Official Food Control Authority of the Canton of Zurich, Switzerland.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2009 Jul;26(7):1113-22. doi: 10.1080/02652030902894405.
As shown previously, the conventional testing procedure for simulating long-term migration from the gaskets of metal closures into oily foods does not adequately reflect reality. It appears to be impossible to accelerate migration to the extent that the situation at the end of the shelf life of a product can be anticipated in a few days or weeks. Therefore, we investigated whether long-term migration could be extrapolated from migration rates determined for new lids. Jars were kept in the normal upright position. Since heat treatment may have a strong temporary impact, migration during the initial heating for pasteurization or sterilization and storage at ambient temperature were determined using different lids. Commercial products were recalled from sales points throughout Europe to determine the real migration over extended periods of time and for jars with differing histories. This migration was compared with data from the short-term testing to investigate whether an empirical relationship could be derived. The results show that the short-term test enables the comparison of lids and plasticizers in the initial phase of migration, but that long-term extrapolation presupposes more complex kinetic modeling. The results also demonstrate that the legal relevance of "official" testing methods should be reconsidered to avoid conflict when food contact materials comply with migration limits in the test but not in actual application.
如前所述，模拟金属密封件中长期迁移到油性食品中的传统测试程序不能充分反映实际情况。似乎不可能加速迁移，以至于在几天或几周内就能预测到产品保质期结束时的情况。因此，我们研究了从新盖子确定的迁移率是否可以推断出长期迁移。罐子保持在正常直立位置。由于热处理可能会产生强烈的临时影响，因此使用不同的盖子确定了巴氏杀菌或灭菌初始加热期间以及在环境温度下的迁移。从整个欧洲的销售点召回商业产品，以确定在延长的时间内以及具有不同历史的罐子中的实际迁移情况，并将迁移情况与短期测试数据进行比较，以研究是否可以得出经验关系。结果表明，短期测试可以在迁移的初始阶段比较盖子和增塑剂，但长期外推则需要更复杂的动力学建模。结果还表明，为避免在食品接触材料符合测试中的迁移限制但在实际应用中不符合限制时发生冲突，应重新考虑“官方”测试方法的法律相关性。
