NDLI: A Rapid Method for Analysis of Phenylalanine in Cereal Products by MEKC-UV Using LC/MS/MS as a Comparative Method.

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A Rapid Method for Analysis of Phenylalanine in Cereal Products by MEKC-UV Using LC/MS/MS as a Comparative Method.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Valese, Andressa Camargo Vitali, Luciano Fett, Roseane Micke, Gustavo Amadeu de Oliveira, Marcone Augusto Leal Oliveira Costa, Ana Carolina
Description	Country affiliation: Brazil Author Affiliation: Valese AC ( Federal University of Santa Catarina, Department of Science and Food Technology, Ademar Gonzaga 1346, CP 88034-000, Itacorubi, Florianopolis, SC, Brazil.)
Abstract	The aim of this study was to develop a new and fast micellar electrokinetic chromatography (MEKC) method for the determination of phenylalanine in cereal samples. The background electrolyte was chosen by a factorial design and was composed of 30 mmol/L phosphoric acid, 100 mmol/L sodium dodecyl sulfate, and 25% methanol (v/v) at pH 1.9. A fused silica capillary (48.5 cm total length×8.5 cm effective length×50 µm id×375 µm od) was used in a short-end injection configuration, and direct UV detection was at 200 nm. The method was validated following the Eurachem guidelines, and values such as linearity (from 10.1 to 40.4 mg/L); recovery (86.8-103.9%); repeatability (0.06-0.22% for migration time and 1.14-4.82% for peak area); reproducibility (0.04-0.61% for migration time and 2.22-5.72% for peak area); and LOD and LOQ of 20 and 60 mg/100 g, respectively, were obtained. After the comparison involving selectivity and accuracy between capillary electrophoresis and LC/MS/MS method, the MEKC-UV method was successfully applied to analysis of phenylalanine in different cereal products.
File Format	HTM / HTML
ISSN	10603271
Issue Number	6
Volume Number	98
e-ISSN	19447922
Journal	Journal of AOAC International
Language	English
Publisher	AOAC International
Publisher Date	2015-11-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Analytical Discipline Chemistry Techniques Chromatography, Liquid Methods Chromatography, Micellar Electrokinetic Capillary Cereals Chemistry Phenylalanine Analysis Tandem Mass Spectrometry Spectrophotometry, Ultraviolet Comparative Study Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Analytical Chemistry Pharmacology Food Science Agronomy and Crop Science

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A Rapid Method for Analysis of Phenylalanine in Cereal Products by MEKC-UV Using LC/MS/MS as a Comparative Method.