EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi)
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional Universidade Franciscana |
Texto Completo: | http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/555 |
Resumo: | Termites represent a serious threat to the environment, to the agriculture and to the urban environment. Its control is done mainly by the use of chemical pesticides which, alt-hough effective, can cause serious damages to the environment and human beings. An alterna-tive to the use of these pesticides are natural products, such as essential oils with insecticidal action. Although effective, essential oils are unstable, not much soluble in water and degrade by the action of light, oxygen and even moderate temperatures. Thus, the nanostructure of essential oils could solve these problems and make sure they are effective. In this context, the objective of this work was to evaluate for the first time the effects of nanostructures of essen-tial oils on subterranean termites (Coptotermes gestroi). The nanoemulsions of Cymbopogon flexuosus and Eucalyptus globulus presented mean particle diameter of 94.9 and 79.8nm re-spectively, while the mean diameter of the solid lipid nanoparticles of Melaleuca alternifolia was 148.2nm. The value of PDI in all nanostructures was less than 0.3; zeta potential between -8.6 and -8.8 and pH between 4.0 and 5.9. The repellency test revealed that among the nanostructures tested, the solid lipid nanoparticles of M. alternifolia had the highest repellent index (71.6%). Regarding the termite bioassay, there was no significant difference among any of the groups tested in relation to wood consumption. When we evaluated the mortality of the termite mortality, there was a significant difference between control group (wood without treatment) and the wood treated with the solid lipid nanoparticles of M. alternifolia. In the scale of the American Association of Protection to Wood, the rate of the control group was 4 (very severe attack) and of the group treated by the nanoparticles was 9 (light attack). The present study showed that the nanostructure of essential oils with potential insecticidal action may represent a promising tool in fighting termites. |
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Santos, Roberto Christ ViannaLeonardo, Ana Maria CostaGiongo, Janice LuehringFernandes, Liana da SilvaClerici, Dariane Jornada2018-08-17T19:08:32Z2017-03-24Clerici, Dariane Jornada. EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi). 2017. 65f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS .http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/555Termites represent a serious threat to the environment, to the agriculture and to the urban environment. Its control is done mainly by the use of chemical pesticides which, alt-hough effective, can cause serious damages to the environment and human beings. An alterna-tive to the use of these pesticides are natural products, such as essential oils with insecticidal action. Although effective, essential oils are unstable, not much soluble in water and degrade by the action of light, oxygen and even moderate temperatures. Thus, the nanostructure of essential oils could solve these problems and make sure they are effective. In this context, the objective of this work was to evaluate for the first time the effects of nanostructures of essen-tial oils on subterranean termites (Coptotermes gestroi). The nanoemulsions of Cymbopogon flexuosus and Eucalyptus globulus presented mean particle diameter of 94.9 and 79.8nm re-spectively, while the mean diameter of the solid lipid nanoparticles of Melaleuca alternifolia was 148.2nm. The value of PDI in all nanostructures was less than 0.3; zeta potential between -8.6 and -8.8 and pH between 4.0 and 5.9. The repellency test revealed that among the nanostructures tested, the solid lipid nanoparticles of M. alternifolia had the highest repellent index (71.6%). Regarding the termite bioassay, there was no significant difference among any of the groups tested in relation to wood consumption. When we evaluated the mortality of the termite mortality, there was a significant difference between control group (wood without treatment) and the wood treated with the solid lipid nanoparticles of M. alternifolia. In the scale of the American Association of Protection to Wood, the rate of the control group was 4 (very severe attack) and of the group treated by the nanoparticles was 9 (light attack). The present study showed that the nanostructure of essential oils with potential insecticidal action may represent a promising tool in fighting termites.Os cupins representam uma grave ameaça para o meio ambiente, agricultura e meio urbano. Seu controle é realizado principalmente pelo emprego de pesticidas químicos, que apesar de eficazes, podem causar sérios danos ao meio ambiente e seres humanos. Uma alter-nativa ao uso desses pesticidas são os produtos naturais, como por exemplo, os óleos essenci-ais com ação inseticida. Apesar de eficazes, os óleos essenciais são instáveis, pouco solúveis em água e degradam-se pela ação da luz, oxigênio e até mesmo temperaturas moderadas. As-sim, a nanoestruturação de óleos essenciais poderia contornar esses problemas e garantir sua eficácia. Neste contexto, o objetivo do presente trabalho foi avaliar pela primeira vez, os efei-tos de nanoestruturas de óleos essenciais em cupins subterrâneos (Coptotermes gestroi). As nanoemulsões de Cymbopogon flexuosus e Eucalyptus globulus apresentaram diâmetro médio de partícula de 94,9 e 79,8nm respectivamente, enquanto que o diâmetro médio das nanopar-tículas lipídicas sólidas de Melaleuca alternifolia foi de 148,2nm. O valor de IPD em todas as nanoestruturas foi menor que 0,3; potencial zeta entre -8,6 e -8,8 e pH entre 4,0 e 5,9. O teste de repelência revelou que dentre as nanoestruturas testadas, as nanopartículas lipídicas sólidas de M. alternifolia obtiveram o índice repelente mais alto (71,6%). Em relação ao bioensaio com cupins, não houve diferença significativa entre nenhum dos grupos testados em relação ao consumo da madeira. Quando avaliada a mortalidade dos cupins, ocorreu diferença signifi-cativa entre grupo controle (madeira sem tratamento) e a madeira tratada com as nanopartícu-las lipídicas sólidas de M. alternifolia. Na escala da Associação Americana de Proteção à Ma-deira a taxa do grupo controle foi 4 (ataque muito severo) e do grupo tratado pelas nanopartí-culas foi 9 (ataque leve). O presente estudo mostrou que a nanoestruturação de óleos essenci-ais com potencial ação inseticida pode representar uma promissora ferramenta no combate aos cupins.Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-17T19:08:32Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_DarianeJornadaClerici.pdf: 1054628 bytes, checksum: 65a3b3fabb34be04965b9a0f42d8c8a9 (MD5)Made available in DSpace on 2018-08-17T19:08:32Z (GMT). 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dc.title.por.fl_str_mv |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
title |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
spellingShingle |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) Clerici, Dariane Jornada Cymbopogon flexuosus. Eucalyptus globulus. Cupins. Melaleuca al-ternifolia. Nanoemulsões. Nanopartículas Lipídicas Sólidas. Cymbopogon flexuosus. Eucalyptus globulus. Termites. Melaleuca alterni-folia. Nanoemulsions. Solid Lipid Nanoparticles. Biociências e Nanomateriais |
title_short |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
title_full |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
title_fullStr |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
title_full_unstemmed |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
title_sort |
EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi) |
author |
Clerici, Dariane Jornada |
author_facet |
Clerici, Dariane Jornada |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Santos, Roberto Christ Vianna |
dc.contributor.advisor-co1.fl_str_mv |
Leonardo, Ana Maria Costa |
dc.contributor.referee1.fl_str_mv |
Giongo, Janice Luehring |
dc.contributor.referee2.fl_str_mv |
Fernandes, Liana da Silva |
dc.contributor.author.fl_str_mv |
Clerici, Dariane Jornada |
contributor_str_mv |
Santos, Roberto Christ Vianna Leonardo, Ana Maria Costa Giongo, Janice Luehring Fernandes, Liana da Silva |
dc.subject.por.fl_str_mv |
Cymbopogon flexuosus. Eucalyptus globulus. Cupins. Melaleuca al-ternifolia. Nanoemulsões. Nanopartículas Lipídicas Sólidas. |
topic |
Cymbopogon flexuosus. Eucalyptus globulus. Cupins. Melaleuca al-ternifolia. Nanoemulsões. Nanopartículas Lipídicas Sólidas. Cymbopogon flexuosus. Eucalyptus globulus. Termites. Melaleuca alterni-folia. Nanoemulsions. Solid Lipid Nanoparticles. Biociências e Nanomateriais |
dc.subject.eng.fl_str_mv |
Cymbopogon flexuosus. Eucalyptus globulus. Termites. Melaleuca alterni-folia. Nanoemulsions. Solid Lipid Nanoparticles. |
dc.subject.cnpq.fl_str_mv |
Biociências e Nanomateriais |
description |
Termites represent a serious threat to the environment, to the agriculture and to the urban environment. Its control is done mainly by the use of chemical pesticides which, alt-hough effective, can cause serious damages to the environment and human beings. An alterna-tive to the use of these pesticides are natural products, such as essential oils with insecticidal action. Although effective, essential oils are unstable, not much soluble in water and degrade by the action of light, oxygen and even moderate temperatures. Thus, the nanostructure of essential oils could solve these problems and make sure they are effective. In this context, the objective of this work was to evaluate for the first time the effects of nanostructures of essen-tial oils on subterranean termites (Coptotermes gestroi). The nanoemulsions of Cymbopogon flexuosus and Eucalyptus globulus presented mean particle diameter of 94.9 and 79.8nm re-spectively, while the mean diameter of the solid lipid nanoparticles of Melaleuca alternifolia was 148.2nm. The value of PDI in all nanostructures was less than 0.3; zeta potential between -8.6 and -8.8 and pH between 4.0 and 5.9. The repellency test revealed that among the nanostructures tested, the solid lipid nanoparticles of M. alternifolia had the highest repellent index (71.6%). Regarding the termite bioassay, there was no significant difference among any of the groups tested in relation to wood consumption. When we evaluated the mortality of the termite mortality, there was a significant difference between control group (wood without treatment) and the wood treated with the solid lipid nanoparticles of M. alternifolia. In the scale of the American Association of Protection to Wood, the rate of the control group was 4 (very severe attack) and of the group treated by the nanoparticles was 9 (light attack). The present study showed that the nanostructure of essential oils with potential insecticidal action may represent a promising tool in fighting termites. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-03-24 |
dc.date.accessioned.fl_str_mv |
2018-08-17T19:08:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Clerici, Dariane Jornada. EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi). 2017. 65f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS . |
dc.identifier.uri.fl_str_mv |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/555 |
identifier_str_mv |
Clerici, Dariane Jornada. EFEITOS DE DIFERENTES SISTEMAS NANOESTRUTURADOS DE ÓLEOS ESSENCIAIS EM CUPINS SUBTERRÂNEOS (Coptotermes gestroi). 2017. 65f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS . |
url |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/555 |
dc.language.iso.fl_str_mv |
por |
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por |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Centro Universitário Franciscano |
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Programa de Pós-Graduação em Nanociências |
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UNIFRA |
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Brasil |
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Biociências e Nanomateriais |
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Centro Universitário Franciscano |
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