Analytical Chemistry, Nutrition & Food Sciences Department, University of Alicante, Alicante, Spain.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2009 Jun;26(6):938-46. doi: 10.1080/02652030802712681.
The migration behaviour of low molecular weight compounds from food packaging materials is one of the key issues in assessing the possibility of use in such applications. The aim of this work was to study the migration of carvacrol (1% and 2% w/w) when added to high-density polyethylene. All materials were exposed to the food simulants olive oil and distilled water separately at 40 degrees C and 25 degrees C. Three significant variables influencing the migration process were considered: incubation temperatures, the initial concentration of antioxidant, and the type of simulant (oil and aqueous). The amount of carvacrol migrating to olive oil was significantly higher than in water because of the higher solubility of this antioxidant in oil. Experimental results agreed reasonably well with those obtained by the application of a simple model derived from Fick's Second Law. Carvacrol could therefore be used in active packaging formulations as its release from the polymer matrix can be controlled.
低分子量化合物从食品包装材料中的迁移行为是评估其在这类应用中使用可能性的关键问题之一。本工作旨在研究百里香酚（1%和 2%w/w）添加到高密度聚乙烯中时的迁移行为。所有材料在 40°C 和 25°C 下分别用橄榄油和蒸馏水作为食品模拟物进行暴露。考虑了三个显著影响迁移过程的变量：孵育温度、抗氧化剂的初始浓度和模拟物的类型（油和水）。由于这种抗氧化剂在油中的溶解度更高，因此迁移到橄榄油中的百里香酚的量明显高于水中的量。实验结果与应用菲克第二定律得出的简单模型得到的结果相当吻合。因此，百里香酚可以用于活性包装配方中，因为可以控制其从聚合物基质中的释放。
