New insights into the microencapsulation properties of sodium caseinate and hydrolyzed casein |
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| Authors: | S. Drusch,Y. Serfert,A. Berger,M.Q. Shaikh,K. Rä tzke,V. Zaporojtchenko,K. Schwarz |
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| Affiliation: | 1. Department of Life Sciences and Technology, Beuth University of Applied Sciences, Luxemburger Str. 10, 13353 Berlin, Germany;2. Institute of Human Nutrition and Food Science, University of Kiel, Germany;3. Institute for Materials Science, Chair for Multicomponent Materials, University of Kiel, Germany |
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| Abstract: | The aim of the present study was to describe the fundamental physical characteristics of spray-dried carrier matrices based on sodium caseinate and casein hydrolyzate and microcapsules as well as their impact on the stability of a microencapsulated functional ingredient. Spray-dried carrier matrix was characterized by different physical methods (helium pycnometry, nitrogen displacement for surface area analysis, X-ray photoelectron spectroscopy, positron annihilation lifetime spectroscopy). Surface viscoelasticity of protein-stabilized oil–water interfaces was analyzed using dynamic pendant drop tensiometry. Fish oil was microencapsulated and microencapsulation efficiency as well as oxidative stability over time was monitored. |
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| Keywords: | Structure Stability Encapsulation Protein Lipid oxidation Fish oil |
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