Migration of dioctyladipate plasticizer from food-grade WC film into chicken meat products: Effect of gamma-radiation

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1996 (EN)
Migration of dioctyladipate plasticizer from food-grade WC film into chicken meat products: Effect of gamma-radiation (EN)

Goulas, A. E. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Goulas, A. E. (EN)

Food-grade PVC film containing 28.3% dioctyladipate (DOA) plasticizer was used to wrap chicken meat samples, with and without skin, contained in a polystyrene tray. Samples were then irradiated with gamma-radiation [Co-60] at doses equal to 4 kGy and 9 kGy corresponding to ''cold pasteurization''. Irradiation was carried out at 8-10 degrees C and samples were subsequently stored at 4-5 degrees C. Contaminated chicken meat samples were analysed for DOA at intervals between 7 h and 240 h of contact, using an indirect GC method. Identical non-irradiated (control) samples were also analysed for their DOA content. Results showed no statistically significant differences in migrated amounts of DOA between irradiated and non-irradiated samples. Neither were differences observed between samples irradiated at 4 kGy and 9 kGy. This was supported by identical IR spectra recorded for irradiated and non-irradiated samples and leads to the conclusion that, at such intermediate radiation doses (less than or equal to kGy), the migration characteristics of PVC film are not affected. DOA migration was found to be time dependent, approaching equilibrium after approximately 170 h for the chicken flesh plus skin samples and 120 h for the chicken flesh samples. The amount of DOA migrated into chicken flesh plus skin samples was significantly greater (3.2-22.3 mg/dm(2)) than that for chicken flesh samples (0.9-8.9 mg/dm(2)). After 240 h of sample/ film contact under refrigeration, loss of DOA was approximately 35.6% for chicken flesh plus skin samples and 14.3% for chicken flesh samples. Sample spoilage, as demonstrated by off-odour development, occurred after approximately 120 h of refrigerated storage. Diffusion coefficients for DOA were calculated and were found to be lower for chicken flesh (1 x 10(-13)) than for flesh plus skin (4.4 x 10(-13)) samples. (EN)

plasticizer migration (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Zeitschrift Fur Lebensmittel-Untersuchung Und-Forschung (EN)



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