Enhanced lutein stability under UV-Light and high temperature by loading it into alginate-chitosan complex

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2022
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Xiao, Shulan
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© 2022 Published by Elsevier Ltd.
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Ahn, Dong
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Animal Science

The Department of Animal Science originally concerned itself with teaching the selection, breeding, feeding and care of livestock. Today it continues this study of the symbiotic relationship between animals and humans, with practical focuses on agribusiness, science, and animal management.

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The Department of Animal Husbandry was established in 1898. The name of the department was changed to the Department of Animal Science in 1962. The Department of Poultry Science was merged into the department in 1971.

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Lutein is one of the carotenoids found in various fruits, green leafy vegetables, and egg yolk. Lutein has multiple functions, including preventing age-related macular degeneration in the human body. However, lutein is susceptible to high temperature, light, and oxygen. The objective of this study was to produce lutein-loaded polysaccharide complexes to increase the stability of lutein. The physical and chemical properties of lutein-polysaccharide complexes were characterized. The entrapment efficiency (EE%) and loading capacity (LC%) of ltuein, and the lutein's stability to high temperatures and UV light were tested. The results showed that the lutein-loaded complexes had greater than 98% entrapment efficiency and 35% loading capacity. The AL/CS complexes showed significantly higher thermal (70 °C, 3 h) and UV-light stabilities than the free lutein. The SEM, FTIR, and XRD results suggested that the lutein-loaded AL/CS complexes had a flake-like structure, and lutein was inserted into the AL/CS complexes as amorphous forms. The main forces that incorporated and stabilized lutein inside the AL/CS complexes were the hydrophobic environments caused by the neutralization of net charge on the alginate and chitosan and the intermolecular hydrogen bonds between lutein, alginate, and chitosan.
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This article is published as Xiao, Shulan, and Dong Uk Ahn. "Enhanced lutein stability under UV-Light and high temperature by loading it into alginate-chitosan complex." LWT 164 (2022): 113663. doi:10.1016/j.lwt.2022.113663. Posted with permission. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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