Quantification of overall migration levels from poly (vinyl chloride) films: effects of gamma and electron beam radiation

Fábio Cerdeira Lírio; Mauro Carlos Lopes Souza; Valéria Barbosa Borges; Marta Maria Braga Baptista Soares Xavier

doi:10.18067/jbfs.v4i2.135

Quantification of overall migration levels from poly (vinyl chloride) films: effects of gamma and electron beam radiation

Fábio Cerdeira Lírio, Mauro Carlos Lopes Souza, Valéria Barbosa Borges, Marta Maria Braga Baptista Soares Xavier

Abstract

This study investigated the overall migration from Poly (vinyl chloride) (PVC) polymer films into food simulants, after gamma irradiation (⁶⁰Co) or electron beam radiation. PVC polymer films containing di-(2-ethylhexyl) adipate (DEHA) and epoxidized soybean oil were stored under controlled temperature (24 ± 1^oC) and moisture (50 ± 5 %) for 2 days. These films were supported on a stainless-steel plates and specimens were subjected to ionizing radiation treatment with gamma radiation from a ⁶⁰Co source (dose rate = 20 Gy/min) or electron beam radiation (dose rate = 120 Gy/min) at absorbed doses equal to 0, 10, 25 and 50 kGy. Overall packing migrants were evaluated on different food simulants (distilled water, 3 % w/v acetic acid and 10 % v/v ethanol) as a function of time (24, 48 and 72 hours). Results of overall migration levels showed that the treatment with radiation doses above 10 kGy promoted a significant increase of the overall packing migrants levels into all aqueous food simulants (p < 0.05). Overall migration levels were also enhanced with increasing exposure time to food simulants.

Keywords

PVC, Food Packaging, Gamma Radiation, Electron Beam, Food Simulant, Migration.

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DOI: http://dx.doi.org/10.18067/jbfs.v4i2.135