AKTS-SML软件预测5 种塑料薄膜中有机助剂向脂肪食品模拟液的迁移

为验证AKTS-SML软件模拟单层塑料薄膜中有机助剂向脂肪性食品模拟液迁移的准确性，以5 种塑料薄膜为代表，从大量文献中找到关于这5?种塑料薄膜中有机助剂迁移的实验值，并根据文献中特定的迁移实验条件，使用SML软件模拟5?种塑料薄膜中有机助剂的迁移，并将文献参考值和模拟值进行对比。结果发现Piringer公式中计算扩散系数DP的塑料材料特定参数AP’值的设定会对模拟的迁移量产生较大影响。模拟迁移实验结果表明，在温度较低的情况下大多数塑料薄膜的AP’值更加接近其平均值，而在温度较高的情况下大多数塑料薄膜的AP’值更加接近其极端值。因此在不同的迁移条件下使用合理的AP’值会使SML软件模拟的迁移量更加接近文献参考值，另外塑料薄膜中有机助剂的初始含量，塑料薄膜厚度和有机助剂在迁移过程中的降解也会对模拟结果产生一定影响。经由多组文献数据发现AKTS-SML软件在大多数情况下能够很好地模拟单层塑料薄膜中有机助剂向食品模拟物的迁移，但当有机助剂迁移过程中存在降解情况或塑料薄膜中有机助剂含量过高时，软件模拟值与文献参考值存在偏差，需要进一步改进。

Prediction of Organic Additives Migration from Five Kinds of Plastic Films into Fatty Food Simulants by AKTS-SML Software

In order to verify the accuracy of AKTS-SML software in simulating the migration of organic additives from single-layer plastic film into fatty food, five kinds of plastic films were chosen, and experimental data were selected from a large number of research publications. AKTS-SML software was used to simulate the migration processes and a comparison between the experimental and simulated values was made. It was found that setting up the plastic material specific parameter AP’ value used to calculate diffusion coefficient DP through the Piringer formula had a significant influence on simulated migration values. The results of simulated migration showed that at low temperature, AP’ values of most plastic materials were closer to their mean values, whereas they were closer to their extreme high values at high temperature. As a consequence, under different migration conditions, appropriate AP’ values gave SML software simulated migration values closer to the experimental ones. In addition, the initial contents of organic additives in plastic films and the thickness of plastic films and degradation of organic additives during migration also had influences on the simulation results. By analyzing several sets of experimental data from the literature, we found that AKTS-MLS software could simulate the migration of organic additives from single-layer plastic films to food simulants well in most cases. However, when organic additives were degraded during the migration process and their initial contents in plastic films were too high, the results of AKTS-SML software simulation deviated from the experimental results. Thus, further improvement is needed.