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

• Published in: Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment Chemistry, analysis, control, exposure & risk assessment, 2011-05, Vol.28 (5), p.686-694
• Main Authors: Zygoura, P.D., Paleologos, E.K., Kontominas, M.G.
• Format: Article
• Language: English
• Subjects: Acetic Acid - chemistry; aqueous food simulants; ATBC; Biological and medical sciences; Chromatography; Citrates - analysis; Citrates - chemistry; Cobalt Radioisotopes; Diffusion; Electrons; Ethanol - chemistry; European Union; Flame Ionization; Food contamination & poisoning; Food Contamination - legislation & jurisprudence; Food industries; Food Irradiation - adverse effects; Food Irradiation - standards; Food packaging; Food Packaging - standards; Fundamental and applied biological sciences. Psychology; Gamma Rays; gas chromatography; General aspects; Handling, storage, packaging, transport; Humans; ionising radiation; Ions; Kinetics; Legislation, Food; Limit of Detection; migration; Plasticizers - analysis; Plasticizers - chemistry; Polyvinyl chloride; Polyvinyl Chloride - chemistry; Polyvinyl Chloride - radiation effects; PVC; Radiation; Radiation Dosage; Solubility; Solvents; Water - chemistry
• ISSN: 1944-0049; 1944-0057
• DOI: 10.1080/19440049.2011.556671

Migration levels of acetyl tributyl citrate (ATBC) plasticiser from polyvinyl chloride (PVC) film into the European Union 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°C for 10 days. Determination of the analyte was performed by applying an analytical methodology based on surfactant (Triton X-114) mediated extraction prior to gas chromatographic-flame ionisation detection. PVC cling film used was subjected to ionising treatment with a [ 60 Co] source, as well as to electron-beam irradiation at doses equal to 5, 15 and 25 kGy, with the aim to compare the effect of type and dose of radiation on the specific migration behaviour of PVC. 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 compared with 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 ionising treatments were similar in that they resulted in statistically significant (p