Project SafeFoodPack Design: case study on indirect migration from paper and boards
2017
Nguyen, Phuong Mai | Julien, Jean Mario | Breysse, Colette | Lyathaud, Cédric | Thébault, Jacques | Vitrac, Olivier | Ingénierie, Procédés, Aliments (GENIAL) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | Laboratoire National de Métrologie et d'Essais (LNE) | 3S'inPACK
Migration due to indirect contact with packaging caused several major sanitary crises, including the spread contamination of dry food by mineral oils and printing ink constituents from cardboard. The issues are still not fully resolved because the mechanisms have been insufficiently described and the relationship between design, contamination level, type of contaminant, and conditions of storage (time and temperature) are poorly understood. This study proposes a forensic analysis of these phenomena when food is separated from cardboard by a plastic layer. Practical relationships and advanced simulation scenarios were devised and validated against the long-term migration between 20 and 60°C of 15 substances. They were chosen to be representative of the main contaminants of cardboard: aliphatic and aromatic mineral oils, photo-initiators and plasticisers. Data were summarised as iso-contamination curves and iso-contamination times up to 2 years. Simple rules are illustrated to extrapolate the results to arbitrary conditions in order to identify critical substances and to estimate the plastic film’s thickness to keep the contamination within acceptable limits. Recommendations for the risk management of contamination routes without contact are finally drafted.
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