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Registros recuperados : 2 | |
1. | | CARDOSO, G. F.; PAIM, N. R.; MARKUS, R. Avaliação de clones de Lotus uliginosus Schkuhr., em Blocos de policruzamento. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 17, n. 4, p. 617-622, abr. 1982. Título em inglês: Evaluation of clones of Lotus uliginosus Schkuhr., in a polycross nursery. Biblioteca(s): Embrapa Unidades Centrais. |
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2. | | CARDOSO, G. F.; FILHO, O. M. de C.; GOMES, H. de S.; REIS FILHO, A.; COSTA, J. A.; MOREIRA, W. M.; BARBOSA, E. L.; LIMA, V. B. Avaliacao de especies forrageiras introduzidas nos municipios de Itapetinga e Nova Canaa- Bahia. In: REUNIAO DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 18., 1981, Goiania. Anais... Goiania: SBZ, 1981. p. 8. Biblioteca(s): Embrapa Semiárido. |
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Registros recuperados : 2 | |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agroenergia. |
Data corrente: |
15/03/2019 |
Data da última atualização: |
18/11/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
COSTA, P. P. K. G.; SALUM, T. F. C.; PACHECO, T. F.; BRAGA, S. C.; ALMEIDA, J. R. M. de; GONCALVES, S. B.; DAMASO, M. C. T.; RODRIGUES, C. M. |
Afiliação: |
PATRICIA PINTO KALIL G COSTA, CNPAE; THAIS FABIANA CHAN SALUM, CNPAE; THALYTA FRAGA PACHECO, CNPAE; Samira C. Braga, UnB; JOAO RICARDO MOREIRA DE ALMEIDA, CNPAE; SILVIA BELEM GONCALVES, CNPAE; MONICA CARAMEZ TRICHES DAMASO, CNPAE; CLENILSON MARTINS RODRIGUES, CNPAE. |
Título: |
Development and validation of HILIC-UHPLC-ELSD methods fordetermination of sugar alcohols stereoisomers and its application forbioconversion processes of crude glycerin. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Journal of Chromatography A, v. 1589, p. 56-64, 2019. |
Idioma: |
Inglês |
Conteúdo: |
The recent increase in the production of crude glycerin through the manufacture of biodiesel has imputeda commercial issue, the excess of this raw material in the market and its constant devaluation, whichresulted in the need for new technologies for its use. Crude glycerin can be used in biotechnologicalprocesses for the production of high value-added compounds. This study presents novel, simple and fastmethods based on ultra-high performance liquid chromatography (UHPLC) using evaporative light scat-tering detection (ELSD) for simultaneous analysis of ten sugar alcohols with a hydrophilic interactionchromatography (HILIC) column. The selected compounds and their possible stereoisomers have majorcommercial importance and they can be obtained by biotechnological routes. Under optimized condi-tions, threitol, erythritol, adonitol, xylitol, arabitol, iditol, sorbitol, mannitol, dulcitol and volemitol canbe analyzed simultaneously within 15.0 min. The use of different column temperatures was a key param-eter to reach the selectivity during the separation of some stereoisomers. Regression equations revealeda good linear relationship (R > 0.995) over the range from 50.0 to 800.0 ng. Limits of detection (LOD) andquantification (LOQ) ranged from 30.0 to 45.0 ng and 50.0?75.0 ng, respectively. The HILIC-UHPLC-ELSDmethods showed good precision with low coefficient of variation (CV%) for the intra- and inter-assaysexperiments (≤ 5.1%) and high repeatability in terms of retention times for each analyte (≤ 0.5%). Theaccuracy was confirmed with an average recovery ranging from 92.3 to 107.3%. The developed methodsemploy an analytical technique more accessible and suitable for routine analyzes and have shown to besuitable for simultaneous analysis of sugar alcohols present in crude bioconverted glycerin samples usingdifferent classes of microorganisms. MenosThe recent increase in the production of crude glycerin through the manufacture of biodiesel has imputeda commercial issue, the excess of this raw material in the market and its constant devaluation, whichresulted in the need for new technologies for its use. Crude glycerin can be used in biotechnologicalprocesses for the production of high value-added compounds. This study presents novel, simple and fastmethods based on ultra-high performance liquid chromatography (UHPLC) using evaporative light scat-tering detection (ELSD) for simultaneous analysis of ten sugar alcohols with a hydrophilic interactionchromatography (HILIC) column. The selected compounds and their possible stereoisomers have majorcommercial importance and they can be obtained by biotechnological routes. Under optimized condi-tions, threitol, erythritol, adonitol, xylitol, arabitol, iditol, sorbitol, mannitol, dulcitol and volemitol canbe analyzed simultaneously within 15.0 min. The use of different column temperatures was a key param-eter to reach the selectivity during the separation of some stereoisomers. Regression equations revealeda good linear relationship (R > 0.995) over the range from 50.0 to 800.0 ng. Limits of detection (LOD) andquantification (LOQ) ranged from 30.0 to 45.0 ng and 50.0?75.0 ng, respectively. The HILIC-UHPLC-ELSDmethods showed good precision with low coefficient of variation (CV%) for the intra- and inter-assaysexperiments (≤ 5.1%) and high repeatability in terms of retention... Mostrar Tudo |
Palavras-Chave: |
Crude glycerin. |
Thesaurus NAL: |
Biotechnology; Sugar alcohols. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02678naa a2200241 a 4500 001 2107126 005 2019-11-18 008 2019 bl uuuu u00u1 u #d 100 1 $aCOSTA, P. P. K. G. 245 $aDevelopment and validation of HILIC-UHPLC-ELSD methods fordetermination of sugar alcohols stereoisomers and its application forbioconversion processes of crude glycerin.$h[electronic resource] 260 $c2019 520 $aThe recent increase in the production of crude glycerin through the manufacture of biodiesel has imputeda commercial issue, the excess of this raw material in the market and its constant devaluation, whichresulted in the need for new technologies for its use. Crude glycerin can be used in biotechnologicalprocesses for the production of high value-added compounds. This study presents novel, simple and fastmethods based on ultra-high performance liquid chromatography (UHPLC) using evaporative light scat-tering detection (ELSD) for simultaneous analysis of ten sugar alcohols with a hydrophilic interactionchromatography (HILIC) column. The selected compounds and their possible stereoisomers have majorcommercial importance and they can be obtained by biotechnological routes. Under optimized condi-tions, threitol, erythritol, adonitol, xylitol, arabitol, iditol, sorbitol, mannitol, dulcitol and volemitol canbe analyzed simultaneously within 15.0 min. The use of different column temperatures was a key param-eter to reach the selectivity during the separation of some stereoisomers. Regression equations revealeda good linear relationship (R > 0.995) over the range from 50.0 to 800.0 ng. Limits of detection (LOD) andquantification (LOQ) ranged from 30.0 to 45.0 ng and 50.0?75.0 ng, respectively. The HILIC-UHPLC-ELSDmethods showed good precision with low coefficient of variation (CV%) for the intra- and inter-assaysexperiments (≤ 5.1%) and high repeatability in terms of retention times for each analyte (≤ 0.5%). Theaccuracy was confirmed with an average recovery ranging from 92.3 to 107.3%. The developed methodsemploy an analytical technique more accessible and suitable for routine analyzes and have shown to besuitable for simultaneous analysis of sugar alcohols present in crude bioconverted glycerin samples usingdifferent classes of microorganisms. 650 $aBiotechnology 650 $aSugar alcohols 653 $aCrude glycerin 700 1 $aSALUM, T. F. C. 700 1 $aPACHECO, T. F. 700 1 $aBRAGA, S. C. 700 1 $aALMEIDA, J. R. M. de 700 1 $aGONCALVES, S. B. 700 1 $aDAMASO, M. C. T. 700 1 $aRODRIGUES, C. M. 773 $tJournal of Chromatography A$gv. 1589, p. 56-64, 2019.
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