Analysis of advanced glycation endproducts in selected food items by ultra-performance liquid chromatography tandem mass spectrometry: Presentation of a dietary AGE database. (1st January 2016) - Scheijen, Jean L.J.M.
Highlights: We present a validated LC–MS/MS method to determine AGE concentration in foods. Three major AGEs were determined; CML, CEL and MG-H1. High-heat processed food items were high in AGE content. Fruits, vegetables, butter and coffee had the lowest AGE content. We present a 190-item AGE database that can be used to quantify dietary AGE intake. Abstract: The aim of this study was to validate an ultra-performance liquid chromatography tandem mass-spectrometry (UPLC–MS/MS) method for the determination of advanced glycation endproducts (AGEs) in food items and to analyze AGEs in a selection of food items commonly consumed in a Western diet. N ε -(carboxymethyl)lysine (CML), N ε -(1-carboxyethyl)lysine (CEL) and N δ -(5-hydro-5-methyl-4-imidazolon-2-yl)-ornithine (MG-H1) were quantified in the protein fractions of 190 food items using UPLC–MS/MS. Intra- and inter-day accuracy and precision were 2–29%. The calibration curves showed perfect linearity in water and food matrices. We found the highest AGE levels in high-heat processed nut or grain products, and canned meats. Fruits, vegetables, butter and coffee had the lowest AGE content. The described method proved to be suitable for the quantification of three major AGEs in food items. The presented dietary AGE database opens the possibility to further quantify actual dietary exposure to AGEs and to explore its physiological impact on human health.