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This study aims to reveal the mechanism of the interaction between folic acid (FA) and egg ovalbumin (OVA) through the method of multi-spectroscopic, molecular docking, and molecular dynamics simulation in order to probe OVA as the possibility of a carrier of unstable vitamins. The results of the fluorescence spectra indicated a static quenching in the OVA-FA with a strong affinity of 6.998 × 104 M-1. At the same time, the complex formed by FA and OVA has changed the microenvironment. The measurement results of circular dichroism and particle size showed that FA and OVA gradually formed larger particles without changed the secondary structure of the protein. In addition, the results of molecular simulations indicated that the interaction between OVA and FA is mainly stabilized by strong hydrophobic and hydrogen bonds. This research was expanded the application prospect of dietary protein OVA as a transportation and protection system of vitamin substances. Copyright © 2022 Elsevier Ltd. All rights reserved.

Citation

Congnan Cen, Jian Chen, Weiqiang Wang, Jie Zhang, Xiangying Yang, Linglin Fu, Yanbo Wang. Exploring the interaction mechanism of dietary protein ovalbumin and folic acid: A combination research of molecular simulation technology and multispectroscopy. Food chemistry. 2022 Aug 15;385:132536

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PMID: 35278738

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