Release of alpha-tocopherol from antioxidative low density polyethylene film into fatty food simulant: Influence of complexation in beta-cyclodextrin

István Siró (1) , Éva Fenyvesi (2) , Lajos Szente (2) , Bruno de Meulenaer (3) , Frank Devlieghere (3) , Judit Orgoványi (4) , Judit Sényi (5) , József Barta (5)

1 Department of Preservation
2 Cyclodextrin Research and Development Laboratory Ltd.
3 Department of Food Safety and Food Quality
4 Faculty of Science, Department of Chemical Technology and Environmental Chemistry
5 Faculty of Food Science, Department of Preservation

The influence of complexation on the release of alpha-tocopherol from Low Density Polyethylene (LDPE) film was examined. Specific migration studies were performed at 7.0 ± 0.5°C using plastic bags filled with 95% ethanol as fatty food simulant. The amount of complexed and free (non-complexed) alpha-tocopherol migrated into the food simulant was followed by a high performance liquid chromatography system (HPLC). It was concluded that complexation in beta-cyclodextrin had a significant effect on the release rate of the antioxidant. Using a mathematical model for the description of the migration one order of magnitude decrease in diffusion coefficient (D) was calculated in case of complexed alpha-tocopherol compared to free form. Total migration of alpha-tocopherol from both films was observed meaning that the partition coefficient of tocopherol was not influenced by the incorporation in cyclodextrin. Thus, complexation might be the key to a long lasting antioxidative effect of such kind of active packaging.

Mots clés: Life Sciences

István Siró, Éva Fenyvesi, Lajos Szente, Bruno de Meulenaer, Frank Devlieghere, et al.. Release of alpha-tocopherol from antioxidative low density polyethylene film into fatty food simulant: Influence of complexation in beta-cyclodextrin. Food Additives and Contaminants, 2006, 23 (08), pp.845-853. ⟨10.1080/02652030600699064⟩. ⟨hal-00577478⟩