Abstract：
The interactions between carboxymethyl cellulose sodium and proteins can regulate the interfacial and rheological properties of HIPEs, which plays a leading role in the stabilities of HIPEs. This article prepared various ratios of soluble soy protein isolate/carboxymethyl cellulose sodium (SPI/CMC) complexes in different proportions and examined the impact of various ratios of complexes on the structure and interface properties of complexes systems. Additionally, it explored the co-emulsification mechanism of HIPEs using SPI and CMC. At appropriate ratios of SPI/CMC, SPI and CMC mainly combine through non covalent binding and form complexes with smaller particle sizes and stronger electrostatic repulsion. The interfacial properties indicated that adding appropriate CMC increased the pliability and reduced the interfacial tension, while also enhancing the wettability of SPI/CMC complexes. At the ratio of 2:1, the SPI/CMC complexes-stabilized HIPPEs exhibited smaller oil droplets size, tighter droplet packing, and thicker interfacial film through the bridging of droplets and the generation of stronger gel-like network structures to prevent the coalescence/flocculation of droplets. These results suggested that the appropriate ratios of SPI/CMC can improve the physical stability of HIPEs by changing the structure and interface characteristics of the SPI/CMC complexes. This work provided theoretical support for stable HIPEs formed with protein-polysaccharide complexes.
摘要：
羧甲基纤维素钠与蛋白质之间的相互作用可以调节HIPEs的界面和流变特性，在HIPEs的稳定性中起着主导作用。本文以不同比例制备了不同比例的可溶性大豆分离蛋白/羧甲基纤维素钠(SPI/CMC)复合物,考察了不同比例的复合物对复合物体系结构和界面性质的影响。此外,探讨了SPI和CMC对HIPEs的共乳化机理。在合适的SPI/CMC比例下，SPI和CMC主要通过非共价结合结合，形成粒径较小、静电斥力较强的复合物。界面性能表明，添加适当的CMC增加了柔韧性，降低了界面张力，同时也增强了SPI/CMC复合物的润湿性。在2:1的比例下，SPI/CMC复合物稳定的HIPPE表现出较小的油滴尺寸，更紧密的液滴包装，和较厚的界面膜通过液滴的桥接和更强的凝胶状网络结构的产生，以防止液滴的聚结/絮凝。这些结果表明，SPI/CMC的合适比例可以通过改变SPI/CMC复合物的结构和界面特性来提高HIPEs的物理稳定性。这项工作为蛋白质-多糖复合物形成稳定的HIPEs提供了理论支持。
