Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9607
Title: Development of flexible antimicrobial zein coatings with essential oils for the inhibition of critical pathogens on the surface of whole fruits: Test of coatings on inoculated melons
Authors: Boyacı, Derya
Iorio, Gianmarco
Sözbilen, Gözde Seval
Alkan, Derya
Trabattoni, Silvia
Pucillo, Flavia
Yemenicioğlu, Ahmet
Boyacı, Derya
Sözbilen, Gözde Seval
Alkan, Derya
Yemenicioğlu, Ahmet
Izmir Institute of Technology. Food Engineering
Keywords: Antimicrobial packaging
Edible coating
Edible film
Essential oil
Melon
Zein
Issue Date: 2019
Publisher: Elsevier Ltd.
Abstract: This study aimed to develop essential oil (EO)-containing antimicrobial coatings for the inhibition of pathogenic bacteria contamination on fruit peels. Incorporation of eugenol (EUG), carvacrol (CAR), and thymol (THY) into films at > 1% (w/w) eliminated the typical brittleness of zein films. However, EUG outperformed CAR and THY in terms of mechanical properties. Films with >= 2% (w/w) CAR and THY and >= 3% EUG showed clear zones against L. innocua and E. coli in agar medium at 37 degrees C. All EO-containing films also inhibited L. innocua and E. coli inoculated at their surfaces by minimum 3.9 and 2.7 decimal (D) within 1 day at 10 degrees C. Moreover, 2% EUG-containing zein coatings caused 2-3 decimal reduction in L. innocua and E. coli counts of inoculated melon surfaces at 10 degrees C. Unlike the bare zein coatings, flexible EUG-containing films on melons did not show cracking or detachment. Zein films loaded with EUG showed a highly hydrophilic surface. The best oxygen barrier performance was observed for the EUG-richest formulation (i.e., EUG at 3%), and this was attributed to a homogenizing effect of the EO that eventually led to a denser and hole-free network. This work suggested that flexible coatings of zein containing EOs could inhibit pathogens embedded in the rough peel surface of melons.
Description: Sozbilen, Gozde Seval/0000-0003-3798-355X
WOS: 000477677300021
URI: https://doi.org/10.1016/j.fpsl.2019.100316
https://hdl.handle.net/11147/9607
ISSN: 2214-2894
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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