Modélisation du coefficient de partage moléculaire dans les systèmes aliment-emballage

Abstract : Knowledge about interactions between foodstuffs and packaging material is of importance for development of new packaging systems. Migration of residual printing ink solvents from packages to the wrapped food can cause off-flavours in food and deteriorate quality of end products. ln addition, loss of aroma can result either from degradation of the aroma compounds, or absbrption into the packaging material. The aims of this study were the determination of partition coefficient of migrant in food simulantlpolymer system and developing a mathematical model in this system. The partition coefficients of migrants were determined by the Phase Ratio Variation method (pRV method) using a headspace-GC in food simulantlair system. By developing a new method, we calculated partition coefficients of migrants between food simulants/polymers. Mathematical predictive models were developed to predict the partition coefficient in octanol/water and food simulantlpolymer systems. The two types of descriptors used in these models were constitutional and quantum chemical descriptors. The results showed that the main physico-chemical properties of migrant, food and packaging influencing the partition coefficient were molecular weight, polarity, HLB and LUMO energy.
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http://docnum.univ-lorraine.fr/prive/INPL_T_2005_ARAB_TEHRANY_E.pdf
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Submitted on : Thursday, March 29, 2018 - 12:34:55 PM
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Elmira Arab Tehrany. Modélisation du coefficient de partage moléculaire dans les systèmes aliment-emballage. Sciences agricoles. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL017N⟩. ⟨tel-01749973⟩

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