酸性环境下金属三片罐涂层中三聚氰胺迁移规律

Research on migration of melamine into acidic medium from the coating of three-piece metal cans

研究金属三片罐内涂层中三聚氰胺迁移进入酸性饮料中的迁移规律,并以模拟物为体系建立迁移数学模型,进行效果验证。结果表明:温度越高,迁移进入酸性饮料中的三聚氰胺的速度越快,迁移达到平衡所需时间越短,但迁移值远低于欧盟的限量标准30mg/kg。所建的模型能够较好地预测金属三片罐中三聚氰胺的迁移行为,为评估三片罐在食品包装中的安全性提供试验依据。

The migration rule of melamine （MEL） was investigated from the coating of three-piece metal cans into acidic beverages. On the basis of experimental data, migration model was established to predict the migration trend of this compound into simulated solution. Results showed that the migration rate of MEL into acidic beverages increased and the time of migration reaching equilibrium shortened with the higher temperature. The predicted data of established migration model and experimental data matched well, which provided effective supports for the safety assessment of three-piece metal cans applied in food packaging.