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http://dx.doi.org/10.9721/KJFST.2018.50.3.324

Influence of antioxidants on β-carotene degradation in nanoemulsions  

Park, Jun-Kyu (Department of Food Science and Biotechnology, Kyonggi University)
Kwon, Yun-Joong (Department of Food Science and Biotechnology, Kyonggi University)
Publication Information
Korean Journal of Food Science and Technology / v.50, no.3, 2018 , pp. 324-330 More about this Journal
Abstract
In this study, we examined the effects of carrier oil type (MCT oil: MO, corn oil: CO, palm oil: PO), pH of dispersion solution, and antioxidants on the chemical degradation of ${\beta}$-carotene in oil-in-water nanoemulsions. The pH of the emulsion had a significant influence on the stability of ${\beta}$-carotene, which showed rapid degradation in emulsions at low pH value and relatively higher stability at high pH values. The influence of the carrier oil type on ${\beta}$-carotene stability was assessed. The rate of ${\beta}$-carotene degradation increased in the following order: CO > PO > MO. The effect of antioxidants on ${\beta}$-carotene degradation was monitored during storage at $25^{\circ}C$ for 4 weeks. The rate of ${\beta}$-carotene degradation decreased upon addition of water-soluble (ascorbic acid) or oil-soluble (tocopherol) antioxidants. In general, tocopherol was more effective than ascorbic acid in reducing ${\beta}$-carotene degradation. To utilize this nanoemulsion for producing acidic beverages, adding a higher concentration of antioxidants is required.
Keywords
nanoemulsions; ${\beta}$-carotene; degradation; antioxidant;
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