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Physico-chemical Properties of Marine Phospholipid Emulsions

  • Original Paper
  • Published:
Journal of the American Oil Chemists' Society

Abstract

Many studies have shown that marine phospholipids (PL) have better bioavailability, better resistance towards oxidation and contain higher polyunsaturated fatty acids such as eicosapentaenoic (EPA) and docosahexaenoic acids (DHA) than triglycerides (TAG) present in fish oil. The objective of this study was to investigate the emulsifying properties of various commercial marine PL and the feasibility of using them to prepare stable emulsions prepared with or without addition of fish oil. In addition, this study also investigated the relationship between chemical composition of marine PL and the stability of their emulsions. Physical stability was investigated through particle size distribution (PSD), zeta potential, microscopy inspection and emulsion separation (ES); while the oxidative and hydrolytic stability of emulsions were investigated through peroxide value (PV) and free fatty acids value (FFA) after 32 days storage at room temperature and at 2 °C. In conclusion, marine PL showed good emulsifying properties and it was possible to prepare marine PL emulsions with and without addition of fish oil. Emulsion with both good oxidative stability and physical stability could be prepared by using marine PL of high purity, less TAG, more PL, cholesterol and higher antioxidant content.

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Acknowledgments

The authors wish to thank Triple Nine (Esbjerg, Denmark), University of Tromsø (Tromsø, Norway) and PhosphoTech Laboratoires (Saint-Herblain Cedex, France) for free marine phospholipid samples. We also thank Maritex (Sortland, Norway) for fish oil sample. Furthermore, we owe our thanks to Roger Wepf and Falk Lucas from Electron Microscopy ETH (Zürich, Switzerland) for the help in microscopy analyses.

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Authors and Affiliations

  1. Division of Industrial Food Research, Lipid and Oxidation Group, National Food Institute, Technical University of Denmark, Søltofts Plads, Building 221, 2800, Kgs. Lyngby, Denmark

    F. S. H. Lu, N. S. Nielsen, C. P. Baron, L. H. S. Jensen & C. Jacobsen

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  1. F. S. H. Lu
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  2. N. S. Nielsen
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  3. C. P. Baron
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  4. L. H. S. Jensen
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  5. C. Jacobsen
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Correspondence to C. Jacobsen.

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Lu, F.S.H., Nielsen, N.S., Baron, C.P. et al. Physico-chemical Properties of Marine Phospholipid Emulsions. J Am Oil Chem Soc 89, 2011–2024 (2012). https://doi.org/10.1007/s11746-012-2105-z

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  • DOI: https://doi.org/10.1007/s11746-012-2105-z

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