Development and characterization of bilayer films of FucoPol and chitosan

Ana R V Ferreira; Cristiana A V Torres; Filomena Freitas; Chantal Sevrin; Christian Grandfils; Maria A M Reis; Vítor D Alves; Isabel M Coelhoso

doi:10.1016/j.carbpol.2016.03.089

Development and characterization of bilayer films of FucoPol and chitosan

Carbohydr Polym. 2016 Aug 20:147:8-15. doi: 10.1016/j.carbpol.2016.03.089. Epub 2016 Mar 30.

Authors

Ana R V Ferreira¹, Cristiana A V Torres², Filomena Freitas³, Chantal Sevrin⁴, Christian Grandfils⁵, Maria A M Reis⁶, Vítor D Alves⁷, Isabel M Coelhoso⁸

Affiliations

¹ LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. Electronic address: [email protected].
² UCIBIO-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. Electronic address: [email protected].
³ UCIBIO-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. Electronic address: [email protected].
⁴ Interfacultary Research Centre of Biomaterials (CEIB), University of Liège, B-4000 Liège, Belgium. Electronic address: [email protected].
⁵ Interfacultary Research Centre of Biomaterials (CEIB), University of Liège, B-4000 Liège, Belgium. Electronic address: [email protected].
⁶ UCIBIO-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. Electronic address: [email protected].
⁷ LEAF-Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal. Electronic address: [email protected].
⁸ LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. Electronic address: [email protected].

PMID: 27178903
DOI: 10.1016/j.carbpol.2016.03.089

Abstract

Bilayer films of FucoPol and chitosan were prepared and characterized in terms of optical, morphologic, hygroscopic, mechanical and barrier properties, to evaluate their potential application in food packaging. Bilayer films have shown dense and homogeneous layers, and presented enhanced properties when comparing to monolayer FucoPol films. Though, a high swelling degree in contact with liquid water (263.3%) and a high water vapour permeability (0.75×10(-11)mol/msPa), typical of polysaccharide films, was still observed. However, they presented a low permeability to O2 and CO2 (0.47×10(-16)molm/m(2)sPa and 5.8×10(-16)molm/m(2)sPa, respectively). Tensile tests revealed a flexible and resistant film with an elongation at break of 38% and an elastic modulus of 137MPa. The studied properties, in particular the excellent barrier to gases, impart these bilayer films potential to be used in packaging of low moisture content products, as well as in multilayered hydrophobic/hydrophilic/hydrophobic barriers for food products with a broader range of water content.

Keywords: Bilayer films; Chitosan; Food packaging; FucoPol; Gas barrier; Polysaccharides.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Chitosan / chemistry*
Food Packaging / standards*
Permeability
Polysaccharides / chemistry
Tensile Strength
Water / chemistry

Substances

Polysaccharides
Water
Chitosan