC. |
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Título: |
Ecotoxicity evaluation: preparation of poly-e-caprolactone and chitosannanoparticles as carriers of thiamethoxam pesticide. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Physics: Conference Series, v. 1323, n. 1, 2019. Edition of the Proceedings of VI NanoSAFE International Conference, Grenoble, Nov. 2018. Article 012017. |
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DOI: |
https://doi.org/10.1088/1742-6596/1323/1/012017 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The transmission of Huanglongbing (HLB) disease on citrus plants is through dissemination of the bacteria Candidatus Liberibacter ssp, by Diaphorina citri psyllid, its insect vector. Chemical control of the psyllids, and thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. This insecticide is water soluble, unstable and rapidly degraded by photolysis. Pesticide nanoformulation is one of the strategies to control release of active compound as well as protection for premature degradation. Thus, studies of the effectiveness of encapsulated pesticide formulations are extremely important for enabling its use in agriculture. This study reports the encapsulation of the insecticide thiamethoxam in polymeric particles from poly-?-caprolactone (PCL) and chitosan by double emulsion and solvent evaporation method using different concentrations of chitosan and two Pluronic (poloxamer) copolymers, F 127 and F68. These nanoparticles were characterized in terms of size, zeta potential, polydispersity, and encapsulation efficiency. The encapsulation efficiency, measured by liquid chromatography was 34%. The nanoparticles obtained from optimized conditions resulted in homogeneous and monodisperse particles with a positive superficial charge. The microalgae Raphidocelis subcapitata (bioindicator chloroficea) and microcrustacean Artemia salina, were used to evaluate the ecotoxicity of nanopesticide in comparison to pesticide already in the market. The ecotoxicity study demonstrated that nanopesticide was less toxic that commercial formulations in the studied conditions. MenosAbstract: The transmission of Huanglongbing (HLB) disease on citrus plants is through dissemination of the bacteria Candidatus Liberibacter ssp, by Diaphorina citri psyllid, its insect vector. Chemical control of the psyllids, and thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. This insecticide is water soluble, unstable and rapidly degraded by photolysis. Pesticide nanoformulation is one of the strategies to control release of active compound as well as protection for premature degradation. Thus, studies of the effectiveness of encapsulated pesticide formulations are extremely important for enabling its use in agriculture. This study reports the encapsulation of the insecticide thiamethoxam in polymeric particles from poly-?-caprolactone (PCL) and chitosan by double emulsion and solvent evaporation method using different concentrations of chitosan and two Pluronic (poloxamer) copolymers, F 127 and F68. These nanoparticles were characterized in terms of size, zeta potential, polydispersity, and encapsulation efficiency. The encapsulation efficiency, measured by liquid chromatography was 34%. The nanoparticles obtained from optimized conditions resulted in homogeneous and monodisperse particles with a positive superficial charge. The microalgae Raphidocelis subcapitata (bioindicator chloroficea) and microcrustacean Artemia salina, were used to evaluate the ecotoxicity of nanopesticide in comparison to pesticide already in ... Mostrar Tudo |
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Palavras-Chave: |
Nanopesticidas; Nanopesticides. |
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Thesagro: |
Inseticida; Toxidez. |
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Thesaurus Nal: |
Ecotoxicology; Nanoparticles; Pesticides; Toxicity. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205898/1/Assalin-Ecotoxicity-Evaluation-2019.pdf
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Marc: |
LEADER 02692naa a2200313 a 4500
001 2115617
005 2019-12-02
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1088/1742-6596/1323/1/012017$2DOI
100 1 $aASSALIN, M. R.
245 $aEcotoxicity evaluation$bpreparation of poly-e-caprolactone and chitosannanoparticles as carriers of thiamethoxam pesticide.$h[electronic resource]
260 $c2019
520 $aAbstract: The transmission of Huanglongbing (HLB) disease on citrus plants is through dissemination of the bacteria Candidatus Liberibacter ssp, by Diaphorina citri psyllid, its insect vector. Chemical control of the psyllids, and thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. This insecticide is water soluble, unstable and rapidly degraded by photolysis. Pesticide nanoformulation is one of the strategies to control release of active compound as well as protection for premature degradation. Thus, studies of the effectiveness of encapsulated pesticide formulations are extremely important for enabling its use in agriculture. This study reports the encapsulation of the insecticide thiamethoxam in polymeric particles from poly-?-caprolactone (PCL) and chitosan by double emulsion and solvent evaporation method using different concentrations of chitosan and two Pluronic (poloxamer) copolymers, F 127 and F68. These nanoparticles were characterized in terms of size, zeta potential, polydispersity, and encapsulation efficiency. The encapsulation efficiency, measured by liquid chromatography was 34%. The nanoparticles obtained from optimized conditions resulted in homogeneous and monodisperse particles with a positive superficial charge. The microalgae Raphidocelis subcapitata (bioindicator chloroficea) and microcrustacean Artemia salina, were used to evaluate the ecotoxicity of nanopesticide in comparison to pesticide already in the market. The ecotoxicity study demonstrated that nanopesticide was less toxic that commercial formulations in the studied conditions.
650 $aEcotoxicology
650 $aNanoparticles
650 $aPesticides
650 $aToxicity
650 $aInseticida
650 $aToxidez
653 $aNanopesticidas
653 $aNanopesticides
700 1 $aSANTOS, L. D. L. dos
700 1 $aSOUZA, D. R. C. de
700 1 $aROSA, M. A.
700 1 $aMOLTOCARO, R. C. R.
700 1 $aCASTANHA, R. F.
700 1 $aDONAIRE, P. P. R.
700 1 $aDURAN, N.
773 $tJournal of Physics: Conference Series$gv. 1323, n. 1, 2019. Edition of the Proceedings of VI NanoSAFE International Conference, Grenoble, Nov. 2018. Article 012017.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
27/02/2013 |
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Data da última atualização: |
27/02/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
VENÂNCIO, J. B.; ARAÚJO, W. F.; CHAGAS, E. A.; BACELAR-LIMA, C. G.; PRADO, R. J. do. |
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Afiliação: |
EDVAN ALVES CHAGAS, CPAF-RR. |
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Título: |
Pigmentos fotossintéticos em cultivares de abacaxizeiro sob malhas de sombreamento coloridas. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF, 2012. |
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Idioma: |
Português |
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Palavras-Chave: |
Abacaxizeiro. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/77517/1/Jefferson-2-pigmentos-fotossinteticos.pdf
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Marc: |
LEADER 00548nam a2200157 a 4500
001 1951509
005 2013-02-27
008 2012 bl uuuu u00u1 u #d
100 1 $aVENÂNCIO, J. B.
245 $aPigmentos fotossintéticos em cultivares de abacaxizeiro sob malhas de sombreamento coloridas.
260 $aIn: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF$c2012
653 $aAbacaxizeiro
700 1 $aARAÚJO, W. F.
700 1 $aCHAGAS, E. A.
700 1 $aBACELAR-LIMA, C. G.
700 1 $aPRADO, R. J. do
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