Abstract
The development and evaluation of a phospholipid-sterol-protein membrane resembling system containing β-lactoglobulin (β-Lg) has been studied. Liposomes have been successfully employed for the protection, controlled release and site specific delivery of sensitive molecules, such as enzymes and vitamins. β-Lg (the major whey protein of ruminant species) was selected as model protein due to its ability to bind lipophilic molecules (i.e. phospholipids). Different techniques were used for the encapsulation studies (Differential Scanning Calorimetry, SDS polyacrylamide gel electrophoresis, Fourier Transform Infrared spectroscopy). Quantitation of encapsulation was estimated by Fluorescence spectroscopy. The stability study was carried out by turbidity measurements. The shape and size of the formulations prepared were assessed by Scanning Electron Microscopy and Dynamic Light Scattering. The developed system revealed a high encapsulation percentage of β-Lg, homogeneous and small shape and a very promising stability behavior. The characteristics obtained suggested that it is a very promising delivery system.
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Acknowledgments
This research has been co-financed by the European Union (European Social Fund - ESF) and Greek national funds through the Operational Program “Education and Lifelong Learning” of the National Strategic Reference Framework (NSRF) - Research Funding Program: Heracleitus II. Investing in knowledge society through the European Social Fund.
We are grateful to Prof. Philippos J. Pomonis for the availability of the Scanning Electronic Microscope at his laboratory, Dr. Dimitrios Fatouros for his help with the DLS and Dr. Michael Siskos for his help with FTIR data interpretation. We also thank Prof. Lindsay Sawyer for valuable scientific discussion and help with the English.
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The authors declare that they have no conflict of interest.
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Olga Gortzi and Magdalini Rovoli contributed equally to this work.
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Gortzi, O., Rovoli, M., Lalas, S. et al. Development and Evaluation of a Phospholipid-sterol-protein Membrane Resembling System. Food Biophysics 10, 300–308 (2015). https://doi.org/10.1007/s11483-015-9390-7
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DOI: https://doi.org/10.1007/s11483-015-9390-7