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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
08/02/2018 |
Data da última atualização: |
08/02/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, C. P. C. de; ABREU, C. A. de; COSCIONE, A. R.; ANDRADE, C. A. de; TEIXEIRA, L. A. J.; CONSOLINI, F. |
Afiliação: |
CAMILA PRADO CENCIANI DE SOUZA, IAC; CLEIDE APARECIDA DE ABREU, IAC; ALINE RENEE COSCIONE, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA; LUIZ ANTONIO JUNQUEIRA TEIXEIRA, IAC; FLAVIA CONSOLINI, Ministério da Agricultura, Pecuária e Abastecimento. |
Título: |
A statistical review of alternative zinc and copper extraction from mineral fertilizers and industrial by-products. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Journal of AOAC international, v. 101, n. 1, p. 190-195, 2017. |
DOI: |
https://doi.org/10.5740/jaoacint.15-0327 |
Idioma: |
Inglês |
Conteúdo: |
Rapid, accurate, and low-cost alternative analytical methods for micronutrient quantification in fertilizers are fundamental in QC. The purpose of this study was to evaluate whether zinc (Zn) and copper (Cu) content in mineral fertilizers and industrial by-products determined by the alternative methods USEPA 3051a, 10% HCl, and 10% H2SO4 are statistically equivalent to the standard method, consisting of hot-plate digestion using concentrated HCl. The commercially marketed Zn and Cu sources in Brazil consisted of oxides, carbonate, and sulfate fertilizers and by-products consisting of galvanizing ash, galvanizing sludge, brass ash, and brass or scrap slag. The contents of sources ranged from 15 to 82% and 10 to 45%, respectively, for Zn and Cu. The Zn and Cu contents refer to the variation of the elements found in the different sources evaluated with the concentrated HCl method as shown in Table 1. A protocol based on the following criteria was used for the statistical analysis assessment of the methods: F-test modified by Graybill, t-test for the mean error, and linear correlation coefficient analysis. In terms of equivalents, 10% HCl extraction was equivalent to the standard method for Zn, and the results of the USEPA 3051a and 10% HCl methods indicated that these methods were equivalents for Cu. Therefore, these methods can be considered viable alternatives to the standard method of determination for Cu and Zn in mineral fertilizers and industrial by-products in future research for their complete validation. MenosRapid, accurate, and low-cost alternative analytical methods for micronutrient quantification in fertilizers are fundamental in QC. The purpose of this study was to evaluate whether zinc (Zn) and copper (Cu) content in mineral fertilizers and industrial by-products determined by the alternative methods USEPA 3051a, 10% HCl, and 10% H2SO4 are statistically equivalent to the standard method, consisting of hot-plate digestion using concentrated HCl. The commercially marketed Zn and Cu sources in Brazil consisted of oxides, carbonate, and sulfate fertilizers and by-products consisting of galvanizing ash, galvanizing sludge, brass ash, and brass or scrap slag. The contents of sources ranged from 15 to 82% and 10 to 45%, respectively, for Zn and Cu. The Zn and Cu contents refer to the variation of the elements found in the different sources evaluated with the concentrated HCl method as shown in Table 1. A protocol based on the following criteria was used for the statistical analysis assessment of the methods: F-test modified by Graybill, t-test for the mean error, and linear correlation coefficient analysis. In terms of equivalents, 10% HCl extraction was equivalent to the standard method for Zn, and the results of the USEPA 3051a and 10% HCl methods indicated that these methods were equivalents for Cu. Therefore, these methods can be considered viable alternatives to the standard method of determination for Cu and Zn in mineral fertilizers and industrial by-products in future res... Mostrar Tudo |
Palavras-Chave: |
Micronutriente. |
Thesagro: |
Análise quantitativa; Cobre; Fertilizante; Zinco. |
Thesaurus Nal: |
Copper; Fertilizer analysis; Trace element fertilizers; Zinc. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02453naa a2200301 a 4500 001 2087426 005 2018-02-08 008 2017 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.5740/jaoacint.15-0327$2DOI 100 1 $aSOUZA, C. P. C. de 245 $aA statistical review of alternative zinc and copper extraction from mineral fertilizers and industrial by-products.$h[electronic resource] 260 $c2017 520 $aRapid, accurate, and low-cost alternative analytical methods for micronutrient quantification in fertilizers are fundamental in QC. The purpose of this study was to evaluate whether zinc (Zn) and copper (Cu) content in mineral fertilizers and industrial by-products determined by the alternative methods USEPA 3051a, 10% HCl, and 10% H2SO4 are statistically equivalent to the standard method, consisting of hot-plate digestion using concentrated HCl. The commercially marketed Zn and Cu sources in Brazil consisted of oxides, carbonate, and sulfate fertilizers and by-products consisting of galvanizing ash, galvanizing sludge, brass ash, and brass or scrap slag. The contents of sources ranged from 15 to 82% and 10 to 45%, respectively, for Zn and Cu. The Zn and Cu contents refer to the variation of the elements found in the different sources evaluated with the concentrated HCl method as shown in Table 1. A protocol based on the following criteria was used for the statistical analysis assessment of the methods: F-test modified by Graybill, t-test for the mean error, and linear correlation coefficient analysis. In terms of equivalents, 10% HCl extraction was equivalent to the standard method for Zn, and the results of the USEPA 3051a and 10% HCl methods indicated that these methods were equivalents for Cu. Therefore, these methods can be considered viable alternatives to the standard method of determination for Cu and Zn in mineral fertilizers and industrial by-products in future research for their complete validation. 650 $aCopper 650 $aFertilizer analysis 650 $aTrace element fertilizers 650 $aZinc 650 $aAnálise quantitativa 650 $aCobre 650 $aFertilizante 650 $aZinco 653 $aMicronutriente 700 1 $aABREU, C. A. de 700 1 $aCOSCIONE, A. R. 700 1 $aANDRADE, C. A. de 700 1 $aTEIXEIRA, L. A. J. 700 1 $aCONSOLINI, F. 773 $tJournal of AOAC international$gv. 101, n. 1, p. 190-195, 2017.
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Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
Data corrente: |
05/06/2020 |
Data da última atualização: |
15/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
RODRIGUES, S. A. D.; PONTELO, T. P.; KUSSANO, N. R.; KAWAMOTO, T. S.; LEME, L. O.; CAIXETA, F. M. C.; PFEIFER, L. F. M.; FRANCO, M. M.; DODE, M. A. N. |
Afiliação: |
SARAH A. D. RODRIGUES, Universidade de Brasília; THAIS P. PONTELO, Universidade Federal de Lavras; NAYARA R. KUSSANO, Universidade de Brasília; TAYNAN S. KAWAMOTO, Universidade Federal de Uberlândia; LIGIANE O. LEME, Universidade Federal do Espírito Santo; FELIPPE M. C. CAIXETA, Universidade de Brasília; LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO; MAURICIO MACHAIM FRANCO, Cenargen; MARGOT ALVES NUNES DODE, Cenargen. |
Título: |
Effects of Prostaglandins E2 and F2alpha on the in vitro maturation of bovine oocytes. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 72, article 106447, 2020. |
ISSN: |
0739-7240 |
DOI: |
https://doi.org/10.1016/j.domaniend.2020.106447 |
Idioma: |
Inglês |
Conteúdo: |
We aimed to elucidate the effects of PGE2 and PGF2a on the in vitro maturation (IVM) of bovine oocytes. First, cumulus-oocyte complexes were matured in the media supplemented with or without PGE2, PGF2a, or PGE2 plus PGF2a for the final 24, 12, or 6 h of culture. Then, the cumulus-oocyte complexes were matured in the absence or presence of a PG endoperoxide synthase 2 (PTGS2) enzyme inhibitor (NS398) supplemented with PGE2, PGF2a, or PGE2 plus PGF2a. Finally, the expression of genes associated with PGs activity in cumulus cells (PTGS2, PG E-synthase-1 [PTGES1], and aldo-keto reductase 1 [AKR1B1]) or oocytes (receptors for PGE2 [PTGER2] and PGF2a [PTGFR]) of different competencies was quantified. Supplementation of the IVM medium with PGs did not improve in vitro embryo production or embryo quality (P > 0.05). During maturation, the relative abundance of PTGS2 transcripts increased (P < 0.05) only in the less-competent group, whereas those of PTGES1 increased in the less-competent and in the more-competent groups. Conversely, AKR1B1 expression decreased only in the less-competent group (P < 0.05). Receptors for the PGE2 and PGF2a genes were very low or undetectable in oocytes. In conclusion, PGE2 and PGF2a are not recommended for media supplementation during maturation because they have no effect on embryo development. Although genes related to PGs activity are differentially expressed in cumulus cells of cumulus-oocyte complexes of different competence during maturation, the expression of PGE2 and PGF2a receptor genes was either not detectable or was detected at low levels in oocytes. MenosWe aimed to elucidate the effects of PGE2 and PGF2a on the in vitro maturation (IVM) of bovine oocytes. First, cumulus-oocyte complexes were matured in the media supplemented with or without PGE2, PGF2a, or PGE2 plus PGF2a for the final 24, 12, or 6 h of culture. Then, the cumulus-oocyte complexes were matured in the absence or presence of a PG endoperoxide synthase 2 (PTGS2) enzyme inhibitor (NS398) supplemented with PGE2, PGF2a, or PGE2 plus PGF2a. Finally, the expression of genes associated with PGs activity in cumulus cells (PTGS2, PG E-synthase-1 [PTGES1], and aldo-keto reductase 1 [AKR1B1]) or oocytes (receptors for PGE2 [PTGER2] and PGF2a [PTGFR]) of different competencies was quantified. Supplementation of the IVM medium with PGs did not improve in vitro embryo production or embryo quality (P > 0.05). During maturation, the relative abundance of PTGS2 transcripts increased (P < 0.05) only in the less-competent group, whereas those of PTGES1 increased in the less-competent and in the more-competent groups. Conversely, AKR1B1 expression decreased only in the less-competent group (P < 0.05). Receptors for the PGE2 and PGF2a genes were very low or undetectable in oocytes. In conclusion, PGE2 and PGF2a are not recommended for media supplementation during maturation because they have no effect on embryo development. Although genes related to PGs activity are differentially expressed in cumulus cells of cumulus-oocyte complexes of different competence during maturation, the... Mostrar Tudo |
Palavras-Chave: |
E2; Embryonic development; F2a; Maturation; Oócito; Oocyte competence. |
Thesagro: |
Bovinocultura; Cultura In Vitro; Embriogénese; Maturação; Ovulo; Prostaglandina; Reprodução Animal. |
Thesaurus NAL: |
Animal reproduction; Cattle; Embryogenesis; Gene expression; In vitro studies; Oocytes; Prostaglandins. |
Categoria do assunto: |
-- K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219006/1/cpafro-18481.pdf
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Marc: |
LEADER 02942naa a2200481 a 4500 001 2127907 005 2021-09-15 008 2020 bl uuuu u00u1 u #d 022 $a0739-7240 024 7 $ahttps://doi.org/10.1016/j.domaniend.2020.106447$2DOI 100 1 $aRODRIGUES, S. A. D. 245 $aEffects of Prostaglandins E2 and F2alpha on the in vitro maturation of bovine oocytes.$h[electronic resource] 260 $c2020 520 $aWe aimed to elucidate the effects of PGE2 and PGF2a on the in vitro maturation (IVM) of bovine oocytes. First, cumulus-oocyte complexes were matured in the media supplemented with or without PGE2, PGF2a, or PGE2 plus PGF2a for the final 24, 12, or 6 h of culture. Then, the cumulus-oocyte complexes were matured in the absence or presence of a PG endoperoxide synthase 2 (PTGS2) enzyme inhibitor (NS398) supplemented with PGE2, PGF2a, or PGE2 plus PGF2a. Finally, the expression of genes associated with PGs activity in cumulus cells (PTGS2, PG E-synthase-1 [PTGES1], and aldo-keto reductase 1 [AKR1B1]) or oocytes (receptors for PGE2 [PTGER2] and PGF2a [PTGFR]) of different competencies was quantified. Supplementation of the IVM medium with PGs did not improve in vitro embryo production or embryo quality (P > 0.05). During maturation, the relative abundance of PTGS2 transcripts increased (P < 0.05) only in the less-competent group, whereas those of PTGES1 increased in the less-competent and in the more-competent groups. Conversely, AKR1B1 expression decreased only in the less-competent group (P < 0.05). Receptors for the PGE2 and PGF2a genes were very low or undetectable in oocytes. In conclusion, PGE2 and PGF2a are not recommended for media supplementation during maturation because they have no effect on embryo development. Although genes related to PGs activity are differentially expressed in cumulus cells of cumulus-oocyte complexes of different competence during maturation, the expression of PGE2 and PGF2a receptor genes was either not detectable or was detected at low levels in oocytes. 650 $aAnimal reproduction 650 $aCattle 650 $aEmbryogenesis 650 $aGene expression 650 $aIn vitro studies 650 $aOocytes 650 $aProstaglandins 650 $aBovinocultura 650 $aCultura In Vitro 650 $aEmbriogénese 650 $aMaturação 650 $aOvulo 650 $aProstaglandina 650 $aReprodução Animal 653 $aE2 653 $aEmbryonic development 653 $aF2a 653 $aMaturation 653 $aOócito 653 $aOocyte competence 700 1 $aPONTELO, T. P. 700 1 $aKUSSANO, N. R. 700 1 $aKAWAMOTO, T. S. 700 1 $aLEME, L. O. 700 1 $aCAIXETA, F. M. C. 700 1 $aPFEIFER, L. F. M. 700 1 $aFRANCO, M. M. 700 1 $aDODE, M. A. N. 773 $tDomestic Animal Endocrinology$gv. 72, article 106447, 2020.
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