Journal
FOOD CHEMISTRY
Volume 390, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.133198
Keywords
Fe2TiO5 nanoparticles; Alginate film; Composite film; Antioxidant active; Biocompatibility
Funding
- Ministry for Education, Science and Technological Development of the Republic of Serbia [451-03-9/2022-68/200053, 451-03-9/2022-68/200175]
- European Union [872662]
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Active packaging technology using Fe2TiO5 nanoparticles can extend the shelf life of food. The synthesized nanoparticles showed good biocompatibility and safety when incorporated into alginate film, and exhibited strong antioxidant efficiency.
An emerging technology of active packaging enables prolongation of food shelf life by limiting the oxygen transfer and the reactivity of free radicals, which both destruct food freshness. In this work, Fe2TiO5 nanoparticles were synthesized using a modified sol-gel method and evaluated as an enforcement of alginate food packaging film. Pure phase Fe2TiO5 nanoparticles had an average particle size of 44 nm and rhombohedral morphology. Fe2TiO5 nanoparticles induce no cell damage of human Caco-2 epithelial cells and show no inhibitory effect towards growth of a panel of bacterial strains, suggesting good biocompatibility. Films obtained by incorporation of Fe2TiO5 nanoparticles into alginate using the solvent casting method show no migration of iron or titanium ions from films to food simulants again suggesting their safety as a packaging material. Fe2TiO5 nanoparticles also showed strong antioxidant efficiency as determined using the DPPH. assay, and confirmed further in a preservation test on fresh fruit.
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