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Issue 95, 2015
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Characterization and bioaccessibility of β-carotene in re-assembled casein

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Abstract

The characterization and bioaccessibility of β-carotene (β-CE) in re-assembled casein (CN) were investigated in this study. At pH 4.6, β-CE in re-assembled CN significantly lowered the zeta-potential to a negative value compared to that of CN. The morphology of β-CE in re-assembled CN was characterized by atomic force microscopy. β-CE in re-assembled CN exhibited a more uniform and homogenous dispersion, with peak-to-valley differences of 6.8 nm rather than 91.3 nm for the pure β-CE. β-CE in re-assembled CN can effectively protect β-CE against degradation under conditions of heat and ultraviolet radiation. The antioxidant activity of β-CE when it was encapsulated in re-assembled CN was significantly higher than β-CE in control samples under both experimental conditions. The total release rate of β-CE was 76.7% and 63.4% by trypsin and pepsin hydrolysis, respectively. These results indicated a feasible application in the food industry.

Graphical abstract: Characterization and bioaccessibility of β-carotene in re-assembled casein

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Publication details

The article was received on 28 Apr 2015, accepted on 28 Aug 2015 and first published on 28 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA07736B
Citation: RSC Adv., 2015,5, 77595-77600
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    Characterization and bioaccessibility of β-carotene in re-assembled casein

    Y. Zhang, S. He, Y. Ma, W. Xu and H. Tang, RSC Adv., 2015, 5, 77595
    DOI: 10.1039/C5RA07736B

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