Fibre-diffraction studies of the extracellular polysaccharide from Pseudomonas elodea
Fibre-diffraction studies of the extracellular polysaccharide from Pseudomonas elodea
复制标题
伊乐假单胞菌胞外多糖的纤维衍射研究
DOI：
10.1016/0141-8130(82)90089-7
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发表时间：
1982
影响因子：
8.2
通讯作者：
V. Morris
中科院分区：
文献类型：
--
作者：
V. Carroll;M. Miles;V. Morris
X射线纤维衍射技术已被用来探测结构的微生物多糖从假单胞菌clodca（结冷胶）。该聚合物采用三重螺旋结构，轴向重复长度为0.94 nm。聚合物形成弱弹性热可逆凝胶，脱乙酰化后形成硬脆凝胶。脱乙酰化已显示出提高结晶度。三角形晶胞上的赤道反射折射率（a= B= 1.64 nm）。
X-ray fibre diffraction techniques have been used to probe the structure of the microbial polysaccharide from Pseudomonas clodca (gellan gum). The polymer adopts a threefold helical structure with an axial repeat of 0.94 nm. The polymer form weak elastic thermoreversible gels and on deacetylation forms rigid brittle gels. Deacetylation has been shown to enhance crystallinity. Equatorial reflections index onto a trigonal unit cell (a= b= 1.64 nm.