Allelopathic potential of Crinum americanum under different extractions condition

Detalhes bibliográficos
Autor(a) principal: Ribeiro, Jose Pedro Nepomuceno
Data de Publicação: 2011
Outros Autores: Lima, Maria Inês Salgueiro
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3272
Resumo: The long-term use reduces the efficiency of the traditional herbicides. The use of plant-extracted natural substances is an alternative more efficient and less aggressive to the environment. The allelochemicals of several species are considered to be possible plants for developing an organic herbicide. One of the major problems in this sense is obtaining botanical material in commercial quantities. Improving the extraction techniques is an important step, once it reduces the amount of botanical material needed. In this survey was tested several methods of aqueous extractions of dried leaves of Crinum americanum L., an Amarilidaceae with strong allelopathic properties. The time of extraction is not important for the allelopathic potential of the extracts. On the other hand, when the temperature during extraction was 40 e 60oC, leaded to extracts with stronger allelopathic potential. It is possible to improve the allelopathic potential using the filtered matter more than once.
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spelling Allelopathic potential of Crinum americanum under different extractions conditionPotencial alelopático de Crinum americanum L. sob diferentes condições de extraçãoExtractionsAllelochemicsNatural HerbicideTemperature.ExtraçãoAleloquímicosHerbicida naturalTemperatura.The long-term use reduces the efficiency of the traditional herbicides. The use of plant-extracted natural substances is an alternative more efficient and less aggressive to the environment. The allelochemicals of several species are considered to be possible plants for developing an organic herbicide. One of the major problems in this sense is obtaining botanical material in commercial quantities. Improving the extraction techniques is an important step, once it reduces the amount of botanical material needed. In this survey was tested several methods of aqueous extractions of dried leaves of Crinum americanum L., an Amarilidaceae with strong allelopathic properties. The time of extraction is not important for the allelopathic potential of the extracts. On the other hand, when the temperature during extraction was 40 e 60oC, leaded to extracts with stronger allelopathic potential. It is possible to improve the allelopathic potential using the filtered matter more than once.O uso prolongado torna os herbicidas tradicionais cada vez menos eficientes no combate às plantas daninhas. O uso de substâncias naturais extraídas das plantas é uma alternativa eficiente e menos agressiva ao meio ambiente. Os aleloquímicos de muitas espécies são possíveis matérias primas para o desenvolvimento de herbicidas orgânicos. Um dos principais problemas encontrados para a produção desses herbicidas é a obtenção de material botânico em quantidade comercial. Melhorar as técnicas de extração é um passo importante, uma vez que reduz a quantidade de matéria prima necessária. Nesse trabalho foram testados diversos tipos de extrações aquosas de folhas secas de Crinum americanum L., uma Amarilidacea com forte potencial alelopático. O tempo de extração é pouco importante para o potencial alelopático do extrato. Por outro lado, temperaturas de extração de 40 e 60oC levaram à produção de extratos que inibiram mais eficientemente a germinação. É possível aumentar o potencial alelopático dos extratos utilizando o material vegetal em pó mais de uma vez.UEL2011-07-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/327210.5433/1679-0359.2011v32n2p465Semina: Ciências Agrárias; Vol. 32 No. 2 (2011); 465-472Semina: Ciências Agrárias; v. 32 n. 2 (2011); 465-4721679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3272/8406Ribeiro, Jose Pedro NepomucenoLima, Maria Inês Salgueiroinfo:eu-repo/semantics/openAccess2016-03-09T17:00:21Zoai:ojs.pkp.sfu.ca:article/3272Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2016-03-09T17:00:21Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Allelopathic potential of Crinum americanum under different extractions condition
Potencial alelopático de Crinum americanum L. sob diferentes condições de extração
title Allelopathic potential of Crinum americanum under different extractions condition
spellingShingle Allelopathic potential of Crinum americanum under different extractions condition
Ribeiro, Jose Pedro Nepomuceno
Extractions
Allelochemics
Natural Herbicide
Temperature.
Extração
Aleloquímicos
Herbicida natural
Temperatura.
title_short Allelopathic potential of Crinum americanum under different extractions condition
title_full Allelopathic potential of Crinum americanum under different extractions condition
title_fullStr Allelopathic potential of Crinum americanum under different extractions condition
title_full_unstemmed Allelopathic potential of Crinum americanum under different extractions condition
title_sort Allelopathic potential of Crinum americanum under different extractions condition
author Ribeiro, Jose Pedro Nepomuceno
author_facet Ribeiro, Jose Pedro Nepomuceno
Lima, Maria Inês Salgueiro
author_role author
author2 Lima, Maria Inês Salgueiro
author2_role author
dc.contributor.author.fl_str_mv Ribeiro, Jose Pedro Nepomuceno
Lima, Maria Inês Salgueiro
dc.subject.por.fl_str_mv Extractions
Allelochemics
Natural Herbicide
Temperature.
Extração
Aleloquímicos
Herbicida natural
Temperatura.
topic Extractions
Allelochemics
Natural Herbicide
Temperature.
Extração
Aleloquímicos
Herbicida natural
Temperatura.
description The long-term use reduces the efficiency of the traditional herbicides. The use of plant-extracted natural substances is an alternative more efficient and less aggressive to the environment. The allelochemicals of several species are considered to be possible plants for developing an organic herbicide. One of the major problems in this sense is obtaining botanical material in commercial quantities. Improving the extraction techniques is an important step, once it reduces the amount of botanical material needed. In this survey was tested several methods of aqueous extractions of dried leaves of Crinum americanum L., an Amarilidaceae with strong allelopathic properties. The time of extraction is not important for the allelopathic potential of the extracts. On the other hand, when the temperature during extraction was 40 e 60oC, leaded to extracts with stronger allelopathic potential. It is possible to improve the allelopathic potential using the filtered matter more than once.
publishDate 2011
dc.date.none.fl_str_mv 2011-07-12
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3272
10.5433/1679-0359.2011v32n2p465
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3272
identifier_str_mv 10.5433/1679-0359.2011v32n2p465
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3272/8406
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 32 No. 2 (2011); 465-472
Semina: Ciências Agrárias; v. 32 n. 2 (2011); 465-472
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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