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Article Dans Une Revue Food Additives and Contaminants Année : 2011

Effect of ionizing radiation treatment on the specific migration characteristics of packaging - food simulant combinations: effect of type and dose of radiation

Panagiota Zygoura
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Evangelos Paleologos
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Michael Kontominas
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Résumé

Migration levels of acetyl tributyl citrate (ATBC) plasticizer from polyvinyl chloride (PVC) film into the EU specified aqueous food simulants (distilled water, 3% w/v acetic acid and 10% v/v ethanol) were monitored as a function of time. Migration testing was carried out at 40 oC for 10 days (EEC 1993). Determination of the analyte was performed by applying an analytical methodology based on surfactant (Triton X−114) mediated extraction prior to gas chromatographic-flame ionization detection. PVC cling film used was subjected to ionizing treatment with a [60Co] source, as well as to electron-beam irradiation at doses equal to 5, 15 and 25 kGy, with an aim to compare the effect of type and dose of radiation on PVC specific migration behaviour. Equilibrium concentrations of acetyl tributyl citrate into the aqueous solvents covered the ranges 173−422 μg L-1 and 296−513 μg L-1 for gamma and electron-irradiated PVC, respectively. Hence, e-beam irradiation resulted in significantly higher ATBC migration amounts compared to gamma treatment. The highest extraction efficiency of the 10% ethanol solution was common in both gamma and e-beam treatments; distilled water demonstrated the lowest migration. Gamma irradiation at intermediate doses up to 5 kGy produced no statistically significant (p>0.05) effect on ATBC migration into all three aqueous simulants; however, this does not apply for high-energy electrons. Both ionizing treatments were similar in that they resulted in statistically significant (p<0.05) differences in plasticizer migrating amounts between non-irradiated and irradiated at doses of 15 and 25 kGy samples. Gamma radiation did not affect the kinetics of plasticizer migration. On the contrary, electron-beam radiation produced shorter equilibration times for all food-simulating solvents tested at 40 oC.. Above values regarding ATBC migration into aqueous food simulants are far below the EU proposed upper limit of specific migration (5 mg kg-1¬) for both types of ionizing radiation. Thus, PVC cling film may be used in food irradiation applications in contact with aqueous foodstuffs.

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Dates et versions

hal-00677970 , version 1 (11-03-2012)

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Panagiota Zygoura, Evangelos Paleologos, Michael Kontominas. Effect of ionizing radiation treatment on the specific migration characteristics of packaging - food simulant combinations: effect of type and dose of radiation. Food Additives and Contaminants, 2011, pp.1. ⟨10.1080/19440049.2011.556671⟩. ⟨hal-00677970⟩

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