title: Separation and determination of sugars by reversed-phase high-performance liquid chromatography after pre-column microwave-assisted derivatization.
abstract: In this study the possibility of derivatizing sugars using microwave irradiation was investigated. The amount of reagent, irradiation intensity, and derivatization time were optimized. In the derivatization of sugars with p-nitroaniline the reaction is complete within 5 min at 600 W when the p-nitroaniline-to-sugar and NaBH3CN-to-sugar mole ratios were above 1.4 and 3.1, respectively. A Doehlert design was used to optimize the mobile phase for separation of p-nitroaniline-labeled sugars; and the best separation was obtained by use of 0.01 mol L-1 acetate buffer at pH 4.40 containing 11.0% acetonitrile. Analysis using this method was highly sensitive and analysis time was short. Finally, a food sample was analyzed using the proposed method.
authors.affiliation: Department of Chemistry, University of Isfahan, 81746-73441, Isfahan, Iran.
authors.forename: Fariborz
authors.initials: F
authors.lastname: Momenbeik
authors.forename: Jafar H
authors.initials: JH
authors.lastname: Khorasani