Contribute to assessing the safe use of recycled paper materials in food packaging (Master thesis)

Φρύδα, Άννα

Paper and board is one of the most commonly used food packaging materials, because of its ease of use and its price. In recent years, recycled paperboard is used as packaging material in direct contact with foodstuff. Paper, because of its previous use it is exposed to numerous surrogates that are difficult to be removed in the recycling process. Therefore, the question arises as to whether it is safe to use the recycled cardboard as packaging material in direct contact with food. In this study, the interaction of a mixture of selected contaminants (nitrogen compounds) was studied with recycled cardboard with different characteristics as well their migration into a food simulant (Tenax). The contaminants used represent substances which may be present in recycled cardboards and which can be migrated to packaged food. Initially a rapid and simple method of identifying and quantifying the mixture of contaminants including ultrasonic extraction and GC/MS analysis was developed. The method was used to determine the mixture of contaminants in commercial samples of recycled cartons, in contaminated cardboard samples, and to study the migration of contaminants from the above packaging materials into Tenax (dry food simulant). Migration trials were conducted in both “mild” (10 days at 40 oC) and “extreme” (6 h at 70 oC) conditions. In case of commercial packaging materials, none of contaminants were found in the food simulant. In the case of contaminated cartons, of the contaminants studied, only two (2,4-dichloroaniline and 3,5-dichloroaniline) migrated to Tenax. However, the migration rated of these substances varied from moderate to very high. The rate of migration of the contaminants varies according to the nature of the substance, the nature and properties of the paperboard packaging, contact time and temperature. Based on the results of this study, it is estimated that recycled cardboard materials could be safely used as food packaging materials under conditions.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
Subject classification: Ανακύκλωση
Keywords: Συκευασία τροφίμων,Ανακύκλωση,Χαρτόνι συσκευασίας,Ασφάλεια χρήσης υλικών συσκευασίας,Recycling,Cardboard package,Safe use of packaging materials,Food packaging
Appears in Collections:Διατριβές Μεταπτυχιακής Έρευνας (Masters)

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