两种罗汉果多糖的IR及^(13)CNMR分析  

Analysis of Siraitia grosvenorii Polysaccharides by IR and ^(13)C NMR Spectroscopy

作　　者：李俊[1] 张艳军[1] 黄锡山[1] 何星存[1] 苏小建[1] 

机构地区：[1]广西师范大学环境与资源学院,广西桂林541004

出　　处：《化学世界》2007年第2期81-82,85,共3页Chemical World

基　　金：广西科学基金资助项目(桂科基0575043)

摘　　要：利用FT IR和13C NMR技术对罗汉果中的两种多糖SGPS1(Siraitia grosvenorii Polysaccharides,SGPS)和SGPS2进行分析。从SGPS1和SGPS2的红外吸收(4000-500 cm-1)可知,它们具有典型的多糖吸收特征,SGPS1中的单糖残基以吡喃环和呋喃环的形式存在,SGPS2中的单糖残基以α-吡喃环的形式存在。同时运用13C NMR证实了这两种多糖的单糖残基环状构型及糖苷键构型。The structures of SGPS1 and SGPS2 were studied by FT IR and ^13C NMR spetroscopy. The characteristic absorbance peaks from 4000 to 500 cm^-1 in their IR spectra indicated that SGPS1 consisted of pyranose and furanose and SGPS2 consisted of α-pyranose. The structures of SGPS1 and SGPS2 were also confirmed on the basis of 13C NMR spectroscopic analysis, whose result was consistent with that of IR spectroscopy.

关 键 词：罗汉果 多糖 傅里叶变换红外光谱 ^13C 核磁共振波谱 

分 类 号：TQ225.1[化学工程—有机化工]