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α-Cyclodextrin as a restricted access mobile phase for reversed-phase liquid chromatography with fluorimetric detection of phenolic compounds

✍ Scribed by F.García Sánchez; A.Navas Díaz; J Lovillo; L.S Feria

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
529 KB
Volume
328
Category
Article
ISSN
0003-2670

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✦ Synopsis

A reversed-phase liquid chromatographic (LC) method to determine the phenolic derivatives, p-hydroxybenzoic (PHB), ferulic and vanillic acids, and methyl paraben (MPB), was developed. The mobile phase used was 1 x lo-'M cY-cyclodextrin/ acetate buffer pH 4.6 (l:l), that forms inclusion complexes with the analytes. The inclusion process enhances the fluorescence properties of the phenolic compounds, allowing detection limits in the l-5 ngml-' levels. Formation constants were calculated from retention parameters. The method was applied to the determination of the phenolic compounds in beer by applying the method of standard additions.

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