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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: |
26/07/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FACURE, M. H. M.; MERCANTE, L. A.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Polyacrylonitrile/Reduced Graphene Oxide Free-Standing Nanofibrous Membranes for Detecting Endocrine Disruptors. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
ACS Applied Nano Materials, v. 5, 2022. |
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Páginas: |
6376–6384 |
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DOI: |
https://doi.org/10.1021/acsanm.2c00484 |
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Idioma: |
Inglês |
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Conteúdo: |
Endocrine-disrupting chemicals (EDCs) are emerging pollutants whose uncontrolled release in natural aquatic environments can pose risks to human and animal health. In this scenario, the development of simple, low-cost, and sensitive methods to detect trace amounts of EDCs in the environment is highly sought. In this work, a nanofiber-based sensor was fabricated by functionalizing a polyacrylonitrile (PAN) electrospun nanofibrous membrane with reduced graphene oxide (rGO) to be used as a flexible and free-standing electrode to detect EDCs through electrical impedance measurements. The rGO was obtained from graphene oxide using a hydrothermal route, while the PAN/rGO composite membrane was prepared through vacuum filtration. The rGO provided high electrical conductivity to the membrane, which presented a good performance in the detection of endocrine hormones. The electrical resistance variation enabled the detection of 17αethinylestradiol (EE2) in a linear range between 10−5 and 10−11 mol L−1 . Moreover, by using the principal component analysis (PCA) for data treatment, the sensor was able to discriminate EE2, estrone, estradiol, and progesterone at 100 pmol L−1 in real river water samples. These results open up the possibility to fabricate in a simple way functionalized nanofibrous membranes to be used as sensing material for the detection of varied analytes with high sensitivity and low cost. |
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Palavras-Chave: |
Electrical impedance spectroscopy; Electrospinning; Electrospun nanofibers; Impedimetric sensor. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02154naa a2200217 a 4500
001 2155314
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/acsanm.2c00484$2DOI
100 1 $aFACURE, M. H. M.
245 $aPolyacrylonitrile/Reduced Graphene Oxide Free-Standing Nanofibrous Membranes for Detecting Endocrine Disruptors.$h[electronic resource]
260 $c2023
300 $a6376–6384
520 $aEndocrine-disrupting chemicals (EDCs) are emerging pollutants whose uncontrolled release in natural aquatic environments can pose risks to human and animal health. In this scenario, the development of simple, low-cost, and sensitive methods to detect trace amounts of EDCs in the environment is highly sought. In this work, a nanofiber-based sensor was fabricated by functionalizing a polyacrylonitrile (PAN) electrospun nanofibrous membrane with reduced graphene oxide (rGO) to be used as a flexible and free-standing electrode to detect EDCs through electrical impedance measurements. The rGO was obtained from graphene oxide using a hydrothermal route, while the PAN/rGO composite membrane was prepared through vacuum filtration. The rGO provided high electrical conductivity to the membrane, which presented a good performance in the detection of endocrine hormones. The electrical resistance variation enabled the detection of 17αethinylestradiol (EE2) in a linear range between 10−5 and 10−11 mol L−1 . Moreover, by using the principal component analysis (PCA) for data treatment, the sensor was able to discriminate EE2, estrone, estradiol, and progesterone at 100 pmol L−1 in real river water samples. These results open up the possibility to fabricate in a simple way functionalized nanofibrous membranes to be used as sensing material for the detection of varied analytes with high sensitivity and low cost.
653 $aElectrical impedance spectroscopy
653 $aElectrospinning
653 $aElectrospun nanofibers
653 $aImpedimetric sensor
700 1 $aMERCANTE, L. A.
700 1 $aCORREA, D. S.
773 $tACS Applied Nano Materials$gv. 5, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
12/01/2021 |
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Data da última atualização: |
11/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
RODRIGUES, A. P. O.; BICUDO, A. J. A.; MORO, G. V.; GOMINHO-ROSA, M. do C.; GUBIANI, E. A. |
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Afiliação: |
ANA PAULA OEDA RODRIGUES, CNPASA; ALVARO JOSE ALMEIDA BICUDO, UNIVERSIDADE FEDERAL DO PARANÁ; GIOVANNI VITTI MORO, CNPASA; MARIA DO CARMO GOMINHO-ROSA, UNIVERSIDADE ESTADUAL OESTE DO PARANÁ, Toledo-PR; EDER ANDRE GUBIANI, UNIVERSIDADE FEDERAL DO PARANÁ. |
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Título: |
Muscle amino acid profile of wild and farmed pirarucu (Arapaima gigas) in two size classes and an estimation of their dietary essential amino acid requirements. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Applied Aquaculture, v. 34, n. 2, p. 441-455, 2022. |
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ISSN: |
1545-0805 |
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DOI: |
https://doi.org/10.1080/10454438.2020.1866141 |
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Idioma: |
Inglês |
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Conteúdo: |
Pirarucu is a carnivorous fish species from the Amazon river basin. There is growing interest in pirarucu farming, but scarce information for specific diets is a limitation. We analyzed the muscle tissue amino acid profile of pirarucu in order to estimate its amino acid requirements by using a diverse sample pool. Wild pirarucu was captured in the Araguaia and Caiapós river basins (Tocantins, Brazil). Farmed pirarucu was purchased from fish farms in the states of Maranhão and Tocantins (Brazil). Fish were sampled in two size classes: 1.66 ± 0.22 and 10.49 ± 1.07 kg body weight. Multivariate statistical analyses were applied to amino acid profiles among the groups, using R software with Vegan package. Muscle amino acid profiles varied according to pirarucu origin and size class. Estimated values can be adopted to formulate diets for pirarucu. Pirarucu fillet is a good source of essential amino acids for human consumption. |
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Palavras-Chave: |
EAA; Fillet protein quality; NEAA; Protein utilization. |
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Thesagro: |
Alimentação; Aminoácido; Dieta; Peixe; Pirarucu. |
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Thesaurus NAL: |
Amino acid composition; Arapaima gigas; Feed formulation; Proteins. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02008naa a2200349 a 4500
001 2129223
005 2022-05-11
008 2022 bl uuuu u00u1 u #d
022 $a1545-0805
024 7 $ahttps://doi.org/10.1080/10454438.2020.1866141$2DOI
100 1 $aRODRIGUES, A. P. O.
245 $aMuscle amino acid profile of wild and farmed pirarucu (Arapaima gigas) in two size classes and an estimation of their dietary essential amino acid requirements.$h[electronic resource]
260 $c2022
520 $aPirarucu is a carnivorous fish species from the Amazon river basin. There is growing interest in pirarucu farming, but scarce information for specific diets is a limitation. We analyzed the muscle tissue amino acid profile of pirarucu in order to estimate its amino acid requirements by using a diverse sample pool. Wild pirarucu was captured in the Araguaia and Caiapós river basins (Tocantins, Brazil). Farmed pirarucu was purchased from fish farms in the states of Maranhão and Tocantins (Brazil). Fish were sampled in two size classes: 1.66 ± 0.22 and 10.49 ± 1.07 kg body weight. Multivariate statistical analyses were applied to amino acid profiles among the groups, using R software with Vegan package. Muscle amino acid profiles varied according to pirarucu origin and size class. Estimated values can be adopted to formulate diets for pirarucu. Pirarucu fillet is a good source of essential amino acids for human consumption.
650 $aAmino acid composition
650 $aArapaima gigas
650 $aFeed formulation
650 $aProteins
650 $aAlimentação
650 $aAminoácido
650 $aDieta
650 $aPeixe
650 $aPirarucu
653 $aEAA
653 $aFillet protein quality
653 $aNEAA
653 $aProtein utilization
700 1 $aBICUDO, A. J. A.
700 1 $aMORO, G. V.
700 1 $aGOMINHO-ROSA, M. do C.
700 1 $aGUBIANI, E. A.
773 $tJournal of Applied Aquaculture$gv. 34, n. 2, p. 441-455, 2022.
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Embrapa Pesca e Aquicultura (CNPASA) |
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