RT journal article
T1 Mass Transfer and Optical Properties of Active PET/PP Food-Grade Films Impregnated with Olive Leaf Extract
A1 Cejudo Bastante, Cristina
A1 Cran, Marlene J.
A1 Casas Cardoso, Lourdes
A1 Mantell Serrano, Casimiro
A1 Bigger, Stephen W.
A2 Ingeniería Química y Tecnología de Alimentos
K1 kinetic migration
K1 CIELAB parameters
K1 supercritical impregnation
K1 olive leaf extract
K1 UV barrier
K1 impregnation mode
AB A supercritical solvent impregnation (SSI) technique was employed to incorporate, by batch- and semicontinuous-modes, bioactive olive leaf extract (OLE) into a food-grade multilayer polyethylene terephthalate/polypropylene (PET/PP) film for active food packaging applications. The inclusion of OLE in the polymer surfaces significantly modified the colour properties of the film. A correlation of 87.06% between the CIELAB colour parameters and the amount of the OLE impregnated in the film was obtained which suggests that colour determination can be used as a rapid, non-destructive technique to estimate the OLE loading in the impregnated matrices. The UV barrier and water permeability properties of the films were not significantly modified by the incorporation of OLE. The migration of OLE into a 50% (v/v) ethanol food simulant demonstrated faster release of OLE from the PP surface than from the PET surface which may be due to the different interactions between OLE and each polymer.
PB MDPI
SN 2073-4360
YR 2022
FD 2022-01
LK http://hdl.handle.net/10498/26517
UL http://hdl.handle.net/10498/26517
LA eng
NO This research was funded by the Spanish Government (Project CTQ2014-52427-R) through its financing by the FEDER Funds (European Funds for Regional Development). The stage abroad of the author C.C.B. was supported by the Internal Research Plan of University of Cadiz, making this collaboration possible.
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026