Lutein encapsulated in whey protein and citric acid potato starch ester: Construction and characterization of microcapsules
Zhao W. Zhang B. Liang W. Liu X. Zheng J. Ge X. Shen H. Lu Y. Zhang X. Sun Z. Ospankulova G. Li W.
1 November 2022Elsevier B.V.
International Journal of Biological Macromolecules
2022#2201 - 12 pp.
The poor water solubility and stability of lutein limit its application in industry. Microencapsulation technology is an excellent strategy to solve these problems. This study used citric acid esterified potato starch and whey protein as an emulsifier to prepare oil-in-water lutein emulsion, and microcapsules were constructed by spray drying technology. The effects of different component proportions on microcapsules microstructure, physical and chemical properties, and storage stability were analyzed. Citrate esterified potato starch had good emulsifying properties, and when compounded with whey protein, the encapsulation efficiency (EE) of microcapsules increased, and the embedding effect of lutein improved. After microencapsulation, the solubility of lutein increased significantly, reaching over 49.71 %, and gradually raised with more whey protein content. Furthermore, the high proportion of whey protein helped improve microcapsules EE and thermal properties, with the maximum EE reaching 89.36 %. The glass transition temperatures of microcapsules were all higher than room temperature, which indicated that they keep a stable state under general storage conditions. The experimental results of this study may provide a reference for applying lutein in food and other fields.
Lutein , Microcapsule , Physicochemical property
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Engineering Research Center of Grain and Oil Functionalized Processing in Universities of Shaanxi Province, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Shaanxi, Yangling, 712100, China
Kazakh Agrotechnical University, Zhenis avenue, 62, Nur-Sultan, 010011, Kazakhstan
Engineering Research Center of Grain and Oil Functionalized Processing in Universities of Shaanxi Province
Kazakh Agrotechnical University
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