Journal
FOOD HYDROCOLLOIDS
Volume 133, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2022.107983
Keywords
Casein; butyrylated dextrin nanoparticles; Chitosan; Bilayer emulsion; Interface
Categories
Funding
- Key Research and Development Program of Anhui Province [202004a06020044]
- Fundamental Research Funds for the Cornell University [PA2021K- CPY0054]
- National Natural Science Foundation of China [32160533]
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Bilayer emulsions stabilized by casein/butyrylated dextrin nanoparticles (CDNP) and chitosan (CS) were prepared using ultrasound-assisted homogenization. The emulsions showed excellent stability and had a unique interface structure. Optical microscopy results revealed that the emulsion droplets were evenly distributed and formed a network structure in the bilayer emulsions.
In the work, bilayer emulsions stabilized by casein/butyrylated dextrin nanoparticles (CDNP) and chitosan (CS) were prepared based on ultrasound-assisted homogenization. The effects of different homogeneous pressures and various CS concentrations on physical properties and microstructures of bilayer emulsions were investigated. The homogenization condition of 80 MPa was selected to prepare emulsions due to the fact that the emulsion showed the best stability under this condition. Compared with the monolayer emulsion, the bilayer emulsions showed excellent stability (storage, pH, and freeze-thaw cycle) due to the unique interface structure based on composite bilayer interface of CDNP and CS. Meanwhile, the results of optical microscopy, transmission electron microscopy, and confocal laser scanning microscopy showed that emulsion droplets evenly distributed and were crosslinked by CS chains to form a network structure in bilayer emulsions. These results would provide a new insight for the development of bilayer emulsions based on composite interface and bilayer interface.
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