Analysis of Monosaccharide Composition of Pu-erh Tea Polysaccaride by Pre-column Derivatization HPLC  

柱前衍生HPLC法分析普洱茶多糖中单糖组成(英文)

作　　者：郭威[1] 周斌星[1] 罗玲[1] 李扬[1] 柴洁[1] 杨超[1] 马存强[1] 

机构地区：[1]云南农业大学普洱茶学院,云南昆明650201

出　　处：《Agricultural Science & Technology》2013年第4期556-558,572,共4页农业科学与技术（英文版）

基　　金：Supported by National Key Technologies R & D Program(2007BAD58B03)~~

摘　　要：[Objective] This study aimed to establish a pre-column derivatization HPLC method for the identification and analysis of monosaccharide composition of Pu-erh tea polysaccharide. [Method] Pu-erh tea polysaccharide was extracted using the wa- ter extraction method, further isolated and purified by DEAE cellulose-52 columns. The obtained tea polysaccharide and four components TPS1, TPS2, TPS3 and TPS, were first derived by 1-phenyl-3-methyl-5-pyrazolone （PMP）, and then the PMP derivatives of monosaccharide were analyzed by high performance liquid chromatog- raphy （HPLC）. [Result] Pu-erh tea polysaccharide contained eight kinds of monosac- chaddes （mannose, rhamnose, glucuronic acid, galacturonic acid, grucose, galactose, arabinose, fucose）, without xylose; so it was the same with TPS1; each of TPS2, TPS3 and TPS4 contained seven monosaccharides, while no fucose. [Conclusion] This method is simplified and rapid, which can be used to determine the monosac- charide composition of Pu-erh tea polysaccharide and monosaccharide content.[目的]建立柱前衍生HPLC法鉴别和分析普洱茶多糖中单糖组成。[方法]采用水提法提取普洱茶多糖,经DEAECellulose-52纤维素柱分离纯化;茶多糖及其组分TPS1、TPS2、TPS3、TPS4经1-苯基-3-甲基-5-吡唑啉酮(PMP)衍生化后,利用高效液相色谱法,分析单糖的PMP衍生物。[结果]普洱茶多糖中含有甘露糖、鼠李糖、葡萄糖醛酸、半乳糖醛酸、葡萄糖、半乳糖、阿拉伯糖、岩藻糖8种单糖,不含有木糖;TPS1中含有全部8种单糖;TPS2、TPS3和TPS4均由7种单糖组成,且都不含岩藻糖。[结论]此方法简便,快速;可用于测定普洱茶多糖中单糖的组成分析和含量测定。

关 键 词：Pu-erh tea POLYSACCHARIDE HPLC Pre-column derivatization 

分 类 号：TS272.7[农业科学—茶叶生产加工] O657.72[轻工技术与工程—农产品加工及贮藏工程]