色谱Issue(8)：816-821,6.DOI:10.3724/SP.J.1123.2015.03042
毛细管区带电泳-间接紫外检测法快速测定食品中乳糖、蔗糖、葡萄糖和果糖
Rapid determination of lactose,sucrose,glucose and fructose in foods by capillary zone electrophoresis with indirect ultraviolet detection
摘要
Abstract
A new and rapid method for the simultaneous determination of lactose,sucrose, glucose and fructose by capillary zone electrophoresis( CZE)with indirect ultraviolet detection was developed. The separation was completed with an uncoated fused-silica capillary with 30.2 cm of total length( effective length of 20 cm)× 50 μm. The separation buffer consisted of 4 mmol/L potassium sorbate,10 mmol/L sodium phosphate,30 mmol/L NaOH( pH 12. 56)and 0. 5 mmol/L hexadecytrimethylammonium bromide( CTAB). The separation was performed at a voltage of -8 kV with the ultraviolet detection at 254 nm. The analysis of the four carbohydrates was completed within 10 min. The limits of detection( S/N=3)for lactose,sucrose,glucose and fructose were 50,75,25 and 25 mg/L,and the limits of quantification( S/N=10)were 150,225,75 and 75 mg/L,respectively. The average recoveries for the four carbohydrates were in the range of 87. 0%-107. 0% with the relative standard deviations of 1. 2%-4. 7%. No organic solvent was consumed throughout the whole process of the analysis. The method was used for the analysis of nine food samples and a quality control sample. The results demonstrated that the method is simple,rapid,accurate,and suitable for the routine analysis of the four carbohy-drates in food samples.关键词
毛细管区带电泳/间接紫外法/乳糖/蔗糖/葡萄糖/果糖/食品Key words
capillary zone electrophoresis ( CZE )/indirect ultraviolet detection/lactose/sucrose/glucose/fructose/foods分类
化学化工引用本文复制引用
张欢欢,李疆,赵珊,丁晓静,王志..毛细管区带电泳-间接紫外检测法快速测定食品中乳糖、蔗糖、葡萄糖和果糖[J].色谱,2015,(8):816-821,6.基金项目
北京市卫生系统高层次卫生技术人才培养项目（2013-2-036）． （）
