Determination of sugar alcohols in confectioneries by high-performance liquid chromatography after nitrobenzoylation.

S Nojiri, N Taguchi, M Oishi, S Suzuki, Shuko Nojiri, Nobuo Taguchi, Mistuo Oishi, Sukeji Suzuki

Index: J. Chromatogr. A. 893(1) , 195-200, (2000)

Full Text: HTML

Abstract

A method was developed for the determination of sugar alcohols, meso-erythritol, xylitol, D-glucitol, D-mannitol, maltitol and parachinit by high-performance liquid chromatography (HPLC). The sugar alcohols were converted into strong ultraviolet (UV)-absorbing derivatives with p-nitrobenzoyl chloride. HPLC was performed on a phenyl column, using acetonitrile-water (67:33) as mobile phase and UV detection (260 nm). The calibration curves for all sugar alcohols tested were linear in the 10-250 microg/ml range. The average recoveries of the sugar alcohols from four sugarless confectioneries spiked at 5 and 10% levels of six sugar alcohol standards ranged from 73.2 to 109.0% with relative standard deviations ranging from 0.7 to 9.0%. The detection limit of the developed method was 0.1% for the above sugar alcohols contained in the samples.