Metal–Phenolic Network Covering on Zein Nanoparticles as a Regulator on the Oil/Water Interface
| Autor: | Di Wu, Qianchun Deng, Hongshan Liang, Bin Zhou, Mohamed Eid, Jin Gao, Yalei Dai, Yunan Huang |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Materials science Iron Zein Metal ions in aqueous solution Nanoparticle 01 natural sciences Contact angle Metal chemistry.chemical_compound Phenols Rheology Tannic acid Particle Size 010401 analytical chemistry Water General Chemistry Pickering emulsion 0104 chemical sciences Chemical engineering chemistry visual_art Emulsion visual_art.visual_art_medium Nanoparticles Emulsions General Agricultural and Biological Sciences Hydrophobic and Hydrophilic Interactions Oils Tannins 010606 plant biology & botany |
| Zdroj: | Journal of Agricultural and Food Chemistry. 68:8471-8482 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/acs.jafc.0c02632 |
| Popis: | Interfacial self-assembly has become a powerful force for regulating the amphipathy of Pickering emulsions on the oil/water interface. Herein, metal-phenolic supramolecular coatings, acting as a regulator on the oil/water interface, were fabricated on the surface of zein nanoparticles (NPs), as a consequence of which the prepared Pickering emulsions stabilized by the decorated zein NPs exhibited diverse properties, decided by different concentrations of zein, tannic acid (TA), and metal ions (Fe3+). Metal-phenolic network-decorated zein NPs named ZTFex NPs (ZTFe NPs represented zein/TA/Fe3+ NPs, and x represented different concentrations of compounds) exhibited increasing diameters of 100-110 nm. Three-phase contact angles also showed that the strong hydrophobicity of zein NPs could be decreased as a result of the formation of metal-phenolic networks. As for corresponding Pickering emulsions, the covering of TA-Fe3+ networks on zein NPs could enhance the stability of zein NP-based emulsion obviously, which might be due to the fact that ZTFex NPs revealed the ability to form strong films on the oil/water interfaces. ZTFe4 was selected as an optimal concentration because of its minimum size and excellent storage stability. Besides, it was also found that the diameter of ZTFe4-based emulsion enhanced with the increase in the oil phase. The rheological measurement results showed that both G' and G″ increased with the increase of x and the oil phase. In general, our paper not only highlighted a straightforward method for the interfacial nanofabrication of solid particles but also provided a novel and potential strategy in Pickering emulsion applications. |
| Databáze: | OpenAIRE |
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