Chitosan Film with Citrus limonia Essential Oil: Physical and Morphological Properties and Antibacterial Activity
Nenhuma Miniatura disponível
Data
2020-06-01
Autores
Oliveira Filho, Josemar Goncalves de [UNESP]
Borges de Deus, Isabella Pelosi
Fernandes Valadares, Anna Carolina
Fernandes, Cassia Cristina
Borges Estevam, Elisangela Barbosa
Egea, Mariana Buranelo
Título da Revista
ISSN da Revista
Título de Volume
Editor
Mdpi
Resumo
The development of active packaging for food preservation is attracting increased attention due to serious environmental problems caused by synthetic and conventional materials. In the present study, the physical, chemical, optical, microstructural, and antibacterial properties of chitosan films withCitrus limoniaessential oil (CEO) were investigated. The incorporation >0.75% of CEO increased the thickness of the films. The incorporation >0.25% of CEO reduced the moisture content and the water vapor permeability of the chitosan films. The biodegradability of the films over ten days ranged from 55.46-62.65% and was not affected by the addition of CEO. All films showed good UV light barrier properties, and the incorporation of the CEO caused a decrease in the visible light transmission rate values. The addition of CEO changed the color of the bioactive films significantly, remain darker and yellowish. The bioactive films showed antibacterial activity againstStaphylococcus aureus, but not againstEscherichia coli. The films showed a heterogeneous microstructure with oil droplets retained in the continuous polysaccharide network. The results showed that chitosan films with CEO are promising as an active packaging material for food preservation.
Descrição
Palavras-chave
active packaging, lime, biofilm
Como citar
Colloids And Interfaces. Basel: Mdpi, v. 4, n. 2, 10 p., 2020.