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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
10/01/2007 |
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Data da última atualização: |
20/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PRESTES, R. A.; COLNAGO, L. A.; FORATO, L. A.; VIZZOTTO, L.; NOVOTNY, E. H.; CARRILHO, E. |
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Afiliação: |
ROSILENE APARECIDA PRESTES, USP; LUIZ ALBERTO COLNAGO, CNPDIA; LUCIMARA APARECIDA FORATO, CNPDIA; LUCINÉIA VIZZOTTO, CNPDIA; ETELVINO HENRIQUE NOVOTNY, CNPS; EMANUEL CARRILHO, USP. |
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Título: |
A rapid and automated low resolution NMR method to analyze oil quality in intact oilseeds. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Analytica Chimica Acta, Amsterdam, v. 596, n. 2, p. 325-329, July 2007. |
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DOI: |
https://doi.org/10.1016/j.aca.2007.06.022 |
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Idioma: |
Inglês |
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Conteúdo: |
Oilseeds with modified fatty acid profiles have been the genetic alternative for high quality vegetable oil for food and biodiesel applications. They can provide stable, functional oils for the food industry, without the hydrogenation process that produces trans-fatty acid, which has been linked to cardiovascular disease. High yield and high quality oilseeds are also necessary for the success of biodiesel programs, as polyunsatured or saturated fatty acid oil produces biofuel with undesirable properties. In this paper, a rapid and automated low resolution NMR method to select intact oilseeds with a modified fatty acid profile is introduced, based on 1H transverse relaxation time (T2). The T2 weighted NMR signal, obtained by a CPMG pulse sequence and processed by chemometric methods was able to determine the oil quality in intact seeds by its fatty composition, cetane number, iodine value and kinematic viscosity with a correlation coefficient r > 0.9. The automated system has the potential to analyze more than 1000 samples per hour and is a powerful tool to speed up the selection of high quality oilseeds for food and biodiesel applications. |
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Palavras-Chave: |
Ácidos graxos trans; Oleaginosas; Ressonância magnética nuclear. |
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Thesaurus Nal: |
biodiesel. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01920naa a2200241 a 4500
001 1339182
005 2021-10-20
008 2007 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.aca.2007.06.022$2DOI
100 1 $aPRESTES, R. A.
245 $aA rapid and automated low resolution NMR method to analyze oil quality in intact oilseeds.$h[electronic resource]
260 $c2007
520 $aOilseeds with modified fatty acid profiles have been the genetic alternative for high quality vegetable oil for food and biodiesel applications. They can provide stable, functional oils for the food industry, without the hydrogenation process that produces trans-fatty acid, which has been linked to cardiovascular disease. High yield and high quality oilseeds are also necessary for the success of biodiesel programs, as polyunsatured or saturated fatty acid oil produces biofuel with undesirable properties. In this paper, a rapid and automated low resolution NMR method to select intact oilseeds with a modified fatty acid profile is introduced, based on 1H transverse relaxation time (T2). The T2 weighted NMR signal, obtained by a CPMG pulse sequence and processed by chemometric methods was able to determine the oil quality in intact seeds by its fatty composition, cetane number, iodine value and kinematic viscosity with a correlation coefficient r > 0.9. The automated system has the potential to analyze more than 1000 samples per hour and is a powerful tool to speed up the selection of high quality oilseeds for food and biodiesel applications.
650 $abiodiesel
653 $aÁcidos graxos trans
653 $aOleaginosas
653 $aRessonância magnética nuclear
700 1 $aCOLNAGO, L. A.
700 1 $aFORATO, L. A.
700 1 $aVIZZOTTO, L.
700 1 $aNOVOTNY, E. H.
700 1 $aCARRILHO, E.
773 $tAnalytica Chimica Acta, Amsterdam$gv. 596, n. 2, p. 325-329, July 2007.
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Registro original: |
Embrapa Solos (CNPS) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Status |
URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
20/01/2012 |
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Data da última atualização: |
11/11/2022 |
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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: |
FERREIRA, A.; PAULA, F. R. de; FERRAZ, S. F. de B.; GERHARD, P.; KASHIWAQUI, E. A. L.; CYRINO, J. E. P.; MARTINELLI, L. A. |
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Afiliação: |
ANDERSON FERREIRA, CENA; FELIPE R. DE PAULA, USP/ESALQ; SILVIO F. DE BARROZ FERRAZ, USP/ESALQ; PEDRO GERHARD, CPATU; ELAINE A. L. KASHIWAQUI, UNIOESTE; JOSÉ E. P. CYRINO, USP/ESALQ; LUIZ A. MARTINELLI, CENA. |
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Título: |
Riparian coverage affects diets of characids in neotropical streams. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Ecology of Freshwater Fish, v. 21, n. 1, p. 12-22, Jan. 2012. |
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DOI: |
10.1111/j.1600-0633.2011.00518.x |
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Idioma: |
Inglês |
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Conteúdo: |
Aquatic ecosystems are influenced by the surrounding terrestrial environment. This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30?60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin. |
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Palavras-Chave: |
Agroecossistema. |
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Thesagro: |
Peixe; Uso da Terra. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01898naa a2200241 a 4500
001 1913125
005 2022-11-11
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1600-0633.2011.00518.x$2DOI
100 1 $aFERREIRA, A.
245 $aRiparian coverage affects diets of characids in neotropical streams.$h[electronic resource]
260 $c2012
520 $aAquatic ecosystems are influenced by the surrounding terrestrial environment. This work studied the influence of vegetation of riparian zones on the feeding patterns of two nektonic characids, Astyanax paranae and Bryconamericus iheringii, in a basin surrounded by an agricultural area. Nine streams within the Corumbataí River basin (São Paulo State, Brazil) with varying proportions of adjacent riparian forest (RF) and pastures were set apart in three arbitrary categories: Riparian Forest (>90% RF), Mixed Coverage (banks covered by 30?60% RF; MC) and Pasture (<29% RF, PA); resident characids were sampled in the dry and rainy seasons and evaluated in regard to composition of diets. Astyanax paranae fed on allochthonous food sources in RF and MC, and on autochthonous food sources on PA streams; B. iheringii fed on autochthonous food sources in RF streams and in mixed resources (detritus and sediment) in PA streams. Selection of food source was related to, and altered by, stream channel structure and composition of substratum. Preservation and restoration of native riparian vegetation is key to preservation of resident characids in small streams of this river basin.
650 $aPeixe
650 $aUso da Terra
653 $aAgroecossistema
700 1 $aPAULA, F. R. de
700 1 $aFERRAZ, S. F. de B.
700 1 $aGERHARD, P.
700 1 $aKASHIWAQUI, E. A. L.
700 1 $aCYRINO, J. E. P.
700 1 $aMARTINELLI, L. A.
773 $tEcology of Freshwater Fish$gv. 21, n. 1, p. 12-22, Jan. 2012.
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