molecular interactions, antioxidant effects and applications in model food systems
Rodrigo González Ortega (Author), Luka Šturm (Author), Mihaela Skrt (Author), Carla Di Mattia (Author), Paola Pittia (Author), Nataša Poklar Ulrih (Author)

Abstract

The influence of actively/passively encapsulated oleuropein on DPPC liposomes thermal and structural properties, and its antioxidant capacity against lipid peroxidation were investigated. Also, an oleuropein-rich olive leaf extract was encapsulated in soy phosphatidylcholine (PL-90 g) and incorporated in model and commercial drinks. Oleuropein induced a concentration-dependent broadening and splitting of the gel-to-liquid phase transition temperature. Fluorescence measurements revealed a fluidizing effect on liposomes below their gel-to-liquid phase transition temperature, and a higher lipid ordering above, especially to active encapsulation. Oleuropein also showed an antioxidant effect against lipid peroxidation in PL-90 g liposomes. PL-90 g Liposomes with olive leaf extract showed a mean diameter of 405 ± 4 nm and oleuropein encapsulation efficiency of 34% and delayed oleuropein degradation at pH 2.0 and 2.8 model drinks. In conclusion, greater effects were observed on the structure and fluidity of DPPC liposomes when oleuropein was actively encapsulated, while its incorporation into acidic foods in encapsulated form could enhance its stability.

Keywords

liposomi;enkapsulacija;oljka;Olea europaea;rastlinski ekstrakti;listi oljke;oleuropein;fosfolipidne membrane;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 577.3:634.63:615.014.6
COBISS: 33992195 Link will open in a new window
ISSN: 1557-1858
Views: 191
Downloads: 67
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Other data

Secondary language: Slovenian
Secondary keywords: liposomi;enkapsulacija;oljka;Olea europaea;rastlinski ekstrakti;listi oljke;oleuropein;fosfolipidne membrane;
Type (COBISS): Article
Pages: str. 84-97
Issue: ǂVol. ǂ16
Chronology: 2021
DOI: 10.1007/s11483-020-09650-y
ID: 14110143
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