Journal
FOOD HYDROCOLLOIDS
Volume 89, Issue -, Pages 80-89Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2018.10.032
Keywords
beta-carotene; Wheat gluten nanoparticle; Xanthan gum; Pickering emulsions; Degradation
Categories
Funding
- National Natural Science Foundation of China [31860452, 31601468]
- Major Discipline Academic, Technical Leader Training Plan Project of Jiangxi Province [20162BCB22009]
- Key Project of Natural Science Foundation of Jiangxi Province, China [20171ACB20005]
- Research Program of State Key Laboratory of Food Science and Technology of Nanchang University [SKLF-ZZA-201608]
- Open Project Program of State Key Laboratory of Food Science and Technology, Nanchang University [SKLF-ZZB-201717]
- Postgraduate Innovation Fund of Nanchang University [cx2018113]
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beta-carotene was encapsulated in Pickering emulsions stabilized by biopolymer particles formed by wheat gluten nanoparticles (WGN) or wheat gluten nanoparticle-xanthan gum (WGN-XG) complexes. The WGN-XG emulsions had larger initial mean particle diameters (23.9 mu m) than the WGN ones (9.4 mu m), but they were still stable to aggregation over a wide range of pH values (4-8) and salt levels (0-1000 mM NaCl). They were also effective at protecting beta-carotene from chemical degradation during storage, with around 94.3% and 70.1% of the carotenoids being retained after one-month storage at 25 and 37 degrees C, respectively. WGN-XG and WGN emulsions were both stable to thermal sterilization. An in vitro digestion experiment showed that beta-carotene had a higher bioaccessibility in the WGN-XG emulsions than in the WGN ones. These results may facilitate the design of Pickering emulsions with high stability for nutraceutical delivery in food and supplement products.
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