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Core-shell pea protein-carboxymethylated corn fiber gum composite nanoparticles as delivery vehicles for curcumin
Yue Wei1, Zhixiang Cai1, Min Wu1
1Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, China.
Abstract:
Nanocomposites from plant-derived polysaccharides and proteins are green and sustainable materials that can be applied in various food and biomedical fields. In this work, we developed a novel core-shell nanocomposite from carboxymethylated corn fiber gum (CMCFG) and high nutritious pea protein (PP) for curcumin (Cur) delivery. In the preparation, PP-Cur complexes (PP-Cur) were formed at pH 7.0 and then coated by CMCFG via hydrophobic interactions to form PP-Cur-CMCFG complexes. Furthermore, the interactions between CMCFG and PP-Cur in the complexes were enhanced at pH 3.5 by electrostatic interactions. The resulting nanocomposite exhibited an excellent encapsulation performance for Cur with high Cur loading efficiency, good water dispersibility, and high chemical and thermal stability. Besides, the Cur-loaded core-shell nanocomposite also showed higher antioxidant and radical scavenging activities than Cur. Our results provide support for the use of plant-derived delivery systems as a strategy for the delivery of chemically unstable hydrophobic Cur.
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