从石莼中分离得到的一种新型多糖：结构与理化性质。
A novel polysaccharide isolated from Ulva Pertusa: Structure and physicochemical property.
机构信息
Institute of Extreme Environment Nutrition and Protection, Harbin Institute of Technology, Harbin, China; National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin, China; School of Chemical Engineering and Chemistry, Harbin Institute of Technology, Harbin, China.
School of Chemical Engineering and Chemistry, Harbin Institute of Technology, Harbin, China.
出版信息
Carbohydr Polym. 2020 Apr 1;233:115849. doi: 10.1016/j.carbpol.2020.115849. Epub 2020 Jan 10.
A new water-soluble polysaccharide UPP was obtained from Ulva Pertusa and its structure was studied. The structural analysis results showed that UPP was composed of eight residues. The bone structure of UPP was →4)-β-D-Xylp-(1→4)-α-L-Rhap3S(1→3,4)-β-L-Arap(1→3)-α-L-Rhap(1→2,4)-α-L-Rhap(1→4)-α-D-Galp(1→ and there were two main branches. The branch structure at the 3-position of 1,3,4-β-L-Arap was →3,4)-β-L-Arap(1→4)-β-D-Glcp3Me(1→4)- β-D-GlcpA(1→ and the branch structure at 2-position of 1,2,4-α-L-Rhap was →4)-β-D-GlcpA(1→4)-β-D-Xylp(1→. In addition, the physicochemical property analysis showed that UPP was a semi-crystalline polymer and there was no triple-helical structure. This structure analysis of UPP will be beneficial for future research on the algal polysaccharides.
从孔石莼中提取到一种新的水溶性多糖 UPP，并对其结构进行了研究。结构分析结果表明，UPP 由八个残基组成。UPP 的骨架结构为→4)-β-D-Xylp-(1→4)-α-L-Rhap3S(1→3,4)-β-L-Arap(1→3)-α-L-Rhap(1→2,4)-α-L-Rhap(1→4)-α-D-Galp(1→，并且存在两个主要支链。1,3,4-β-L-Arap 上 3 位的支链结构为→3,4)-β-L-Arap(1→4)-β-D-Glcp3Me(1→4)-β-D-GlcpA(1→，1,2,4-α-L-Rhap 上 2 位的支链结构为→4)-β-D-GlcpA(1→4)-β-D-Xylp(1→。此外，理化性质分析表明 UPP 是一种半结晶聚合物，不存在三螺旋结构。对 UPP 结构的分析将有助于未来对藻类多糖的研究。
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