ArticleFoods (Basel, Switzerland)2025
Rapid Covalent Bonding of Walnut Protein Isolates to EGCG: Unveiling the Ultrasound-Assisted Ratio Optimization, Binding Mechanism, and Structural-Functional Transformations.
Article in Foods (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Research Progress on Protein-Polyphenol Interaction Mechanisms and Structure-Activity Relationship Modified by Physical Fields.Foods (Basel, Switzerland) · 2026Review
- Ultrasound-Assisted Covalent Conjugation of Walnut Albumin with Bound Polyphenols: Structural Modulation and Functional Enhancement.Foods (Basel, Switzerland) · 2026Article
- Preparation, characterization, and application of camellianin A/soy protein isolate covalent complexes.Frontiers in nutrition · 2025Article
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Authors and funding
7 authors.
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Abstract
The application of walnut protein isolate (WPI) and polyphenols is usually limited by low solubility. To solve the above problem, the impact of the alkaline treatment method and the ultrasound-assisted alkaline treatment method on the structural and functional properties of protein-polyphenol covalent complexes (WPI-(-)-epigallocatechin-3-gallate (EGCG), UWPI-EGCG, respectively) was explored. Fourier transform infrared spectroscopy and fluorescence spectroscopy indicated that the covalent binding of EGCG to WPI altered the secondary and tertiary structures of the protein and increased its random coil content. In addition, the UWPI-EGCG samples had the lowest particle size (153.67 nm), the largest absolute zeta potential value (25.4 mV), and the highest polyphenol binding (53.37 ± 0.33 mg/g protein). Meanwhile, WPI-EGCG covalent complexes also possessed excellent solubility and emulsification properties. These findings provide a promising approach for WPI in applications such as functional foods.
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