Characterization of polylactic acid films for food packaging as affected by dielectric barrier discharge atmospheric plasma

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Title: Characterization of polylactic acid films for food packaging as affected by dielectric barrier discharge atmospheric plasma
Authors: Pankaj, Shashi Kishor | Bueno Ferrer, Carmen | Misra, N.N. | O'Neill, Luke | Jiménez, Alfonso | Bourke, Paula | Cullen, P.J.
Research Group/s: Análisis de Polímeros y Nanomateriales
Center, Department or Service: Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología
Keywords: Polylactic acid | DBD plasma | In-package | TGA | DSC | AFM | Oxygen permeability | Water vapor permeability | Overall migration
Knowledge Area: Química Analítica
Issue Date: Jan-2014
Publisher: Elsevier
Citation: Innovative Food Science & Emerging Technologies. 2014, 21: 107-113. doi:10.1016/j.ifset.2013.10.007
Abstract: Dielectric barrier discharge (DBD) air plasma is a novel technique for in-package decontamination of food, but it has not been yet applied to the packaging material. Characterization of commercial polylactic acid (PLA) films was done after in-package DBD plasma treatment at different voltages and treatment times to evaluate its suitability as food packaging material. DBD plasma increased the roughness of PLA film mainly at the site in contact with high voltage electrode at both the voltage levels of 70 and 80 kV. DBD plasma treatments did not induce any change in the glass transition temperature, but significant increase in the initial degradation temperature and maximum degradation temperature was observed. DBD plasma treatment did not adversely affect the oxygen and water vapor permeability of PLA. A very limited overall migration was observed in different food simulants and was much below the regulatory limits. Industrial relevance: In-package DBD plasma is a novel and innovative approach for the decontamination of foods with potential industrial application. This paper assesses the suitability of PLA as food packaging material for cold plasma treatment. It characterizes the effect of DBD plasma on the packaging material when used for in-package decontamination of food. The work described in this research offers a promising alternative to classical methods used in fruit and vegetable industries where in-package DBD plasma can serve as an effective decontamination process and avoids any post-process recontamination or hazards from the package itself.
ISSN: 1466-8564 (Print) | 1878-5522 (Online)
DOI: 10.1016/j.ifset.2013.10.007
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version:
Appears in Collections:INV - NANOBIOPOL - Artículos de Revistas

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