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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
08/01/2019 |
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Data da última atualização: |
30/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ASSALIN, M. R.; SOUZA, D. R. C. de; ROSA, M. A.; DUARTE, R. C. R. M.; DONAIRE, P.; DURAN, N. |
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Afiliação: |
MARCIA REGINA ASSALIN, CNPMA; DEBORA RENATA CASSOLI DE S DUTRA, CNPMA; MARIA APARECIDA ROSA, CNPMA; R. C. R. M. Duarte; Patricia P. R. Donaire, Center of Natural and Human Sciences, Universidade Federal do ABC, Santo Andre, SP; Nelson Duran, Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology/UNICAMP; NanoBioss, Institute of Chemistry/UNICAMP; Nanomedicine Research Unit/UFABC. |
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Título: |
Ecotoxicity evaluation: preparation of poly-E-caprolactone and chitosan nanoparticles as carriers of thiametoxam pesticide. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91473MA. |
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Páginas: |
p. 198. |
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Idioma: |
Português |
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Conteúdo: |
Huanglongbing (HLB) is probably the most serious disease of citrus, nowadays. The severity of disease is mainly the rapid and efficient dissemination of the bacteria associated with HLB by psyllids Diaphorina citri (D. citri) and the absence of genetic resistance in citrus. Chemical control is the main way to control the psyllids, and there are different insecticides registered for this purpose. Thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. Pesticide formulations nanocapsules allow a controlled release of active as well as protection against their premature degradation, allowing the use of conventional insecticide in a more sustainable way. 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, polydispersity, and encapsulation efficiency. The microalgae Pseudokirchneriella subcapitata (bioindicator chloroficea) was used to evaluate to ecotoxicity of nanopesticide in comparation of commercial formulation. The nanopesticide obtained resulted in homogeneous and monodisperse particles, with the mean diameter obtained of 166.3 nm, polydispersity indices were lower than 0.4 and positive superficial charge (+25 mv).The encapsulation efficiency, measured by by liquid chromatography, it was 34%. The ecotoxicity results demonstrated that the nanopesticide was less toxic that commercial formulations, in the same concentrations. MenosHuanglongbing (HLB) is probably the most serious disease of citrus, nowadays. The severity of disease is mainly the rapid and efficient dissemination of the bacteria associated with HLB by psyllids Diaphorina citri (D. citri) and the absence of genetic resistance in citrus. Chemical control is the main way to control the psyllids, and there are different insecticides registered for this purpose. Thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. Pesticide formulations nanocapsules allow a controlled release of active as well as protection against their premature degradation, allowing the use of conventional insecticide in a more sustainable way. 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, polydispersity, and encapsulation efficiency. The microalgae Pseudokirchneriella subcapitata (bioindicator chloroficea) was used to evaluate to ecotoxicity of nanopesticide in comparation of commercial formulation. The nanopesticide obtained resulted in homogeneous and monodisperse particles, with the mean diameter ... Mostrar Tudo |
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Palavras-Chave: |
HBL. |
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Thesagro: |
Pesticida; Toxicologia. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189957/1/RA-AssalinMR-et-al-Nanosafe2018-p198.pdf
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Marc: |
LEADER 02625nam a2200217 a 4500
001 2103279
005 2023-03-30
008 2018 bl uuuu u00u1 u #d
100 1 $aASSALIN, M. R.
245 $aEcotoxicity evaluation$bpreparation of poly-E-caprolactone and chitosan nanoparticles as carriers of thiametoxam pesticide.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91473MA.$c2018
300 $ap. 198.
520 $aHuanglongbing (HLB) is probably the most serious disease of citrus, nowadays. The severity of disease is mainly the rapid and efficient dissemination of the bacteria associated with HLB by psyllids Diaphorina citri (D. citri) and the absence of genetic resistance in citrus. Chemical control is the main way to control the psyllids, and there are different insecticides registered for this purpose. Thiamethoxam (neonicotinoid insecticide) is one of the active ingredients used in the control of HLB. Pesticide formulations nanocapsules allow a controlled release of active as well as protection against their premature degradation, allowing the use of conventional insecticide in a more sustainable way. 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, polydispersity, and encapsulation efficiency. The microalgae Pseudokirchneriella subcapitata (bioindicator chloroficea) was used to evaluate to ecotoxicity of nanopesticide in comparation of commercial formulation. The nanopesticide obtained resulted in homogeneous and monodisperse particles, with the mean diameter obtained of 166.3 nm, polydispersity indices were lower than 0.4 and positive superficial charge (+25 mv).The encapsulation efficiency, measured by by liquid chromatography, it was 34%. The ecotoxicity results demonstrated that the nanopesticide was less toxic that commercial formulations, in the same concentrations.
650 $aPesticida
650 $aToxicologia
653 $aHBL
700 1 $aSOUZA, D. R. C. de
700 1 $aROSA, M. A.
700 1 $aDUARTE, R. C. R. M.
700 1 $aDONAIRE, P.
700 1 $aDURAN, N.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 18 | |
| 9. |  | ASSALIN, M. R.; SOUZA, D. R. C. de; ROSA, M. A.; MOLTOCARO, R. C. R.; DONAIRE, P.; DURAN, N. Estudos preliminares aplicados ao nanoencapsulamento de inseticidas neonicotinóides: tiametoxam. In: WORKSHOP DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais... São Carlos: Embrapa Instrumentação, 2017. p. 261-264.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 11. | | ASSALIN, M. R.; MORAES, S. G. de; QUEIROZ, S. C. do N. de; FERRACINI, V. L.; DURÁN, N. Studies on degradation of glyphosate by several oxidative chemical processes: Ozonation, photolysis and heterogeneous photocatalysis. Journal of Environmental Science and Health, Part B, v. 45, n. 1, p. 89-94, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 12. | | ASSALIN, M. R.; SOUZA, D. R. C. de; ROSA, M. A.; MOLTOCARO, R. C. R.; CASTANHA, R. F.; VILELA, E. S. D.; TASIC, L.; DURÁN, N. Thiamethoxam used as nanopesticide for the effective management of Diaphorina citri psyllid: an environmental-friendly formulation. International Journal of Pest Management, p.1-9, 2022. Online first.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Meio Ambiente. |
|  |
| 13. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R.; CASTRO, V. L. S. S. de; UMBUZEIRO, G. A.; BARBIERI, E.; DURÁN, M.; MELO, P. S.; ALVES, O. L. Interlab study on nanotoxicology of representative graphene oxide. In: INTERNATIONAL CONFERENCE ON SAFE PRODUCTION AND USE OF NANOMATERIALS, 4, 2014, Grenoble. Book of Abstract... Grenoble: Plate-Forme Nano Sécurité, 2014.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 14. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R. de; CASTRO, V. L. S. S. de; UMBUZEIRO, G. de A.; BARBIERI, E.; DURÁN, M.; MELO, P. da S.; ALVES, O. L.; FÁVARO, W. J. Interlab study on nanotoxicology of representative graphene oxide. Journal of Physics, Bristol, v. 617, p. 1-9, 2015. Edition of the proceedings 4th International Conference on Safe Production and Use Nanomaterials (Nanosafe 2014) 18-20 November 2014, held a Grenoble, France.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 15. | | 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. Ecotoxicity evaluation: preparation of poly-e-caprolactone and chitosannanoparticles as carriers of thiamethoxam pesticide. Journal of Physics: Conference Series, v. 1323, n. 1, 2019. Edition of the Proceedings of VI NanoSAFE International Conference, Grenoble, Nov. 2018. Article 012017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 16. | | JESUS-HITZSCHKY, K. R. e; ASSIS, O. B. G. de; RODRIGUES, G. S.; NESHICH, G.; DURÁN, N.; ZACKIEWICZ, M.; BONACELLI, M. B. M.; PLONSKI, G. A.; GUTERRES, S. S. Metodologia para avaliação dos impactos éticos, sociais e ambientais das nanotecnologias. In: SIMPÓSIO SOBRE INOVAÇÃO E CRIATIVIDADE CIENTÍFICA NA EMBRAPA, 2., 2010, Brasília, DF. Resumos... Brasília, DF: Embrapa, 2010. Poster 051.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 17. | | ASSALIN, M. R.; SANTOS, L. D. L. dos; SOUZA, D. R. C. de; ROSA, M. A.; DUARTE, R. C. R. M.; CASTANHA, R. F.; DONAIRE, P. P. R.; DURAN, N. Nanoformulation as a tool for improvement of thiamethoxam encapsulation and evaluation of ecotoxicological impacts. Energy, Ecology and Environment, v. 4, n. 6. p. 310-317, 2019.| Tipo: Nota Técnica/Nota Científica |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 18. | | SILVA JUNIOR, E. C. da; DURAN, N. M.; LESSA, J. H. de L.; RIBEIRO, P. G.; WADT, L. H. de O.; SILVA, K. E. da; LIMA, R. M. B. de; BATISTA, K. D.; GUEDES, M. C.; OLIVEIRA JUNIOR, R. C. de; CARVALHO, H. W. P. de; REIS, A. R. dos; LOPES, G.; GUILHERME, L. R. G. Unraveling the accumulation and localization of selenium and barium in Brazil nuts using spectroanalytical techniques. Journal of Food Composition and Analysis, v. 106, art. 104329, March 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Rondônia; Embrapa Roraima. |
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| Registros recuperados : 18 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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