Migration of plastic packaging light stabilizers into food simulators : their reactivity in unsaturated fatty esters

Plastic packaging is usually stabilized against the effects of light by hindered amine light stabilizers (HALS : piperidine derivatives) and by UV absorbers (UVA), The amine stabilizers can react with oxygenated groups to form stable aminoxy radicals (NO°) that can be specifically detected by Electron Spin Resonance.