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  • Essential oils-loaded elect...
    Ebrahimzadeh, Saba; Bari, Mahmoud Rezazadeh; Hamishehkar, Hamed; Kafil, Hossein Samadi; Lim, Loong-Tak

    Food science & technology, June 2021, 2021-06-00, Letnik: 144
    Journal Article

    Direct application of active and volatile compounds of essential oils (EOs) is ineffective in food and uncontrolled release of these compounds may be undesirable from sensory and antimicrobial efficacy standpoints. The present study aimed to develop and characterize the physical and antimicrobial properties of casting composite chitosan (CS) thin films laminated with electrospun nonwovens loaded with Zataria multiflora (ZEO) and cinnamon (CEO) targeting for active food packaging purposes. The composite structures were incorporated with various amounts of ZEO and CEO blend to enhance their antimicrobial and physical properties. There was no significant difference between antibacterial activity of the films containing EOs in both Gram-positive and Gram-negative bacteria (P˂0.05). All the films had antifungal activity against A.flavus. The highest antioxidant activity was found in the composite CS film (97.20%) in comparison to other films (P˂0.05). Morphological analysis of bilayer films revealed homogeneous bead-free electrospun nanofibers with diameters of less than 200 nm. The addition of 0.5 %v/v CEO significantly enhanced the elongation in comparison to CS film (P˂0.05). Our results demonstrated that the properties of bilayer films were influenced by the contents of EOs and these findings may pave a way for introducing new category of active packaging staffs. Display omitted •Bilayer films were produced by mixture of casting and electrospinning methods.•Laminate films containing 1 %v/v ZEO decreased the light transmittance.•Addition of 0.25 %v/v CEO enhanced the hydrophobicity of the films.•Bilayer films with nonwovens could be new approach for active food packaging.