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Effect of chitosan-based coatings on the shelf life of Salmon (Salmo salar)
Souza, B. W. S.; Cerqueira, M. A.; Ruiz, Héctor A.; Martins, Joana; Casariego, A.; Teixeira, J. A.; Vicente, A. A.This study aimed at determining the effect of chitosan coating on shelf life extension of salmon (Salmo salar) fillets. The success of edible coatings depends highly on their effective wetting capacity of the surfaces on which they are applied. In this context in a first stage the surface properties of salmon fillets and the wetting capacity of the coatings on fish were evaluated. In terms of wettability there ...
Influence of electric fields on the structure of chitosan edible coatings
Souza, B. W. S.; Cerqueira, M. A.; Martins, Joana; Casariego, A.; Teixeira, J. A.; Vicente, A. A.The aim of this work was to evaluate the effect of electric fields applied at different field strength values on mechanical and thermal properties of chitosan films/coatings (obtained from lobster of the Cuban coasts). XRD analyses indicated that electrically treated chitosan films exhibited a more ordered structure and a clearly higher crystallinity when compared with non-treated films, thus displaying signifi...
Effect of moderate electric fields in the permeation properties of chitosan coa...
Souza, B. W. S.; Cerqueira, M. A.; Casariego, A.; Lima, A. M. P.; Teixeira, J. A.; Vicente, A. A.Edible films and coatings can provide additional protection for food, while being a fully biodegradable, environmentally friendly packaging system. Preliminary works have shown that the presence of a moderate electric field during the preparation of chitosan coating solutions may influence e.g. their transport properties. If such effect is confirmed, moderate electric fields could be used to tailor edible films...
Chitosan/clay films' properties as affected by biopolymer and clay micro/nanopa...
Casariego, A.; Souza, B. W. S.; Cerqueira, M. A.; Teixeira, J. A.; Cruz, L.; Díaz, R.; Vicente, A. A.Blends of chitosan (from Cuban lobster) and clay micro/nanoparticles were prepared by dispersion of the clay particles in the film matrix and the films obtained were characterized in terms of water solubility, water vapor, oxygen and carbon dioxide permeability, optical, mechanical and thermal properties using an Instron universal testing machine, differential scanning calorimetry, thermogravimetric analyses an...
Chitosan coating surface properties as affected by plasticizer, surfactant and ...
Casariego, A.; Souza, B. W. S.; Vicente, A. A.; Teixeira, J. A.; Cruz, L.; Díaz, R.The objectives of this work were to determine the effects of the concentrations of glycerol and sorbitol (as hydrophilic plasticizers), Tween 80 (as surfactant) and chitosan on the wettability of Cuban chitosan-based edible coatings in view of their application on tomato and carrot and to develop a model allowing the optimization of coating composition. The values of the polar and dispersive components of the s...
Chitosan coating surface and permeation properties as affected by plasticizer, ...
Casariego, A.; Souza, B. W. S.; Vicente, A. A.; Teixeira, J. A.; Cruz, L.; Díaz, R.Edible coatings can act as moisture, lipid, and gas barriers and can improve the textural properties of foods or serve as carriers of functional agents such as colors, flavors, antioxidants, nutrients and antimicrobials. The objectives of this work were to study the potentialities of chitosan (obtained from lobster of the cuban coasts) coating to extend the shelf life of fruits. To do so, the surface properties...
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