Interactions between the protein-epigallocatechin gallate complex and nanocrystalline cellulose: A systematic study
Interactions between the protein-epigallocatechin gallate complex and nanocrystalline cellulose: A systematic study
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DOI：
10.1016/j.foodchem.2022.132791
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发表时间：
2022-04-07
期刊：
影响因子：
8.8
通讯作者：
Xu, Xinglian
中科院分区：
文献类型：
--
作者：
Chen, Jiahui;Gao, Qianni;Xu, Xinglian
本文系统地研究了蛋白质-表没食子儿茶素没食子酸酯（蛋白质-表没食子儿茶素没食子酸酯）复合物与纳米纤维素（NCC）之间的非共价相互作用。流变性能，包括大振幅振荡剪切（LAOS），瞬态流变，和常规流变的混合物进行了评价。如所获得的，柔性肌原纤维蛋白-表没食子儿茶素没食子酸酯（MP-EGCG）和刚性卵清蛋白-表没食子儿茶素没食子酸酯（Ova-EGCG）遵循不同的规则，在调节系统的稳定性，因为在非共价相互作用的差异，触发不同的流变学反应的复合物。此外，MP-EGCG/NCC在LAOS流动过程中表现出明显的应变过冲，而Ova-EGCG/NCC则没有。值得注意的是，纤维状MP-EGCG网络是主导形成具有强氢键、偶极-偶极相互作用和/或货车范德华力的更稳定悬浮体系的因素。本研究为进一步研究蛋白质-多酚复合物与多糖的相互作用提供了思路。
In this work, the noncovalent interactions between the protein-epigallocatechin gallate (protein-EGCG) complex and nanocrystalline cellulose (NCC) were systematically investigated. Rheological properties, including large amplitude oscillation shear (LAOS), transient rheology, and conventional rheology of the mixture were also evaluated. As obtained, flexible myofibrillar protein-epigallocatechin gallate (MP-EGCG) and rigid ovalbumin-epigallocatechin gallate (Ova-EGCG) follow different rules in the stability of the regulatory system because of the difference in noncovalent interactions, triggering different rheological responses of the complexes. Addi-tionally, MP-EGCG/NCC showed an obvious strain overshoot during LAOS flow, which could not be obtained in Ova-EGCG/NCC. Notably, the fibrous MP-EGCG network was the factor that dominated the formation of a more stable suspension system with strong hydrogen bonding, dipole-dipole interactions and/or van der Waals forces. This study can provide some ideas for the future study of the interaction between protein-polyphenol complexes and polysaccharides.