Improved antioxidant activity and oxidative stability of spray dried European eel (Anguilla anguilla) oil microcapsules: Effect of emulsification process and eel protein isolate concentration

International audience The objective of this study was to prepare European eel oil (EO) microcapsules using European eel protein isolate (EPI) as a wall material and investigate its oxidative stability. The EPI emulsions were obtained at different EO: EPI ratios (1:1, 1:2 and 1:4, w/w) and using two...

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Bibliographic Details
Published in:Materials Science and Engineering: C
Main Authors: Taktak, Wafa, Nasri, Rim, Lopez-Rubio, Amparo, Hamdi, Marwa, Gomez-Mascaraque, Laura, Ben amor, Nadia, Kabadou, Ahlem, Li, S.M., Nasri, Moncef, Karra-Chaâbouni, Maha
Other Authors: Faculté des Sciences de Sfax, Université de Sfax - University of Sfax, IATA, Novel Material and Nanotechnology Group, Spanish National Research Council (CSIC), Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2019
Subjects:
Oxidative stability
ATG
SEM
European eel protein isolate
Microencapsulation
Ultrasonication
[CHIM]Chemical Sciences
Anguilla anguilla
Online Access:https://hal.umontpellier.fr/hal-02321732
https://doi.org/10.1016/j.msec.2019.109867
Description
Summary:International audience The objective of this study was to prepare European eel oil (EO) microcapsules using European eel protein isolate (EPI) as a wall material and investigate its oxidative stability. The EPI emulsions were obtained at different EO: EPI ratios (1:1, 1:2 and 1:4, w/w) and using two emulsification procedures: Homogenization (H) and homogenization followed by ultrasonication (HU) treatments. The microcapsules prepared by combining the two emulsification processes (HU) and at core and wall ratio of was 1:4 presented the smallest particles size and the greatest encapsulation efficiency (68.50%) and oxidative stability. Scanning electron microscopy (SEM) images proved the spherical shape of all microcapsules without fissure on the surface. The capsules exhibited an interesting antioxidant activity depending on the EO:EPI ratio, especially for the metal chelating potential. Thus, the effect of ultrasonication process and the EPI concentration on the characteristic, the stability and the antioxidant activity of the encapsulated EO has been proved.

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