Migration of non volatile compounds from twenty six PP films used as food contact materials has been studied in four simulants (ethanol 95% and 10%, acetic acid
3% and Tenax ®) and analyzed by UPLC-MS/QTOF. Seventy six compounds
have been identified, where 76% of them were non-intentionally added
substances (NIAS) coming from degradation of additives used, such as
methyl or ethyl or hexyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) from
irganox 1076 and irganox 1010 degradation; or impurities such as
N,N-bis(2-hydroxyethyl) amines,
or compounds of unknown origin, like hydro-ceramides. The most common
compounds found were glyceryl monostearate or monopalmitate, erucamide,
irganox 1010, irgafos 168, irgafos 168 OXO, N,N-bis(2-hydroxyethyl)
tridecylamine and N,N-bis(2-hydroxyethyl) pentadecylamine.
Six
films didn’t comply with the European Regulation Nº 10/2011/EU, where
irganox 1010 and the group of N,N-bis(2-hydroxyethyl) amines exceeded
their SMLs. Other films surpassed the maximum concentration recommended
by Cramer for the compounds of class II (degradation products) or III
(amide compounds) when ethanol 95% was used as simulant.
