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Identification and Migration Studies of Photolytic Decomposition Products of UV-Photoinitiators in Food Packaging
Open AccessArticle

Migration Studies of Two Common Components of UV-curing Inks into Food Simulants

1
Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Pharmacy, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
2
National Food Center, Spanish Agency of Food Safety and Nutrition, E-28220 Majadahonda, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Roland Franz and Frank Welle
Molecules 2019, 24(19), 3607; https://doi.org/10.3390/molecules24193607
Received: 30 July 2019 / Revised: 25 September 2019 / Accepted: 4 October 2019 / Published: 7 October 2019
(This article belongs to the Special Issue Food Packaging Materials)
The Rapid Alert System for Food and Feed (RASFF) has reported many cases of different UV curing inks components in foodstuffs during the last few years. These contaminants reach foodstuffs mainly by set-off, their principal migration mechanism from the package. Under this premise, this work has tried to characterize the process of migration of two common UV ink components: a photoinitiator (4-Methylbenzophenone) and a coinitiator (Ethyl-4-(dimethylamino) benzoate), from the most common plastic material used in food packaging low-density polyethylene (LDPE) into six different food simulants. The migration kinetics tests were performed at four different common storage temperatures, obtaining the key migration parameters for both molecules: the coefficients of diffusion and partition. The migration process was highly dependent on the storage conditions, the photoinitiator properties and the pH of the foodstuff. View Full-Text
Keywords: migration; 4-methylbenzophenone; ethyl-4-(dimethylamino) benzoate; diffusion coefficient; partition coefficient migration; 4-methylbenzophenone; ethyl-4-(dimethylamino) benzoate; diffusion coefficient; partition coefficient
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MDPI and ACS Style

Lago, M.A.; Sendón, R.; Bustos, J.; Nieto, M.T.; Paseiro Losada, P.; Rodríguez-Bernaldo de Quirós, A. Migration Studies of Two Common Components of UV-curing Inks into Food Simulants. Molecules 2019, 24, 3607.

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