Department of Food Science and Biotechnology, Dongguk University, Goyang, Gyeonggi 410-820, Republic of Korea.
Department of Food Science and Biotechnology, Dongguk University, Goyang, Gyeonggi 410-820, Republic of Korea.
Int J Biol Macromol. 2018 Aug;115:124-128. doi: 10.1016/j.ijbiomac.2018.04.052. Epub 2018 Apr 12.
The effect of CMC on the steady and dynamic shear rheological properties of binary mixtures of XG and GG was examined at different mixing ratios. All XG-GG-CMC ternary mixtures had high shear-thinning behavior and the n value of the sample with 5% CMC was the smallest compared with those of other samples. A marked increase in K and η values was observed for ternary mixtures at a lower content (5%) of CMC, indicating that the synergistic interactions of the XG-GG binary mixture were affected by the content of CMC. The effect of temperature on the η was well described by the Arrhenius equation for all samples. The activation energy values of all ternary gum mixtures are higher than that of binary gum mixture, and these values also decreased with an increase in CMC content from 5 to 15%. The dynamic moduli of ternary gum mixtures decreased with an increase in CMC content. The tan δ value of the ternary gum mixture with 5% CMC was much lower than those of other ternary mixtures. In general, these results suggest that the flow and dynamic shear rheological properties of XG-GG binary mixtures are strongly influenced by a small addition of CMC.
研究了不同混合比例下 CMC 对 XG 和 GG 二元混合物稳态和动态剪切流变性能的影响。所有 XG-GG-CMC 三元混合物均表现出强烈的剪切变稀行为，与其他样品相比，CMC 含量为 5%的样品的 n 值最小。在较低含量（5%）的 CMC 下，三元混合物的 K 和 η 值显著增加，表明 XG-GG 二元混合物的协同相互作用受到 CMC 含量的影响。所有样品的 η 值均可用阿仑尼乌斯方程很好地描述温度的影响。所有三元胶混合物的活化能值均高于二元胶混合物，且随着 CMC 含量从 5%增加到 15%，这些值也降低。三元胶混合物的动态模量随 CMC 含量的增加而降低。CMC 含量为 5%的三元胶混合物的 tan δ 值远低于其他三元混合物。总的来说，这些结果表明，少量 CMC 的添加强烈影响 XG-GG 二元混合物的流动和动态剪切流变性能。
