Antibacterial activity, optical, mechanical, and barrier properties of corn starch films containing orange essential oil

•The orange essential oil has activity against S. aureus and L. monocytogenes.•Starch films with orange essential oil have activity against L. monocytogenes.•Starch films incorporated with orange essential oil have activity against S. aureus.•Starch films with orange essential oil have potential for...

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Bibliographic Details
Published in:Carbohydrate polymers 2019-10, Vol.222, p.114981-114981, Article 114981
Main Authors: do Evangelho, Jarine Amaral, da Silva Dannenberg, Guilherme, Biduski, Barbara, el Halal, Shanise Lisie Mello, Kringel, Dianini Hüttner, Gularte, Marcia Arocha, Fiorentini, Angela Maria, da Rosa Zavareze, Elessandra
Format: Article
Language:English
Subjects:
Antibacterial activity
Mechanical properties
Orange essential oil
Starch films
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Summary:•The orange essential oil has activity against S. aureus and L. monocytogenes.•Starch films with orange essential oil have activity against L. monocytogenes.•Starch films incorporated with orange essential oil have activity against S. aureus.•Starch films with orange essential oil have potential for use as bioactive films.•Orange essential oil increased the moisture, water solubility, and PWV of the films. The incorporation of antimicrobial compounds into natural polymers can promote increased shelf life and ensure food safety. The aim of this study was to evaluate the antibacterial activity, morphological, optical, mechanical, and barrier properties of corn starch films containing orange (Citrus sinensis var. Valencia) essential oil (OEO). The corn starch films were prepared using the casting method. OEO and the corn starch films incorporated with OEO showed higher antibacterial activity against Staphylococcus aureus and Listeria monocytogenes. The addition of OEO to the films increased the morphological heterogeneity and contributed to the reduction of the tensile strength and elongation of the films, and it increased the moisture content, water solubility, and water vapor permeability. The water vapor permeability and partial or total solubility of a film in water prior to consumption of a product are of interest when the film is used as food coating or for encapsulation of specific molecules.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2019.114981