Artículo
Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
Castillo, Luciana Andrea
; Farenzena, Sonia Andrea; Pintos, Esteban
; Rodriguez, Maria Susana; Villar, Marcelo Armando
; Garcia, Maria Alejandra; Lopez, Olivia Valeria
Fecha de publicación:
10/2017
Editorial:
Elsevier
Revista:
Food Packaging and Shelf Life
ISSN:
2214-2894
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Antimicrobial biodegradable films based on thermoplastic corn starch (TPS) and chitosan oligomers (CO) were obtained in order to develop a package prototype for perishable food products. Active films were fabricated thermo-compressing a sandwiched structure constituted by a thin layer of an oligomers enriched solution between two TPS films, previously made by melt-mixing and hot-pressing. Regarding enriched solution, it was obtained by dissolving oligomers in diluted acetic acid. Final material was characterized, determining its physical and optical properties, as well as, studying its microstructure. By diffusion assays it was demonstrated the capability of CO to migrate from the active film towards aqueous simulant media. Moreover, oligomers were able to diffuse from the matrix, regardless the aqueous medium acidity. Experimental data of diffusion assays were fitted using a mathematical , estimating diffusion coefficients at three studied pH values (3, 5, and 7). Active film was used to obtain sachets to package perishable foods such as strawberries, ricotta, and flavored breads, which were stored for 7 days under controlled conditions. Antimicrobial capacity of active sachets was corroborated through molds and yeast counts in the stored food products. Besides, it was demonstrated that CO incorporation to packaging material resulted more efficient to inhibit microbial development than the spraying technique.
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Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Castillo, Luciana Andrea; Farenzena, Sonia Andrea; Pintos, Esteban; Rodriguez, Maria Susana; Villar, Marcelo Armando; et al.; Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications; Elsevier; Food Packaging and Shelf Life; 14; 10-2017; 128-136
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