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Migration of a UV stabilizer from polyethylene terephthalate (PET) into food simulants

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The migration characteristics of the UV stabilizer Tinuvin 234 (2-(2H-benzotriazol-2-yl)-4,6-bis (1-methyl-1-phenylethyl)phenol) into food simulants has been measured from polyethylene terephthalate (PET) using HPLC with UV detection. Ethanol/water, isooctane and a fractionated coconut oil simulant (Miglyol®) were used as food simulating solvents. The migration characteristics were measured at temperatures in the range of 40-70°C. Diffusion coefficients were determined to be in the range of 1 × 10 −14 cm 2 s −1 to 1 × 10 −18 cm 2 s −1 . At 40°C, the amount of migration into 95% ethanol after 10 days was 2 g dm −2 . Isooctane is determined to be a good fatty food simulant that provides similar results for PET to those of fatty foods.
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Keywords: Migration; UV stabilizers; diffusion; food packaging; food simulants; polyethylene terephthalate

Document Type: Research Article

Publication date: October 1, 2004

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