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

• 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

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.