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Provedor de dados:  BJPS
País:  Brazil
Título:  Determination of parabens in sweeteners by capillary electrochromatography
Autores:  Bottoli,Carla Beatriz Grespan
Gutiérrez-Ponce,María de Jesús Santa
Aguiar,Valeska Soares
Aquino,Walkyria Moraes de
Data:  2011-12-01
Ano:  2011
Palavras-chave:  Capillary eletrochromatography/quantitative analysis
Parabenos/determination
Sweeteners/quantitative analysis
Resumo:  Parabens, common food preservatives, were analysed by capillary electrochromatography, using a commercial C18 silica (3 µm, 40 cm × 100 µm i. d.) capillary column as separation phase. In order to optimise the separation of these preservatives, the effects of mobile phase composition on the separation were evaluated, as well as the applied voltage and injection conditions. The retention behavior of these analytes was strongly influenced by the level of acetonitrile in the mobile phase. An optimal separation of the parabens was obtained within 18.5 minutes with a pH 8.0 mobile phase composed of 50:50 v/v tris(hydroxymethyl)aminomethane buffer and acetonitrile. The method was successfully applied to the quantitative analysis of paraben preservatives in sweetener samples with direct injection.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000400015
Editor:  Universidade de São Paulo, Faculdade de Ciências Farmacêuticas
Relação:  10.1590/S1984-82502011000400015
Formato:  text/html
Fonte:  Brazilian Journal of Pharmaceutical Sciences v.47 n.4 2011
Direitos:  info:eu-repo/semantics/openAccess
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