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.4 Apparatus and operating conditions Analyses were carried out with an Agilent 1600 capillary electrophoresis system (Waldbronn, Germany). The data processing was carried out with the Agilent ChemStation software. Separations were performed in

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Acta Alimentaria
Authors: G. Balázs, I. Baracskai, M. Nádosi, A. Harasztos, F. Békés, and S. Tömösközi

-on-a-Chip capillary electrophoresis. —in: Black, C.K., Panozzo, J.F. & Rebetzke, G.J. (Eds), Proceedings of the 54th Australian Cereal Chemistry Conference and the 11th Wheat Breeders’ Assembly . Royal Australian Chemical Institute, Melbourne, pp. 411

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Black elder inflorescence has been traditionally used in Central Europe both in folk and official medicine. This plant material is a rich source of two biologically active components, rutin and chlorogenic acid. Nevertheless, there is a lack of data on the changes of their content during processing.The stability of rutin and chlorogenic acid during drying and the long-term storage of black elder inflorescence were analysed in this study. The rutin content was determined by capillary electrophoresis using solid-phase extraction. HPLC was used for the determination of chlorogenic acid. The dependence of rutin and chlorogenic acid content on the temperature of drying and storage duration were monitored and statistically evaluated by a two-way ANOVA test. The contents of rutin and chlorogenic acid revealed no statistically significant changes when dried at temperatures of 22 °C and 30 °C. The significant decrease in contents of both studied compounds was found at a drying temperature of 50 °C. The decrease in content of rutin was about 20%, in chlorogenic acid about 12%.The content of both studied compounds also decreased after long-term storage (at a temperature of 22 °C for one year). The decrease in content of rutin was greater than that of chlorogenic acid.

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Kovács, Á., Simon-Sarkadi, L. & Ganzler, K. (1999): Determination of biogenic amines by capillary electrophoresis. J. Chrom. A , 836 , 305-313. Determination of biogenic amines by capillary electrophoresis

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Jimidar, M., Hartmann, C., Cousement, N. & Massart, D.L. (1995): Determination of nitrate and nitrite in vegetables by capillary electrophoresis with indirect detection. J. Chromat. A , 706 , 479

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Mierzejewska, D., Panasiuk, R. & Jéddrychowski, L. (2002): Capillary electrophoresis determination of denaturation degree of cow milk α-lactalbumin during heat treatment of whey. Milchwissenschaft , 57 , 9-13. Capillary

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Lange, J., Thomas, K. & Wittmann, C. (2002): Comparison of a capillary electrophoresis method with high-performance liquid chromatography for the determination of biogenic amines in various food samples. J. Chromat. B , 779 , 229

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Horie, M., Ishikawa, F., Oishi, M., Shido, T., Yasui, A. & Ito, K. (2007): Rapid determination of cyclamate in foods by solid-phase extraction and capillary electrophoresis. J. Chromat. A. , 1154 , 423

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. Lavigne , V. , Pons , A. & Duboudieu , D. ( 2007 ): Assay of glutathione in must and wines using capillary electrophoresis and laser-induced fluorescence detection. Changes in concentration in dry white wines during alcoholic

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Acta Alimentaria
Authors: A. Csikos, A. Hodzic, E. Pasic-Juhas, A. Javor, A. Hrković-Porobija, T. Goletic, G. Gulyas, and L. Czegledi

-CANAS , V. , G ONZÁLEZ , R. & C IFUENTES , A. ( 2004 ): The combined use of molecular techniques and capillary electrophoresis in food analysis . Trends Anal. Chem. , 23 , 637 – 643

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