【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。更多还原

【Abstract】 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.更多还原