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海带中岩藻多糖的分离纯化与结构分析

作  者:
张文清;左萍萍;徐辰;杨蕾;张玉龙;夏玮
单  位:
华东理工大学化学与分子工程学院上海市功能性材料化学重点实验室
关键词:
海带;岩藻多糖;分离纯化;结构分析
摘  要:
通过DEAE-纤维素和凝胶过滤色谱反复柱层析,采用苯酚-硫酸法和高效凝胶过滤色谱法(HPGFC)检测,从提取的海带岩藻多糖中得到了均一多糖TC-1,并结合多种分析手段:包括糖组成分析、甲基化分析、红外光谱(IR)分析等对其化学结构进行测定。结果表明:TC-1重均相对分子质量(Mw)为3.7×105,主要由岩藻糖构成,此外还伴有少量的木糖、甘露糖、葡萄糖和半乳糖组成的结构复杂的硫酸酯多糖。其中岩藻糖糖基以1,4-、1,3-连接方式存在;木糖以1,3-连接方式存在;甘露糖以1,3-、1,6-连接方式存在;葡萄糖以1,3,4-、1,2,4,6-连接方式存在;半乳糖以1,6-、1,3,6-、1,3,4,6-连接方式存在。
译  名:
Isolation,Purification and Structural Analysis of Fucoidan from Kelp
作  者:
ZHANG Wen-qing,ZUO Ping-ping,XU Chen,YANG Lei,ZHANG Yu-long,XIA Wei(Shanghai Key Laboratory of Functional Materials Chemistry,School of Chemistry and Molecular Engineering, East China University of Science and Technology,Shanghai 200237,China)
关键词:
kelp;fucoidan;isolation and purification;structural analysis
摘  要:
A homogeneous polysaccharide named as TC-1 was obtained from kelp by DEAE-cellulose and gel filtration chromatography.Its chemical structure was characterized by means of monosaccharide composition analysis,methylation analysis and IR spectroscopic analysis.TC-1 was a complex sulfated polysaccharide with a weight-average molecular weight of 3.7 × 105.TC-1 mainly consisted of fucose and small amounts of xylose,mannose,glucose and galactose were also found.The chain of TC-1 included 1,4-linked or 1,3-linked fucose,1,3-linked xylose,1,3-linked or 1,6-linked mannose,1,3,4-linked or 1,2,4,6-linked glucose,and 1,6-linked,1,3,6-linked,or 1,3,4,6-linked galactose.

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