Publisher： John Wiley & Sons Inc
E-ISSN： 1099-1522|28|12|1039-1046
ISSN： 0894-3214
Source： PACKAGING TECHNOLOGY AND SCIENCE, Vol.28, Iss.12, 2015-12, pp. : 1039-1046
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Abstract
The presence and migration of non‐intentionally added substances in food packaging materials are the big concerns nowadays in terms of food safety, and the identification and quantitation are an important analytical challenge. Among non‐intentionally added substances, 1,4,7‐trioxacyclotridecane‐8,13‐dione, a by‐product resulting from the interaction between ingredients in many polyurethane adhesives, has been identified and quantified.Migration tests were carried out with food simulant E (Tenax®) and 3% acetic acid (simulant B) stored at 40°C/10 days using different adhesives and with different film thickness in the presence and absence of EVOH layer. After the exposure, Tenax® was extracted and analysed by gas chromatography with mass spectrometry. For 3% acetic acid, the analyses were directly performed by the Acquity® ultra‐performance liquid chromatography system coupled to triple quadrupole mass spectrometer detector.A possible degradation of the lactone after migration tests with 3% acetic acid occurred, and total degradation after 8 days was confirmed. Two compounds were detected and identified, which were also found in the migration extracts.Partition experiments were carried out from laminates composed by polypropylene film, adhesive and non‐treated polyethylene film at 40°C for 10 days. After this, the polypropylene/adhesive and polyethylene layers were independently extracted and analysed by gas chromatography with mass spectrometry. Diffusion studies were carried out following the Moisan procedure. The results and conclusions are shown and discussed.
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