研究了淮山药黏液稳定性与黏弹响应的关系，发现在测试频率范围内，储能模量(G¢)始终大于损耗模量(G″)，且均随频率变化不大，呈现出较强的网络结构特征，黏液性质对频率不敏感。黏液的表观黏度(ha)与剪切速率(g&)的关系可用 Carreau 模型较好地拟合，g&增大，黏液发生剪切变稀现象，表明黏液性质对剪切速率的变化较敏感；黏液的增比黏度(ηsp)与浓度(c)的关系为3.010.12sphµc ±，黏液处于亚浓缠结区域。此外，盐度对黏液的黏弹响应影响较大，盐度增加，蛋白质分子间的静电排斥作用被屏蔽，分子间缠结增强，黏液的储能模量、损耗模量以及复数黏度(h*)逐渐上升，对黏液稳定性有一定影响。%Relationship between mucilage stability viscoelastic response of yam mucilage under different conditions was investigated. The dynamic storage modulus (G¢) and dynamic loss modulus(G″) of the mucilage increase slowly with increasing angular frequency(ω), which shows strong network structure characteristics and good stability. G¢>G² suggests that the yam mucilage exhibits more elasticity than viscidity. The relationship between apparent viscosity (ηa) of yam mucilage and shear rate (g&) can be well described by the Carreau model. Moreover, the relationship between specific viscosity (ηsp) and concentration (c) follows 3.01 0.12sph µc ± , which suggests that it is in the semidilute entangled regime. G¢, G²and complex viscosity (h*) of mucilage increase with increasing salt concentration, which may be attributed to the electrostatic repulsion between protein molecules is screened and it favors the entanglement of chains. The breakdown of Cox-Merz rule reveals that the long-range interaction exists among components in yam mucilage.
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