期刊
FOOD HYDROCOLLOIDS
卷 118, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2021.106742
关键词
High internal phase emulsion; Cross-linking; Ultrasonication; Centrifugation; Controlled delivery
资金
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [18KJB550008]
A controllable approach to produce polysaccharide-based high internal phase emulsions (HIPEs) without surfactants was explored, by using centrifugation of ultrasonication-produced shell cross-linked polysaccharide microspheres. The resulting HIPEs exhibited high stability, encapsulation efficiency, and pH/redox dual stimuli-responsive release. Further development of this strategy could lead to tunable HIPEs with desired functionalities for smart delivery and oral adsorption of hydrophobic food active ingredients.
We have explored a controllable approach to produce polysaccharide-based high internal phase emulsions (HIPEs) without the use of any surfactants, synthetic particles, or synthesis of Pickering emulsions. This strategy required only the centrifugation of ultrasonication-produced shell cross-linked polysaccharide microspheres, and simultaneously provided facile control over the properties of HIPEs. By this means, the strong viscoelastic HIPEs with high oil volume fraction (up to 85.6%) can be stabilized solely by 0.5 wt% polysaccharide. We can further strengthen the HIPEs by generating an additional complex shell through the electrostatic deposition of non-crosslinked polysaccharides back on the cross-linked microsphere surface. Using ?-carotene as a model hydrophobic bioactive, these HIPEs stabilized by cross-linking/electrostatic deposition of polysaccharides featured high encapsulation efficiency, oxidation stability, and pH/redox dual stimuli-responsive release. Further development of this strategy could exhibit a great potential to construct tunable HIPEs with desired functionalities for smart delivery and oral adsorption of hydrophobic food active ingredients.
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