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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
03/08/2017 |
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Data da última atualização: |
23/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CLEMENTE, Z.; CASTRO, V. L. S. S. de; FRANQUI, L.; SILVA, C. A.; MARTINEZ, D. S. T. |
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Afiliação: |
ZAIRA CLEMENTE, CNPEM; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; LIDIANE FRANQUI, CNPEM; CRISTIANE A SILVA, CNPEM; DIEGO STEFANI TEODORO MARTINEZ, CNPEM. |
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Título: |
Nanotoxicity of graphene oxide: assessing the influence of oxidation debris in the presence of humic acid. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Environmental Pollution, v. 225, p. 118-128, 2017. |
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DOI: |
http://dx.doi.org/10.1016/j.envpol.2017.03.033 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: This study sought to evaluate the toxicological effects of graphene oxide (GO) through tests with Danio rerio (zebrafish) embryos, considering the influence of the base washing treatment and the interaction with natural organic matter (i.e., humic acid, HA). A commercial sample of GO was refluxed with NaOH to remove oxidation debris (OD) byproducts, which resulted in a base washed GO sample (bw-GO). This process decreased the total oxygenated groups in bw-GO and its stability in water compared to GO. When tested in the presence of HA, both GO and bw-GO stabilities were enhanced in water. Although the embryo exposure showed no acute toxicity or malformation, the larvae exposed to GO showed a reduction in their overall length and acetylcholinesterase activity. In the presence of HA, GO also inhibited acid phosphatase activity. Our findings indicate a mitigation of material toxicity after OD removal. The difference in the biological effects may be related to the materials? bioavailability and biophysicochemical interactions. This study reports for the first time the critical influence of OD on the GO material biological reactivity and HA interaction, providing new data for nanomaterial environmental risk assessment and sustainable nanotechnology. |
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Palavras-Chave: |
Biomarker; Nanoecotoxicology; Zebrafish. |
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Thesagro: |
Composto químico; Matéria orgânica; Peixe de água doce; Toxidez. |
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Thesaurus Nal: |
embryotoxicity; nanotechnology. |
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Categoria do assunto: |
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Marc: |
LEADER 02151naa a2200289 a 4500
001 2073578
005 2017-10-23
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.envpol.2017.03.033$2DOI
100 1 $aCLEMENTE, Z.
245 $aNanotoxicity of graphene oxide$bassessing the influence of oxidation debris in the presence of humic acid.$h[electronic resource]
260 $c2017
520 $aAbstract: This study sought to evaluate the toxicological effects of graphene oxide (GO) through tests with Danio rerio (zebrafish) embryos, considering the influence of the base washing treatment and the interaction with natural organic matter (i.e., humic acid, HA). A commercial sample of GO was refluxed with NaOH to remove oxidation debris (OD) byproducts, which resulted in a base washed GO sample (bw-GO). This process decreased the total oxygenated groups in bw-GO and its stability in water compared to GO. When tested in the presence of HA, both GO and bw-GO stabilities were enhanced in water. Although the embryo exposure showed no acute toxicity or malformation, the larvae exposed to GO showed a reduction in their overall length and acetylcholinesterase activity. In the presence of HA, GO also inhibited acid phosphatase activity. Our findings indicate a mitigation of material toxicity after OD removal. The difference in the biological effects may be related to the materials? bioavailability and biophysicochemical interactions. This study reports for the first time the critical influence of OD on the GO material biological reactivity and HA interaction, providing new data for nanomaterial environmental risk assessment and sustainable nanotechnology.
650 $aembryotoxicity
650 $ananotechnology
650 $aComposto químico
650 $aMatéria orgânica
650 $aPeixe de água doce
650 $aToxidez
653 $aBiomarker
653 $aNanoecotoxicology
653 $aZebrafish
700 1 $aCASTRO, V. L. S. S. de
700 1 $aFRANQUI, L.
700 1 $aSILVA, C. A.
700 1 $aMARTINEZ, D. S. T.
773 $tEnvironmental Pollution$gv. 225, p. 118-128, 2017.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
06/08/2020 |
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Data da última atualização: |
01/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ARAÚJO, R. A. de; POMPEU, R. C. F. F.; CÂNDIDO, M. J. D.; ROGERIO, M. C. P.; LUCAS, R. C.; MARANHÃO, S. R.; SANTOS NETO, C. F. dos; NEIVA, J. N. M. |
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Afiliação: |
RICARDO ALVES DE ARAÚJO, Universidade Estadual do Maranhão (UEMA) - Itapecuru-Mirim, MA, Brasil / Orcid: http://orcid.org/0000-0001-9696-5680; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC - Orcid: http://orcid.org/0000-0002-4099-3575; MAGNO JOSÉ DUARTE CÂNDIDO, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brasil / Orcid: http://orcid.org/0000-0003-3573-6053; MARCOS CLAUDIO PINHEIRO ROGERIO, CNPC; RONALDO CARLOS LUCAS, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brasil / Orcid: http://orcid.org/0000-0003-3418-0874; SAMUEL ROCHA MARANHÃO, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brasil / Orcid: http://orcid.org/0000-0002-9945-9529; CLEMENTE FERNANDES DOS SANTOS NETO, Universidade Federal do Ceará (UFC) - Fortaleza, CE, Brasil / Orcid: http://orcid.org/0000-0001-6655-3239; JOSÉ NEUMAN MIRANDA NEIVA, Universidade Federal do Tocantins (UFT) - Araguaína, TO, Brasil / Orcid: http://orcid.org/0000-0001-7817-8210. |
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Título: |
Detoxified castor in the diets of dairy goats: I. Effects on intake, digestibility, and renal and hepatic parameters. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 49, e20190141, Aug. 2020. |
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DOI: |
https://doi.org/10.37496/rbz4920190141 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective was to evaluate the intake, digestibility, nitrogen balance, and metabolic profile of lactating goats fed diets containing detoxified castor cake (DCC) by alkaline solutions during 150 days of lactation. Twenty-four Saanen and Anglo Nubian goats, approximately 17 months old (first lactation) and body weights of 43±2.97 kg, were distributed in a completely randomized block design with eight replicates. Treatments consisted of three diets, one containing soybean meal (SM) and two others containing DCC, with calcium hydroxide [Ca(OH)2] and sodium hydroxide (NaOH). The diets significantly influenced the intake of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), and total digestible nutrients (TDN). We observed a higher dry matter intake (DMI) in goats fed SM, similar to that of goats fed Ca(OH)2 DCC. Intake of nutrients followed the same trend as DMI. There was no significant effect of diets on digestibility of DM, CP, EE, and NDF; however, we observed a significant effect of diets on the levels of nitrogen intake (NI) and urinary nitrogen (UN). The goats fed SM consumed a larger quantity of nitrogen, but all had the same nitrogen balance, indicating that goats fed DCC were more efficient. The diets did not influence renal and hepatic parameters. Inclusion of castor cake in the diet of goats in confinement is an attractive option, considering that goats fed DCC present lower feed conversion, and its use does not cause hepatic and renal alterations, suggesting that SM can be completely replaced. MenosThe objective was to evaluate the intake, digestibility, nitrogen balance, and metabolic profile of lactating goats fed diets containing detoxified castor cake (DCC) by alkaline solutions during 150 days of lactation. Twenty-four Saanen and Anglo Nubian goats, approximately 17 months old (first lactation) and body weights of 43±2.97 kg, were distributed in a completely randomized block design with eight replicates. Treatments consisted of three diets, one containing soybean meal (SM) and two others containing DCC, with calcium hydroxide [Ca(OH)2] and sodium hydroxide (NaOH). The diets significantly influenced the intake of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), and total digestible nutrients (TDN). We observed a higher dry matter intake (DMI) in goats fed SM, similar to that of goats fed Ca(OH)2 DCC. Intake of nutrients followed the same trend as DMI. There was no significant effect of diets on digestibility of DM, CP, EE, and NDF; however, we observed a significant effect of diets on the levels of nitrogen intake (NI) and urinary nitrogen (UN). The goats fed SM consumed a larger quantity of nitrogen, but all had the same nitrogen balance, indicating that goats fed DCC were more efficient. The diets did not influence renal and hepatic parameters. Inclusion of castor cake in the diet of goats in confinement is an attractive option, considering that goats fed DCC present lower feed conversion, and its use does not cause hepatic ... Mostrar Tudo |
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Palavras-Chave: |
Anglo Nubian; Destoxificação; Farelo de soja; Persistence; Torta de mamona. |
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Thesagro: |
Alimento Para Animal; Cabra Leiteira; Caprino; Desintoxicação; Dieta; Nutrição Animal; Ricina; Ricinus Communis. |
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Thesaurus NAL: |
Animal feeding; Animal nutrition; Dairy goats; Diet; Ricin; Ruminant nutrition; Saanen; Soybean meal; Toxicity. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215125/1/CNPC-2020-Detoxified.pdf
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Marc: |
LEADER 02933naa a2200481 a 4500
001 2124201
005 2020-12-01
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.37496/rbz4920190141$2DOI
100 1 $aARAÚJO, R. A. de
245 $aDetoxified castor in the diets of dairy goats$bI. Effects on intake, digestibility, and renal and hepatic parameters.$h[electronic resource]
260 $c2020
520 $aThe objective was to evaluate the intake, digestibility, nitrogen balance, and metabolic profile of lactating goats fed diets containing detoxified castor cake (DCC) by alkaline solutions during 150 days of lactation. Twenty-four Saanen and Anglo Nubian goats, approximately 17 months old (first lactation) and body weights of 43±2.97 kg, were distributed in a completely randomized block design with eight replicates. Treatments consisted of three diets, one containing soybean meal (SM) and two others containing DCC, with calcium hydroxide [Ca(OH)2] and sodium hydroxide (NaOH). The diets significantly influenced the intake of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), and total digestible nutrients (TDN). We observed a higher dry matter intake (DMI) in goats fed SM, similar to that of goats fed Ca(OH)2 DCC. Intake of nutrients followed the same trend as DMI. There was no significant effect of diets on digestibility of DM, CP, EE, and NDF; however, we observed a significant effect of diets on the levels of nitrogen intake (NI) and urinary nitrogen (UN). The goats fed SM consumed a larger quantity of nitrogen, but all had the same nitrogen balance, indicating that goats fed DCC were more efficient. The diets did not influence renal and hepatic parameters. Inclusion of castor cake in the diet of goats in confinement is an attractive option, considering that goats fed DCC present lower feed conversion, and its use does not cause hepatic and renal alterations, suggesting that SM can be completely replaced.
650 $aAnimal feeding
650 $aAnimal nutrition
650 $aDairy goats
650 $aDiet
650 $aRicin
650 $aRuminant nutrition
650 $aSaanen
650 $aSoybean meal
650 $aToxicity
650 $aAlimento Para Animal
650 $aCabra Leiteira
650 $aCaprino
650 $aDesintoxicação
650 $aDieta
650 $aNutrição Animal
650 $aRicina
650 $aRicinus Communis
653 $aAnglo Nubian
653 $aDestoxificação
653 $aFarelo de soja
653 $aPersistence
653 $aTorta de mamona
700 1 $aPOMPEU, R. C. F. F.
700 1 $aCÂNDIDO, M. J. D.
700 1 $aROGERIO, M. C. P.
700 1 $aLUCAS, R. C.
700 1 $aMARANHÃO, S. R.
700 1 $aSANTOS NETO, C. F. dos
700 1 $aNEIVA, J. N. M.
773 $tRevista Brasileira de Zootecnia$gv. 49, e20190141, Aug. 2020.
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Embrapa Caprinos e Ovinos (CNPC) |
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