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	Provedor de dados Ciênc. Tecnol. Aliment. (2) Autor Ballus,Cristiano Augusto (2) Bizzotto,Carolina Schaper (2) Godoy,Helena Teixeira (2) Meinhart,Adriana Dillenburg (2) Ghiselli,Gislaine (1) Teixeira Filho,José (1) Mais... Palavra-chave Caffeine (2) Capillary electrophoresis (1) Decaffeinated coffee (1) Energy drinks (1) HPLC (1) Method comparison (1) Micellar electrokinetic chromatography (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2013 (1) 2012 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última A fast and efficient method for the study of caffeine levels in energy drinks using micellar electrokinetic chromatography (MEKC) Ciênc. Tecnol. Aliment. Ballus,Cristiano Augusto; Meinhart,Adriana Dillenburg; Bizzotto,Carolina Schaper; Teixeira Filho,José; Godoy,Helena Teixeira. Energy drinks are becoming popular in Brazil and in the world due to their stimulant properties. Caffeine is present in energy drinks with the aim of stimulating the central nervous system and intensifying brain activity. On the other hand, the ingestion of high doses of caffeine can cause undesirable symptoms such as anxiety and tachycardia. Therefore, it is necessary to monitor the caffeine content added to energy drinks to guarantee that the levels in the final product are in accordance with the labeling and within the legislation limits. The goal of this work was to validate a fast, efficient, and low-cost method for the determination of caffeine in energy drinks by micellar electrokinetic chromatography (MEKC). A total of seven brands were analyzed,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Caffeine; Energy drinks; Micellar electrokinetic chromatography. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200029 Comparison of capillary electrophoresis and high performance liquid chromatography methods for caffeine determination in decaffeinated coffee Ciênc. Tecnol. Aliment. Bizzotto,Carolina Schaper; Meinhart,Adriana Dillenburg; Ballus,Cristiano Augusto; Ghiselli,Gislaine; Godoy,Helena Teixeira. Decaffeinated coffee accounts for 10 percent of coffee sales in the world; it is preferred by consumers that do not wish or are sensitive to caffeine effects. This article presents an analytical comparison of capillary electrophoresis (CE) and high performance liquid chromatography (HPLC) methods for residual caffeine quantification in decaffeinated coffee in terms of validation parameters, costs, analysis time, composition and treatment of the residues generated, and caffeine quantification in 20 commercial samples. Both methods showed suitable validation parameters. Caffeine content did not differ statistically in the two different methods of analysis. The main advantage of the high performance liquid chromatography (HPLC) method was the 42-fold lower... Tipo: Info:eu-repo/semantics/article Palavras-chave: Caffeine; Capillary electrophoresis; HPLC; Method comparison; Decaffeinated coffee. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000100027 Registros recuperados: 2 Primeira ... 1 ... Última

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