Structural study of fucoidan from sea cucumber Acaudina molpadioides: A fucoidan containing novel tetrafucose repeating unit

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• 作者：Long Yu ; Lei Ge ; Changhu Xue ; Yaoguang Chang ; Cuiyu Zhang ; Xiaoqi Xu ; Yanchao Wang
• 关键词：Sea cucumber ; Fucoidan ; Structure ; NMR ; Fucoidanase
• 刊名：Food Chemistry
• 出版年：2014
• 出版时间：1 January, 2014
• 年：2014
• 卷：142
• 期：Complete
• 页码：197-200
• 全文大小：528 K

文摘

Structure of fucoidan from sea cucumber Acaudina molpadioides (Am-FUC) was investigated in this study. Low molecular weight polysaccharide of Am-FUC (Am-LMW) was prepared by enzymatic degradation and assayed by nuclear magnetic resonance. According to the structure of Am-LMW, and referring to previously reported information of Am-FUC oligosaccharides, the structure of Am-FUC was elucidated as [¡ú3-¦Á-l-Fucp-1 ¡ú 3-¦Á-l-Fucp2,4(O)-1 ¡ú 3-¦Á-l-Fucp-1 ¡ú 3-¦Á-l-Fucp2(O)-1¡ú]_n. Compared to other investigated fucoidans, which also consist of tetrafucose repeating units with 1 ¡ú 3-linkages, Am-FUC contains a novel repeating unit distinctive in sulphation pattern.