Effect of Electron Beam and Gamma Radiation on the Migration of Piasticizers from Flexible Food Packaging Materials into Foods and Food Simulants

摘要

Migration tests were performed using a poly(vinyl chloride) (PVC) film containing di-(2-ethylhexyl)-adipate (DEHA), and a poly(vinylidenechloride-vinylchloride) (P(VDC/VC)) film containing acetyltributyl citrate (ATBC). The PVC-film was gamma-irradiated with 4 and 9 kGy doses while being in contact with either chicken meat samples or food simulant olive oil. Both PVC-and P(VDC/VC)-films were electron beam (EB)-irradiated with 20 and 50 kGy doses while in contact with only olive oil. At the doses studied, the low-dose gamma radiation had no effect on the migration of DEHA from PVC films into the chicken meat and the olive oil. However, the high-dose EB radiation increased migration of DEHA from PVC into the olive oil with the increased dose. In the case of ATBC migrating from P(VDC/VC), an overall migration was much lower than that of DEHA from PVC. Migration of ATBC into olive oil was not affected after 20 kGy and slightly increased after 50 kGy. The results are discussed in relation to EU upper limit for global migration and proposed upper limit for specific migration.