乌头母根、子根、须根多糖的比较

目的:研究乌头母根、子根、须根的多糖含量及单糖组成.方法:分别以精制多糖测得多糖对葡萄糖的换算因子,以苯酚-硫酸分光光度法测定乌头母根、子根、须根的多糖含量;以1-苯基-3-甲基-5-吡唑啉酮(PMP)柱前衍生高效液相色谱法测定多糖中的单糖组成.结果:乌头母根、子根、须根的多糖含量分别为22.0%,33.5%,6.1%;母根、子根、须根的多糖中主要含有葡萄糖,另外含有少量的半乳糖醛酸、半乳糖、阿拉伯糖,子根中还含有甘露糖,须根中还含有甘露糖、鼠李糖、木糖.结论:多糖含量检测方法简便、快速,测定结果更客观、准确;须根中多糖含量最低,且单糖组成与母根、子根有明显不同.

Comparasion of polysaccharides in parent root, daughter root and rootlet of Aconitum carmichaeli

Objective : To study the polysaccharides contents and monosaccharide compositions in parent root, daughter root and rootlet of Aconitum carmichaeli. Method : The conversion coefficient of A. carmichaeli polysaccharide to glucose was obtained by refined polysaccharides, and then the contents of crude polysaccharides in parent root, daughter root and rootlet were determined by sulfuric-phenol spectrometry method;analysis of monosaccharide compositions in polysaccharides from A. carmichaeli was carried out by pre-column derivatization high performance liquid chromatography with 1-phenyl-3-methyl-5-pyrazolone(PMP). Result : The contents of polysaccharides in parent root, daughter root and rootlet were 22.02%, 33.53% and 6.10%, respectively. Parent root, daughter root and rootlet mainly contained glucose, and in addition they contained a small amount of galacturonic acid, galactose and arabinose. Daughter root contained mannose yet, and rootlet still contained mannose, rhamnose and xylose. Conclusion : The method is simple, rapid, and accurate. The content of polysaccharide in rootlet is lowest, and monosaccharide compositions in rootlet are significantly different from parent root and daughter root.