食品接触聚乳酸杯盖中的滑石粉迁移分析

采用国标方法对食品接触聚乳酸（PLA）杯盖进行了总迁移测试,利用原子吸收光谱法对其食品模拟液中滑石粉的迁移量进行了检测,同时采用傅里叶红外光谱法对迁移物蒸发残渣中的滑石粉进行了定性鉴定,并探讨了滑石粉在食品接触材料中的安全性问题。结果表明,本方法准确、快速、简便,可用于食品接触材料中滑石粉的快速鉴别和安全性评价;滑石粉在食品模拟液中不易迁出,因此当PLA制品与食品接触时,其中的滑石粉迁移至食品的风险较低。

Analysis of Talc Migration in Polylactic Acid Cup Cover for Food Contact

In this study, a national standard method was used to measure the total migration of a food?contacted polylactic acid cup cover. The migration of talc powders in a food simulation solution was analyzed using atomic absorption spectrometry, and the talc powders in the evaporation residue of the migration was qualitatively identified using fourier transform infrared spectroscopy. The safety of talc powders in food?contacted materials was discussed. The results indicated that the method used in this work was accurate, rapid and simple, and it could be used for the rapid identification and safety evaluation of talc in food?contacted materials. Talc is not easily migrated into the food simulation solution. There is a low risk for talc to migrated to food when PLA products are contacted with foods.