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A rapid method for the identification and quantitation of sorbic acid and benzoic acid in a variety of beverages and foods by micellar electrokinetic capillary chromatography (MECC) is described. Dehydroacetic acid was used as the internal standard. The separations were achieved using a 68 cm fused silica capillary column with a buffer comprising 0 05 m sodium dodecylsulphate and 0 02m disodium...
A rapid micellar electrokinetic capillary chromatographic method for the determination of the total l-ascorbic acid content of a variety of fruits and vegetables is described. The vitamin is extracted from the foods with 3% metaphosphoric acid and stabilized with aqueous 0 2% d,l-dithiothreitol before analysis. d-Erythorbic acid is used as the internal standard. The analyses are performed with...
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