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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
31/03/2017 |
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Data da última atualização: |
24/04/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, B. D.; ROJAS, O. J.; MAGALHAES, W. L. E. |
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Afiliação: |
BRUNO D. MATTOS, Doutorando da UFPR; ORLANDO J. ROJAS, School of Chemical Technology, Aalto University; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Biogenic silica nanoparticles loaded with neem bark extract as green, slow-release biocide. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Cleaner Production, v. 142, n. 4, p. 4206-4213, Jan. 2017. |
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DOI: |
http://dx.doi.org/10.1016/j.jclepro.2016.11.183 |
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Idioma: |
Inglês |
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Conteúdo: |
Biogenic silica derived from Equisetum arvense was used as a carrier of an eco-friendly biocide consisting of a neem bark extract cross-linked with polycarboxylic acids. Infrared spectroscopy indicated the presence of ester bonds between the silica support and the loaded bark extract. Surface area analysis, porosimetry and microscopy confirmed a high level of biocide loading in the silica support. Furthermore, compared with the unloaded biogenic silica nanoparticles, a better thermal stability was determined for the system carrying the extracted compounds. Experiments consisting of three sequential release profiles showed full mass release after 20 days of unloaded neem while the extract loaded in the solid support reached only 60e75% released after 30 days. A four-fold improvement in the neem extract stability was observed in aqueous media if loaded in the silica support. The neem compounds released from silica showed a satisfactory scavenging activity over 50% of DPPH free radical, and could cause the mortality of the major workers of Acromyrmex crassispinus ant specie. |
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Palavras-Chave: |
Biocida; Eco-friendly supports; Green biocides; Kinetic models. |
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Thesagro: |
Nim. |
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Thesaurus Nal: |
Azadirachtin; Biocides; Pest control; Sustainable technology. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01895naa a2200265 a 4500
001 2067969
005 2017-04-24
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.jclepro.2016.11.183$2DOI
100 1 $aMATTOS, B. D.
245 $aBiogenic silica nanoparticles loaded with neem bark extract as green, slow-release biocide.$h[electronic resource]
260 $c2017
520 $aBiogenic silica derived from Equisetum arvense was used as a carrier of an eco-friendly biocide consisting of a neem bark extract cross-linked with polycarboxylic acids. Infrared spectroscopy indicated the presence of ester bonds between the silica support and the loaded bark extract. Surface area analysis, porosimetry and microscopy confirmed a high level of biocide loading in the silica support. Furthermore, compared with the unloaded biogenic silica nanoparticles, a better thermal stability was determined for the system carrying the extracted compounds. Experiments consisting of three sequential release profiles showed full mass release after 20 days of unloaded neem while the extract loaded in the solid support reached only 60e75% released after 30 days. A four-fold improvement in the neem extract stability was observed in aqueous media if loaded in the silica support. The neem compounds released from silica showed a satisfactory scavenging activity over 50% of DPPH free radical, and could cause the mortality of the major workers of Acromyrmex crassispinus ant specie.
650 $aAzadirachtin
650 $aBiocides
650 $aPest control
650 $aSustainable technology
650 $aNim
653 $aBiocida
653 $aEco-friendly supports
653 $aGreen biocides
653 $aKinetic models
700 1 $aROJAS, O. J.
700 1 $aMAGALHAES, W. L. E.
773 $tJournal of Cleaner Production$gv. 142, n. 4, p. 4206-4213, Jan. 2017.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
07/04/2004 |
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Data da última atualização: |
17/01/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, L. J.; HOFFMANN-CAMPO, C. B. |
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Título: |
Sources of soybean resistance to Sternechus subsignatus. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
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Páginas: |
p. 292. |
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Série: |
(Embrapa Soja. Documentos, 228). |
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Idioma: |
Inglês |
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Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
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Conteúdo: |
The gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-95-1159 were less damaged than others, but only PI 227687 was significantly different (F=4,42; P<0,001) compared to the control ('Embrapa 4'). In 2001/02, the total damage (feeding marks + leaf cut + oviposition + dead plant) was lower in 'IAC-100', PI 171451, PI 227687 and 'IAC-24' than in 'BR-16'. In the 2002/03 season, greenhouse multiple-choice test, the most resistant genotypes were PI227687, BRQ 96-3065, KI-S 601 and Ocepar 17. In the field, during this season, PI227687, BRQ 96-3065 and CS 201 performed better in the presence of S. subsignatus. The results suggest that non-preference is one of the resistance mechanisms of soybean to S. subsignatus. Futhermore PI 227687 appears to be a source of potential resistance to be used by breeders in insect resistance programs. Other genotypes such as BRQ 95-3065 and PI 171451 also showed some potential, but to confirm this more studies are necessary. MenosThe gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-... Mostrar Tudo |
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Thesagro: |
Soja. |
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Thesaurus NAL: |
Soybeans. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190835/1/ID-23765.pdf
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Marc: |
LEADER 03285nam a2200181 a 4500
001 1466837
005 2019-01-17
008 2004 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. J.
245 $aSources of soybean resistance to Sternechus subsignatus.$h[electronic resource]
260 $aIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean$c2004
300 $ap. 292.
490 $a(Embrapa Soja. Documentos, 228).
500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
520 $aThe gall-maker and stem borer, S. subsignatus, rose from a minor to an important pest as soybean fields expanded to new areas and cultivation systems changed. The chemical control of this pest is difficult due to its concealed habit in the pre- and post-embryonic stage. Therefore, other control alternatives are necessary, specially in large fields. Hence, sources of soybean resistance to S. subsignatus have been searched for at Embrapa Soybean, Londrina, Paraná State. Thirty genotypes were tested under greenhouse and field conditions in completely randomized no-choice and randomized block multiple-choice design experiments. Tests were performed during four seasons with different genotypes each year, as genotypes not showing resistance were replaced by others of interest. The susceptible control genotypes used in the 1999/00 and 2000/01 seasons were 'Embrapa 4' and 'BR-16'in 2001/02 and 2002/03. In 2002/03, besides greenhouse tests (no-choice and multiple-choice), a field-cage test was performed with artificial infestations of S. subsignatus adults. Genotypes were not significantly different from the control genotype at any season in no-choice test. In general, multiple-choice tests promoted a better discrimination between genotypes than no-choice tests. In the 1999/00 season, greenhouse multiple-choice test, BRQ 96-3065 and PI 227687 were less damaged by S. subsignatus than other tested genotypes. In the 2000/01 greenhouse multiple-choice test, PI 227687, BRQ-96-3065 and BR-95-1159 were less damaged than others, but only PI 227687 was significantly different (F=4,42; P<0,001) compared to the control ('Embrapa 4'). In 2001/02, the total damage (feeding marks + leaf cut + oviposition + dead plant) was lower in 'IAC-100', PI 171451, PI 227687 and 'IAC-24' than in 'BR-16'. In the 2002/03 season, greenhouse multiple-choice test, the most resistant genotypes were PI227687, BRQ 96-3065, KI-S 601 and Ocepar 17. In the field, during this season, PI227687, BRQ 96-3065 and CS 201 performed better in the presence of S. subsignatus. The results suggest that non-preference is one of the resistance mechanisms of soybean to S. subsignatus. Futhermore PI 227687 appears to be a source of potential resistance to be used by breeders in insect resistance programs. Other genotypes such as BRQ 95-3065 and PI 171451 also showed some potential, but to confirm this more studies are necessary.
650 $aSoybeans
650 $aSoja
700 1 $aHOFFMANN-CAMPO, C. B.
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