Occurrence and migration of synthetic phenolic antioxidants in food packaging materials: Effects of plastic types and storage temperature.
Level 5 - mechanism / opinion, no new human data
Level 5 by design analogy (in vitro laboratory chemical analysis and migration testing, no human data)
PubMed 39824100 · doi:10.1016/j.scitotenv.2025.178459
What was done
Authors measured concentrations of ten high molecular weight synthetic phenolic antioxidants (HMW SPAs) across 116 plastic food packaging samples across six plastic categories (including polypropylene, polyethylene, and polyethylene terephthalate). They conducted migration tests measuring chemical transfer into food simulants (including 95% ethanol for fatty food simulation) across three temperatures: 4 °C, 25 °C, and 60 °C.
What was found
Total concentrations of HMW SPAs ranged from 0.0844 to 894 mg/kg (geometric mean: 71.7 mg/kg). AO1010 was detected in 100% of samples and comprised 71.8% of total HMW SPAs, followed by AO1076 (21.4%) and AO3114 (3.14%), with highest concentrations found in PP, PE, and PET. Migration into fatty food simulants increased with temperature. For AO1076, maximum migration in 95% ethanol reached 7.05 mg/kg for PE at 25 °C, 9.79 mg/kg for PET at 25 °C, and 10.8 mg/kg for PET at 60 °C, exceeding national specific migration limits.
Why it matters
This study documents the presence and temperature-dependent migration of large phenolic antioxidant additives from common food packaging plastics into fatty food simulants at levels exceeding safety limits.
Limits
The study tested laboratory food simulants rather than real complex food items, and it did not assess human dietary exposure, bioavailability, or in vivo toxicity.
Cited by
- supports Heating food or liquids in plastic results in greater chemical exposure than merely storing them in plastic.