A method for the analysis of monosaccharides derived from glycoproteins and glycolipids was described using the newly developed technique of capillary zone electrophoresis(CZE).It is found that,at ca.0.5-5 nL in- ject...A method for the analysis of monosaccharides derived from glycoproteins and glycolipids was described using the newly developed technique of capillary zone electrophoresis(CZE).It is found that,at ca.0.5-5 nL in- jection,CZE can offer a high resolution of most monoses from glycoprotein and glycolipids.A mixture of amino-and non-aminomonosaccharides,which is difficult to separate with chromatographic methods,was separated complet- ely by CZE in borate buffer after the monosaccharides were derivatized with 1-naphthylamine.展开更多
建立了毛细管区带电泳-间接紫外检测快速测定食品中乳糖、蔗糖、葡萄糖和果糖的方法。以水或5 mmol/L醋酸为样品提取液,未涂层熔融石英毛细管（30.2 cm（有效长度20 cm）×50μm）为分离柱,4 mmol/L山梨酸钾＋10 m m o l/L磷酸钠＋3...建立了毛细管区带电泳-间接紫外检测快速测定食品中乳糖、蔗糖、葡萄糖和果糖的方法。以水或5 mmol/L醋酸为样品提取液,未涂层熔融石英毛细管（30.2 cm（有效长度20 cm）×50μm）为分离柱,4 mmol/L山梨酸钾＋10 m m o l/L磷酸钠＋30 m m o l/L Na OH（p H 12.56）＋0.5 m m o l/L十六烷基三甲基溴化铵（CTAB）为分离缓冲液,在-8 k V下分离,于254 nm波长下检测,10 min内实现了食品中上述4种糖的同时分离与测定。乳糖、蔗糖、葡萄糖和果糖的检出限（S/N=3）分别为50、75、25和25 mg/L,定量限（S/N=10）分别为150、225、75和75 mg/L,回收率在87.0%～107.0%之间,相对标准偏差在1.2%～4.7%之间。整个实验过程未使用有机溶剂。用该法测定了9种食品样品及1个质控样品,结果表明该法简单、快速、准确,适用于食品中乳糖、蔗糖、葡萄糖和果糖的日常测定。展开更多
基金This project is supported by National Natural Sience Foundation of China
文摘A method for the analysis of monosaccharides derived from glycoproteins and glycolipids was described using the newly developed technique of capillary zone electrophoresis(CZE).It is found that,at ca.0.5-5 nL in- jection,CZE can offer a high resolution of most monoses from glycoprotein and glycolipids.A mixture of amino-and non-aminomonosaccharides,which is difficult to separate with chromatographic methods,was separated complet- ely by CZE in borate buffer after the monosaccharides were derivatized with 1-naphthylamine.
文摘建立了毛细管区带电泳-间接紫外检测快速测定食品中乳糖、蔗糖、葡萄糖和果糖的方法。以水或5 mmol/L醋酸为样品提取液,未涂层熔融石英毛细管（30.2 cm（有效长度20 cm）×50μm）为分离柱,4 mmol/L山梨酸钾＋10 m m o l/L磷酸钠＋30 m m o l/L Na OH（p H 12.56）＋0.5 m m o l/L十六烷基三甲基溴化铵（CTAB）为分离缓冲液,在-8 k V下分离,于254 nm波长下检测,10 min内实现了食品中上述4种糖的同时分离与测定。乳糖、蔗糖、葡萄糖和果糖的检出限（S/N=3）分别为50、75、25和25 mg/L,定量限（S/N=10）分别为150、225、75和75 mg/L,回收率在87.0%～107.0%之间,相对标准偏差在1.2%～4.7%之间。整个实验过程未使用有机溶剂。用该法测定了9种食品样品及1个质控样品,结果表明该法简单、快速、准确,适用于食品中乳糖、蔗糖、葡萄糖和果糖的日常测定。
