Title: Study of the Migration of Photoinitiators Used in Printed Food-Packaging Materials into Food Simulants
Authors: SANCHEZ SILVA A.ANDRE CatarinaCASTANHEIRA IsabelCRUZ J.m.PASTORELLI SarahSIMONEAU CatherinePASEIRO-LOSADA P.
Citation: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY vol. 57 p. 9516-9523
Publisher: AMER CHEMICAL SOC
Publication Year: 2009
JRC N°: JRC55772
ISSN: 0021-8561
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC55772
DOI: 10.1021/jf8035758
Type: Articles in periodicals and books
Abstract: Photoinitiators (PIs) are used as catalyzers for inks and lacquers that are cured with ultraviolet (UV) light, and they can contaminate foodstuffs by mass transference.The aim of the present paper is to study the migration of six photoinitiators (Irgacure 184, benzophenone, Irgacure 651, Irgacure 907, ITX, and EHA) into food simulants [distilled water, 3% acetic acid (w/v) in aqueous solution, 10, 20, 30, 60 and 95% ethanol (v/v) in aqueous solution]. Migration levels of the six PIs into different food simulants were compared after a 30 day contact period with the additivated plastic. A relationship between R (ratio between log Ko/w and MW) and total migration was found for PIs with log Ko/w < 5. Key parameters of migration processes were calculated according to a mathematical model based on Fick¿s second law. Diffusion (D) and partition coefficients were estimated and compared among different simulants, temperatures, and PIs to understand better the mechanisms of the migration process and the physicochemical properties that most influence this phenomenon. For instance, at 5 C, in ethanol 95% (v/v), D ranged between 4.2 10-11 cm/s for Irgacure 907 and 3.0 10-9 cm/s for benzophenone.
JRC Directorate:Institute for Health and Consumer Protection Historical Collection

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