Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications

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 oligomer...

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Autores principales: Castillo, Luciana A., Farenzena, Sonia, Pintos, Esteban, Rodríguez, María Susana, Villar, Marcelo A., García, María Alejandra, López, Olivia Valeria
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Química
active biodegradable films
thermoplastic corn starch
chitosan oligomer
diffusion assays
antimicrobial capacity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/107500
https://www.sciencedirect.com/science/article/abs/pii/S2214289417300662
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-107500
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
active biodegradable films
thermoplastic corn starch
chitosan oligomer
diffusion assays
antimicrobial capacity
spellingShingle Ciencias Exactas
Química
active biodegradable films
thermoplastic corn starch
chitosan oligomer
diffusion assays
antimicrobial capacity
Castillo, Luciana A.
Farenzena, Sonia
Pintos, Esteban
Rodríguez, María Susana
Villar, Marcelo A.
García, María Alejandra
López, Olivia Valeria
Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
topic_facet Ciencias Exactas
Química
active biodegradable films
thermoplastic corn starch
chitosan oligomer
diffusion assays
antimicrobial capacity
description 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 the 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 model, 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. Additionally, it was demonstrated that CO incorporation to the packaging material resulted in a more efficient way to inhibit microbial development than the spraying technique.
format Articulo
Articulo
author Castillo, Luciana A.
Farenzena, Sonia
Pintos, Esteban
Rodríguez, María Susana
Villar, Marcelo A.
García, María Alejandra
López, Olivia Valeria
author_facet Castillo, Luciana A.
Farenzena, Sonia
Pintos, Esteban
Rodríguez, María Susana
Villar, Marcelo A.
García, María Alejandra
López, Olivia Valeria
author_sort Castillo, Luciana A.
title Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
title_short Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
title_full Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
title_fullStr Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
title_full_unstemmed Active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
title_sort active films based on thermoplastic corn starch and chitosan oligomer for food packaging applications
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/107500
https://www.sciencedirect.com/science/article/abs/pii/S2214289417300662
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