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Published on: August 9, 2022
Effects of peptides on stability of fat-soluble vitamins in octenylsuccinate starch microcapsules
Jiandong Li1, Xiang Liu2, Wenli Zhu2
1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
Abstract:
Octenylsuccinic anhydride modified starch is widely used as a wall material to encapsulate various nutrients in food industry. However, microcapsules prepared with such modified starch sometimes show poor storage stability. The objectives of this study were to enhance the stability of vitamin A acetate by incorporating peptides as additives in the microencapsulation systems and investigate how five different peptides affected the stability of vitamin A acetate. The peptides showed antioxidant properties and improved emulsion stability, which synergistically enhanced vitamin A acetate retention of 22 % at 60 °C over 4 weeks, while maintaining encapsulation efficiencies above 97 %. To test the feasibility in other applications, one of the peptides (rice peptide) was used to encapsulate cholecalciferol and achieved similar stability improvement, suggesting that the peptide has potential in enhancing the stability of other nutrients.
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