Title: Development of a Method to Study the Migration of Six Photoinitiators into Powdered Milk
Citation: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY vol. 56 no. 8 p. 2722-2726
Publication Year: 2008
JRC N°: JRC45932
ISSN: 0021-8561
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC45932
DOI: 10.1021/jf703786e
Type: Articles in periodicals and books
Abstract: The aim of the present work was to develop a rapid multimethod for the analysis of six photoinitiators (PIs) in powdered milk and to study the migration of these PIs from LDPE packaging into powdered milk. The optimized HPLC-DAD method showed high correlation coefficients (>0.9999) over a concentration range of 0.1-10.9 mg/L. The kinetics of migration of the photoinitiators from LDPE packaging into powdered milk were determined at different temperatures. The key parameters of migration phenomena (diffusion and partition coefficients) were determined. The diffusion coefficients at 5 degrees C ranged between 8.4 x 10 (-12) (for ITX) and 5.1 x 10 (-10) (for benzophenone) and those at 40 degrees C between 5.9 x 10 (-10) (for ITX) and 6.1 x 10 (-9) (for Irgacure 184). The diffusion coefficients of the six model migrants under study increased with temperature and showed a good Arrhenius relationship between 5 and 40 degrees C.
JRC Directorate:Institute for Health and Consumer Protection Historical Collection

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