Journal
FOOD HYDROCOLLOIDS
Volume 77, Issue -, Pages 187-203Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2017.09.034
Keywords
beta-Carotene; Lipid-based microcapsules; Absorption; Digestion model; Composition; Bioaccessibility
Categories
Funding
- National Natural Science Foundation of China [31401533, 31571891]
- National Key R&D Program of China [2016YFD0400801]
- National 125 Program [2013AA102207]
- program of Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
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beta-Carotene is considered as a promising functional food ingredient. However, the application of beta-carotene is limited by its low solubility in water, sensitivity to oxygen, light and temperature, and low oral bioavailability. Lipid-based microcapsules can be used as delivery systems to improve the bioavailability of beta-carotene in addition to encapsulation and protection. This review begins by summarizing the absorption of beta-carotene in lipid-based microcapsules and in vitro digestion models used in the study of beta-carotene bioaccessibility. It then puts the special emphasis on the effects and potential mechanisms of simulated digestive conditions (e.g. digestive enzymes, surface-active components, mineral ions, pH, mucin, flow profiles and mechanical forces), the composition (e.g. beta-carotene, oil phase, interfacial layer and gel matrix), structure (e.g. particle size, particle charge) and physical state of lipid-based microcapsules on the bioaccessibility of beta-carotene during in vitro digestion. The studies presented in this review show that both the simulated digestive conditions and the characteristics (composition and structure) of lipid-based microcapsules affect the beta-carotene bioaccessibility by impacting the structure stability of delivery systems, digestion of lipid and the transfer of beta-carotene to mixed micelles. It can be concluded that appropriate digestive parameters should be chosen depending on the nature of the sample being tested, and that the bioaccessibility of beta-carotene can be regulated by rational selection of the composition and structure fabrication of microcapsules. Such information can be used for the design of digestion models and development of beta-carotene supplements with high bioavailability. (C) 2017 Elsevier Ltd. All rights reserved.
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