自养小球藻硫酸多糖的红外光谱分析  

Infrared spectrometry of sulfate polysaccharides of Chlorella autotropica

作　　者：梁燕茹[1] 李文权[1] 刘四光[1] 

机构地区：[1]厦门大学海洋系,亚热带海洋研究所,福建厦门361005

出　　处：《海洋科学》2007年第11期1-4,共4页Marine Sciences

基　　金：国家自然科学基金资助项目(39870565)

摘　　要：利用二乙胺基乙基琼脂糖凝胶柱层析纯化自养小球藻(Chlorella autotropica)粗多糖,得到3个硫酸多糖组分(A,B,C);利用高效液相色谱仪和熔点仪测定了3个多糖的分子质量和熔点;利用BaCl2浊度法测定了硫酸多糖中硫酸根的质量分数;利用傅立叶变换红外光谱分析了海水自养小球藻3个硫酸多糖组分的环状结构、半缩醛羟基构型及取代基类型。结果显示,3个硫酸多糖组分的硫酸根的质量分数分别为0.77%,8.46%,2.69%,3个组分均含有硫酸基、酰氨基,葡萄糖是3个硫酸多糖组分的主要组成单糖;3个硫酸多糖组分组成单糖的环构型均是吡喃环,成苷的半缩醛羟基构型有一定差异,A是α构型,B、C是α、β两种半缩醛羟基构型并存。为深入研究自养小球藻硫酸多糖的结构及抗癌活性提供基础。In order to research the structure and anti-HIV activity of sulfate polysaccharides, three white refined sulfate polysaccharides （A, B, C） were gained with the DEAE sepharose column chromatographic analysis; molecular weights and melting points of three sulfate polysaccharides were got with the HPLC technology and melting point apparatus; determination of sulphate content was made by barium chloride gravimetric method; the chemical compositions and configuration of marine Chlorella autotropica polysaccharides basicly extracted from marine Chlorella autotropica were studied by FT-IR spectroscopy. The results show that sulphate contents of three sulfate polysaccharides were 0.77%, 8.46%, 2.69% respectively, all the three marine Chlorella autotropica polysaccharides have acylamino radical and sulfate radical. Glucose is always a dominant monosaccharide in the three sulfate polysaccharides. Pyranose is the major component of the sulfate polysaccharide in the A, with one glycoside configuration, α-hemiacetal hydroxyl. Pyranose is also the major component of the sulfate polysaccharide in the B and C, with two glycoside configurations, α-hemiacetal hydroxyl and β-hemiacetal hydroxyl coexisted.

关 键 词：自养小球藻(Chlorella autotropica) 硫酸多糖 红外光谱 

分 类 号：P745[天文地球—海洋生物学]