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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
25/10/2017 |
Data da última atualização: |
25/10/2017 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SILVA, G. H. da; CLEMENTE, Z.; COA, F.; RODRIGUES NETO, L. L.; KHAN, L. U.; CARVALHO, H. W. P.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. |
Afiliação: |
G. H. da SILVA; Z. CLEMENTE; F. COA; L. L. RODRIGUES NETO; L. U. KHAN; H. W. P. CARVALHO; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; D. S. T. MARTINEZ; R. T. R. MONTEIRO. |
Título: |
Nanoecotoxicity and uptake of TiO2@MWCNT hybrid material on Danio rerio embryos. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.11. p. 384. |
Idioma: |
Inglês |
Conteúdo: |
A process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the preparation method was efficient to loaded the TiO2 on the surface of MWCNT, and the composite was more photocatalytic than TiO2. Besides, no acute toxicity, nor sublethal effects in Danio rerio embryos was observed until 100 mg L-1. Nevertheless, µ-XRF showed that the larvae were ingesting the nanoparticle. In conclusion, TiO2@MWCNT is a promising material for environmental remediation, presenting high efficiency and low toxicity. MenosA process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the prepa... Mostrar Tudo |
Palavras-Chave: |
Nanoecotoxicologia. |
Thesaurus Nal: |
Danio rerio. |
Categoria do assunto: |
W Química e Física |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165540/1/RA-CastroVLSS-16BrazilMRSMeeting-2017-p384.pdf
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Marc: |
LEADER 02716nam a2200229 a 4500 001 2078103 005 2017-10-25 008 2017 bl uuuu u00u1 u #d 100 1 $aSILVA, G. H. da 245 $aNanoecotoxicity and uptake of TiO2@MWCNT hybrid material on Danio rerio embryos.$h[electronic resource] 260 $aIn: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.11. p. 384.$c2017 520 $aA process that is being widely used for environmental remediation is photocatalysis. The use of nanotechnology can highly improve this field, and there is already a wide range of nanomaterials employed in photocatalytic research and applications. A material that has been highlighted in this field is the TiO2@MWCNT, this combination increase the photocatalytic efficiency, and therefore being an extremely effective method for remediation of contaminants. Due to the importance of these hybrid materials, the production of such particles has been encouraged. However, concerns about their toxicity and safety when released into the environment should be considered. Therefore, to understand the role of TiO2@MWCNT in the environment, our main objective was to study the photocatalytic activity and toxicity of TiO2@MWCNT composite on Danio rerio embryos (zebrafish). For this purpose, TiO2@MWCNT nanomaterial was synthetized, by mechanical mixing method, and an early life stage assay was performed with zebrafish embryos. The parameters assessed were acute toxicity, hatching rate, growth, yolk sac size, and the sarcomere length. In addition, we employed ?-probe X-ray fluorescence spectroscopy to observe if nanoparticles were being uptake by zebrafish larvae. Also, the photocatalytic efficiency of the TiO2@MWCNT was assessed through indigo blue dye degradation using UV-Vis spectroscopy. TiO2@MWCNT characterization was performed by SEM, TEM and TGA analysis. Our results shown that the preparation method was efficient to loaded the TiO2 on the surface of MWCNT, and the composite was more photocatalytic than TiO2. Besides, no acute toxicity, nor sublethal effects in Danio rerio embryos was observed until 100 mg L-1. Nevertheless, µ-XRF showed that the larvae were ingesting the nanoparticle. In conclusion, TiO2@MWCNT is a promising material for environmental remediation, presenting high efficiency and low toxicity. 650 $aDanio rerio 653 $aNanoecotoxicologia 700 1 $aCLEMENTE, Z. 700 1 $aCOA, F. 700 1 $aRODRIGUES NETO, L. L. 700 1 $aKHAN, L. U. 700 1 $aCARVALHO, H. W. P. 700 1 $aCASTRO, V. L. S. S. de 700 1 $aMARTINEZ, D. S. T. 700 1 $aMONTEIRO, R. T. R.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
19/09/2023 |
Data da última atualização: |
19/09/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 2 |
Autoria: |
LEITE, E. W. S.; GARRIDO, M. da S.; SIMOES, W. L.; SALVIANO, A. M.; MESQUITA, A. C. |
Afiliação: |
EMERSON WILBERTO SILVA LEITE, UNIVASF; MARLON DA SILVA GARRIDO, UNIVASF; WELSON LIMA SIMOES, CPATSA; ALESSANDRA MONTEIRO SALVIANO, CPATSA; ALESSANDRO CARLOS MESQUITA, Universidade do Estado da Bahia, Juazeiro, BA. |
Título: |
Yield, physiology and quality of yellow melon grown with biofertilizer. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Pesquisa Agropecuária Tropical, v. 53, e75846, 2023. |
ISSN: |
1983-4063 |
DOI: |
10.1590/1983-40632023v5375846 |
Idioma: |
Inglês |
Conteúdo: |
An efficient organic cultivation can be a viable strategy to enhance the sustainability of the melon production chain. This study aimed to assess the physiological and productive responses, as well as the post-harvest quality, of melon fruits, as a function of biofertilizer doses. The experiment followed a randomized blocks design, in a split-plot arrangement, with four replications. The treatments included six biofertilizer doses (0, 1, 2, 3, 4 and 5 L plant-1) as subplots and two melon hybrids (AC 154 and Royal Amália) as plots. The use of 3 L plant-1 cycle-1 of the biofertilizer increased the sugar content in the leaf tissue, improved the photosynthetic efficiency, enhanced the biochemical variables and provided higher yields, in addition to improving the fruit post-harvest quality of the tested hybrids. |
Palavras-Chave: |
Cultivo orgânico; Melão amarelo; Qualidade pós-colheita de frutos. |
Thesagro: |
Adubação; Adubo Orgânico; Biofertilizante; Cucumis Melo; Fisiologia; Melão; Pós-Colheita. |
Thesaurus NAL: |
Melons; Postharvest physiology; Postharvest technology; Postharvest treatment. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1156762/1/Melao-amerelo-Yield-physiology-and-quality-of-yellow-melon-grown-with-biofertilizer.pdf
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Marc: |
LEADER 01851naa a2200361 a 4500 001 2156762 005 2023-09-19 008 2023 bl uuuu u00u1 u #d 022 $a1983-4063 024 7 $a10.1590/1983-40632023v5375846$2DOI 100 1 $aLEITE, E. W. S. 245 $aYield, physiology and quality of yellow melon grown with biofertilizer.$h[electronic resource] 260 $c2023 520 $aAn efficient organic cultivation can be a viable strategy to enhance the sustainability of the melon production chain. This study aimed to assess the physiological and productive responses, as well as the post-harvest quality, of melon fruits, as a function of biofertilizer doses. The experiment followed a randomized blocks design, in a split-plot arrangement, with four replications. The treatments included six biofertilizer doses (0, 1, 2, 3, 4 and 5 L plant-1) as subplots and two melon hybrids (AC 154 and Royal Amália) as plots. The use of 3 L plant-1 cycle-1 of the biofertilizer increased the sugar content in the leaf tissue, improved the photosynthetic efficiency, enhanced the biochemical variables and provided higher yields, in addition to improving the fruit post-harvest quality of the tested hybrids. 650 $aMelons 650 $aPostharvest physiology 650 $aPostharvest technology 650 $aPostharvest treatment 650 $aAdubação 650 $aAdubo Orgânico 650 $aBiofertilizante 650 $aCucumis Melo 650 $aFisiologia 650 $aMelão 650 $aPós-Colheita 653 $aCultivo orgânico 653 $aMelão amarelo 653 $aQualidade pós-colheita de frutos 700 1 $aGARRIDO, M. da S. 700 1 $aSIMOES, W. L. 700 1 $aSALVIANO, A. M. 700 1 $aMESQUITA, A. C. 773 $tPesquisa Agropecuária Tropical$gv. 53, e75846, 2023.
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