Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, PR China.
Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, PR China.
Carbohydr Polym. 2015 Dec 10;134:566-72. doi: 10.1016/j.carbpol.2015.08.015. Epub 2015 Aug 12.
Hydrodynamic behavior and dilute solution properties of Ulva fasciata polysaccharides (UFP) were investigated. Experimental results indicated that the variation of hydrodynamic behavior of UFP was affected by the type and concentration of salts. The specific viscosity of UFP in water increased with its increasing concentration. The slopes of the double logarithmic plots in the dilute and semi-dilute solutions were 0.86 and 1.99, respectively. The molecular conformation could be semi-flexible like. Huggins plots of UFP solutions in the presence of salts including Na(+), K(+), Mg(2+) and Ca(2+) showed that the hydrodynamic behavior of the UFP was strongly affected by the types and strength of salt ion. The stiffness parameter of UFP solution was 0.1149, higher than that of other reported polysaccharides, indicating that it could tolerate high salt concentration. Dynamic rheological results suggested that 0.5% UFP solution was a typical characteristic of polymer solution in the dilute region. This work provided some valuable and fundamental information in understanding the physicochemical properties of UFP solution.
研究了石莼多糖（UFP）的流体力学行为和稀溶液性质。实验结果表明，UFP 流体力学行为的变化受盐的类型和浓度的影响。UFP 在水中的比浓粘度随其浓度的增加而增加。在稀溶液和半稀溶液中，双对数图的斜率分别为 0.86 和 1.99。分子构象可能类似于半柔性。在含有 Na(+)、K(+)、Mg(2+)和 Ca(2+)等盐的 UFP 溶液的 Huggins 图表明，UFP 的流体力学行为受到盐离子类型和强度的强烈影响。UFP 溶液的刚性参数为 0.1149，高于其他报道的多糖，表明其能够耐受高盐浓度。动态流变学结果表明，0.5%UFP 溶液在稀区是典型的聚合物溶液特征。这项工作为理解 UFP 溶液的物理化学性质提供了一些有价值的基础信息。
