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Type: Artigo de periódico
Title: Determination of parabens in sweeteners by capillary electrochromatography
Author: Bottoli, CBG
Gutierrez-Ponce, MDS
Aguiar, VS
de Aquino, WM
Abstract: Parabens, common food preservatives, were analysed by capillary electrochromatography, using a commercial C18 silica (3 mu m, 40 cm x 100 mu m 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.
Subject: Capillary eletrochromatography/quantitative analysis
Sweeteners/quantitative analysis
Country: Brasil
Editor: Univ Sao Paulo, Conjunto Quimicas
Citation: Brazilian Journal Of Pharmaceutical Sciences. Univ Sao Paulo, Conjunto Quimicas, v. 47, n. 4, n. 779, n. 785, 2011.
Rights: aberto
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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