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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
30/03/2022 |
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Data da última atualização: |
30/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CORRÊA, A. C.; CAMPOS, A. de; CLARO, P. I. C.; GUIMARÃES, G. G. F.; MATTOSO, L. H. C.; MARCONCINI, J. M. |
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Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; JOSE MANOEL MARCONCINI, CNPDIA. |
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Título: |
Biodegradability and nutrients release of thermoplastic starch and poly (Epsilon-caprolactone) blends for agricultural uses. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Carbohydrate Polymers, v. 282, 119058, 2022. |
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Páginas: |
1 - 12 |
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ISSN: |
0144-8617 |
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DOI: |
https://doi.org/10.1016/j.carbpol.2021.119058 |
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Idioma: |
Inglês |
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Conteúdo: |
Driven by the environmental stress caused by plastics, the interest on eco-friendly polymers has attracted the attention of researchers and industry. Thermoplastic starch (TPS) and poly (ε-caprolactone) (PCL) blends are good examples of sustainable material, exhibiting synergism between economic viability and properties. However, its biodegradability aligned to nutrients release has been less explored in agricultural applications. Herein, it is proposed the investigation of biodegradability of urea plasticized TPS and PCL blends, compatibilized with PCL grafted with maleic anhydride (PCL-g-MA), aiming fertilizers and sustainable agricultural products. The blends were prepared in a twin-screw extruder using a flat film die. The mechanical, thermal, morphological, and physical properties of TPS-PCL films were characterized, including biodegradation analysis via Bartha respirometer and nitrogen release in the soil. The films presented biodegradability and nitrogen release as a function of TPS content on blends formulation, presenting flexibility and robust mechanical properties. These findings may open a way of multifunctional agricultural products applied as fertilizer materials through economical and sustainable mulching films. |
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Palavras-Chave: |
Biodegradable blends; Nitrogen release; Sustainable films. |
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Categoria do assunto: |
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Marc: |
LEADER 02054naa a2200253 a 4500
001 2141594
005 2022-03-30
008 2022 bl uuuu u00u1 u #d
022 $a0144-8617
024 7 $ahttps://doi.org/10.1016/j.carbpol.2021.119058$2DOI
100 1 $aCORRÊA, A. C.
245 $aBiodegradability and nutrients release of thermoplastic starch and poly (Epsilon-caprolactone) blends for agricultural uses.$h[electronic resource]
260 $c2022
300 $a1 - 12
520 $aDriven by the environmental stress caused by plastics, the interest on eco-friendly polymers has attracted the attention of researchers and industry. Thermoplastic starch (TPS) and poly (ε-caprolactone) (PCL) blends are good examples of sustainable material, exhibiting synergism between economic viability and properties. However, its biodegradability aligned to nutrients release has been less explored in agricultural applications. Herein, it is proposed the investigation of biodegradability of urea plasticized TPS and PCL blends, compatibilized with PCL grafted with maleic anhydride (PCL-g-MA), aiming fertilizers and sustainable agricultural products. The blends were prepared in a twin-screw extruder using a flat film die. The mechanical, thermal, morphological, and physical properties of TPS-PCL films were characterized, including biodegradation analysis via Bartha respirometer and nitrogen release in the soil. The films presented biodegradability and nitrogen release as a function of TPS content on blends formulation, presenting flexibility and robust mechanical properties. These findings may open a way of multifunctional agricultural products applied as fertilizer materials through economical and sustainable mulching films.
653 $aBiodegradable blends
653 $aNitrogen release
653 $aSustainable films
700 1 $aCAMPOS, A. de
700 1 $aCLARO, P. I. C.
700 1 $aGUIMARÃES, G. G. F.
700 1 $aMATTOSO, L. H. C.
700 1 $aMARCONCINI, J. M.
773 $tCarbohydrate Polymers$gv. 282, 119058, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
18/12/2023 |
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Data da última atualização: |
19/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MENESES, J. O.; DIAS, J. A. R.; CUNHA, F. dos S.; SANTOS, H. L. dos; SANTOS, T. B. R.; SANTOS, C. C. M.; NOGUEIRA FILHO, R. M.; PAIXAO, P. E. G.; SOUSA, N. da C.; COUTO, M. V. S. do; ABE, H. A.; SANTOS, F. J. dos; OLIVEIRA, S. P. C. de; MARIA, A. N.; CARDOSO, J. C.; COSTA, L. P. da; FUJIMOTO, R. Y. |
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Afiliação: |
JULIANA OLIVEIRA MENESES, UNIT; JOEL ARTUR RODRIGUES DIAS, UFPA; FERNANDA DOS SANTOS CUNHA, UNIT; HUGO LEANDRO DOS SANTOS, UFS; THAYS BRITO REIS SANTOS, UNIT; CINDY CAROLINE MOURA SANTOS, UNIT; RICARDO MARQUES NOGUEIRA FILHO, UNIT; PETERSON EMMANUEL GUIMARAES PAIXAO, UNIT; NATALINO DA COSTA SOUSA, UFS; MARCIA VALERIA SILVA DO COUTO, UFS; HIGO ANDRADE ABE, UFS; FRANCISCO JOSE DOS SANTOS, CPATC; SILVIA PATRÍCIA CARRASCHI DE OLIVEIRA, UNIARA; ALEXANDRE NIZIO MARIA, CPATC; JULIANA CORDEIRO CARDOSO, UNIT; LUIZ PEREIRA DA COSTA, ICET; RODRIGO YUDI FUJIMOTO, CPATC. |
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Título: |
Prophylactic and therapeutic effects of a nanocomposite (silver nanoparticle plus Terminalia catappa) against Saprolegnia parasitica in tambaqui. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Aquaculture, v. 574, 739695, 2023. |
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ISSN: |
0044-8486 |
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DOI: |
https://doi.org/10.1016/j.aquaculture.2023.739695 |
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Idioma: |
Inglês |
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Conteúdo: |
Infectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clinical signs or mortality. However, the fish group submitted to handling stress presented the highest prevalence and infected areas resulting in 100% mortality. However, the increasing of nanocomposite concentration promoted less oomycete prevalence, pathology intensity, and mortality. The most effective concentration in the prophylactic assay was 0.87 mg L− 1, preventing the infection without blood alterations. Then, the nanocomposite as prophylactic measured at concentration of 0.87 mg L− 1 is the best strategy to prevent S. parasitica infection in fish. MenosInfectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clini... Mostrar Tudo |
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Thesagro: |
Colossoma Macropomum; Doença Animal; Infecção Contagiosa; Peixe; Piscicultura; Profilaxia; Tambaqui; Transmissão de Doença. |
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Thesaurus NAL: |
Colossoma; Fish; Infectious diseases; Saprolegnia parasitica. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159906/1/Prophylactic-and-therapeutic-effects...2023.pdf
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Marc: |
LEADER 03486naa a2200481 a 4500
001 2159906
005 2023-12-19
008 2023 bl uuuu u00u1 u #d
022 $a0044-8486
024 7 $ahttps://doi.org/10.1016/j.aquaculture.2023.739695$2DOI
100 1 $aMENESES, J. O.
245 $aProphylactic and therapeutic effects of a nanocomposite (silver nanoparticle plus Terminalia catappa) against Saprolegnia parasitica in tambaqui.$h[electronic resource]
260 $c2023
520 $aInfectious diseases have been the main limiting factor for international fish farming, especially saprolegniosis, which causes large economic losses. Therefore, this study evaluated the prophylactic and therapeutic effect of a nanocomposite (Silver nanoparticle plus extract of Terminalia catappa) to control Saprolegnia parasitica in tambaqui Colossoma macropomum. Two tests were carried out: 1) a therapeutic assay including long and short-term baths, containing two concentrations of nanocomposite each, on infected tambaqui and 2) a prophylactic assay where the zoospore and nanocomposite (four different concentrations) were added at the same time into water for 72 h. Mortality, prevalence index, hematology, and infected areas with S. parasitica on the fish body were evaluated in both tests. In the therapeutic test, all fish from the control group (without nanocomposite) had increased infected area, as well as lethargy and hemorrhage, resulting in 100% mortality. They also had reduced red blood cells, lymphocytes, neutrophils, monocytes, and thrombocytes. In group exposed to nanocomposite, higher concentrations affected mycelial growth, especially in the highest concentration (4.33 mg L− 1), reducing infected areas on the fish body by 98.70% and achieving 100% survival. The treatment with long-term bath at the lowest concentration (0.54 mg L− 1) had increased values of neutrophils. In the prophylactic test, fish groups without handling stress and the methylene blue had no clinical signs or mortality. However, the fish group submitted to handling stress presented the highest prevalence and infected areas resulting in 100% mortality. However, the increasing of nanocomposite concentration promoted less oomycete prevalence, pathology intensity, and mortality. The most effective concentration in the prophylactic assay was 0.87 mg L− 1, preventing the infection without blood alterations. Then, the nanocomposite as prophylactic measured at concentration of 0.87 mg L− 1 is the best strategy to prevent S. parasitica infection in fish.
650 $aColossoma
650 $aFish
650 $aInfectious diseases
650 $aSaprolegnia parasitica
650 $aColossoma Macropomum
650 $aDoença Animal
650 $aInfecção Contagiosa
650 $aPeixe
650 $aPiscicultura
650 $aProfilaxia
650 $aTambaqui
650 $aTransmissão de Doença
700 1 $aDIAS, J. A. R.
700 1 $aCUNHA, F. dos S.
700 1 $aSANTOS, H. L. dos
700 1 $aSANTOS, T. B. R.
700 1 $aSANTOS, C. C. M.
700 1 $aNOGUEIRA FILHO, R. M.
700 1 $aPAIXAO, P. E. G.
700 1 $aSOUSA, N. da C.
700 1 $aCOUTO, M. V. S. do
700 1 $aABE, H. A.
700 1 $aSANTOS, F. J. dos
700 1 $aOLIVEIRA, S. P. C. de
700 1 $aMARIA, A. N.
700 1 $aCARDOSO, J. C.
700 1 $aCOSTA, L. P. da
700 1 $aFUJIMOTO, R. Y.
773 $tAquaculture$gv. 574, 739695, 2023.
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