title: Migration of a UV stabilizer from polyethylene terephthalate (PET) into food simulants.
abstract: 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 degrees C. Diffusion coefficients were determined to be in the range of 1 x 10(-14) cm2 s(-1) to 1 x 10(-18) cm2 s(-1). At 40 degrees C, the amount of migration into 95% ethanol after 10 days was 2 microg dm(-2). Isooctane is determined to be a good fatty food simulant that provides similar results for PET to those of fatty foods.
authors.affiliation: Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park, MD 20740, USA. timothy.begley@cfsan.fda.gov
authors.forename: T H
authors.initials: TH
authors.lastname: Begley
authors.forename: J E
authors.initials: JE
authors.lastname: Biles
authors.forename: C
authors.initials: C
authors.lastname: Cunningham
authors.forename: O
authors.initials: O
authors.lastname: Piringer
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004058:Diffusion; D005506:Food Contamination / Q000032:analysis*; D018857:Food Packaging; D006801:Humans; D011093:Polyethylene Terephthalates / Q000737:chemistry*; D013696:Temperature; D014230:Triazoles / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D011093:Polyethylene Terephthalates; D014230:Triazoles; C016151:tinuvin