期刊
FOOD HYDROCOLLOIDS
卷 112, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2020.106341
关键词
Starch/zein nanocomposite; Electrostatic interaction; Formation mechanism; pH-responsive; Polysaccharide protein interaction
资金
- National Natural Science Foundation of China [31771929]
- Natural Science Foundation of Guangdong Province [2019A1515012174]
- 111 Project [B17018]
- National International Science and Technology Cooperation Base for Tropical Health Food, China [2017D01005]
- Hong Kong Scholar Program [XJ2019049]
- Pearl River Talent Recruitment Program of Guangdong Province [2017GC010229]
Novel hydrophobic modified starch nanoparticles were successfully fabricated through nanoprecipitation and complexation with zein, forming starch/zein nanocomposites with a unimodal particle distribution, small mean diameter, and specific contact angle. Analysis indicated that electrostatic interaction and hydrogen bonding were the main mechanisms for the formation and maintenance of the nanocomposites, providing pH-responsive behavior for emulsion delivery.
Hydrophobic modified starch nanoparticles were fabricated through combined starch nanoprecipitation and complexation with zein, and their emulsifying behaviors were further evaluated as a Pickering emulsion stabilizer. Novel starch/zein nanocomposites with a unimodal particle distribution, mean diameter of 147.9 nm and contact angle of 83.0 degrees were achieved. Fourier transform-infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, differential scanning calorimetry, and confocal laser scanning microscopy demonstrated that the zein was successfully complexed with the starch molecules. Dissociation test confirmed that electrostatic interaction and hydrogen bonding were the main driving forces for the formation and maintenance of the starch/zein nanocomposites. Complexing with zein endowed the starch nanoparticles with emulsion pH-responsive behavior, which could provide a simple and green pathway to pH-responsive materials that afford controlled release of bioactive ingredients with emulsion delivery and recyclable catalysis of enzymatic reactions.
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