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In vitro simulated digestion experiments. (a) The release rate of β-carotene from the SA-PEC-WPI stabilized β-carotene emulsion. (b) The SEM images of SA-PEC-WPI stabilized β-carotene emulsion at different digestion times. SEM: scanning electron microscope; SGF: simulated grastric fluid; SIF: simulated intestinal fluid; SA: sodium alginate; PEC: pectin; WPI: whey protein isolate.
