中文摘要：

以鲜肉和食用油为对象,分别设置80℃和4℃（鲜肉）、25℃和4℃（食用油）,研究16种邻苯二甲酸酯（phthalic acid esters,PAEs）从塑料包装向肉油类食品间的迁移量,分析迁移量与温度、接触时间和塑料包装中PAEs的含量和种类的关系。结果表明：PAEs从塑料包装向肉、油类食品间存在迁移现象,80℃、120 min时PAEs向鲜肉中的总迁移量为3.2-5.6 mg/kg,4℃,6 d的总迁移量和80℃,120 min相当。25℃,25 d向食用油中的总迁移量为9.0-10.0 mg/kg,显著高于4℃。塑料包装材料中PAEs向肉、油类食品的迁移在接触初期较快,且迁移量随着接触时间的延长而增大。塑料包装材料中PAEs的含量高,向肉、油类食品中的总迁移量也升高,在25℃和80℃时,总迁移量与包装材料中PAEs的含量呈正相关关系。不同种类的PAEs的迁移存在差异,分子质量大的PAEs迁移速度较慢,其中美国国家环保署优先控制的6种PAEs均会发生一定的迁移。

英文摘要：

The migration of 16 phthalic acid esters （PAEs） from plastic packaging to fresh pork at 80 or 4℃ and peanut oil at 25 or 4 ℃ was studied as a function of temperature, contact time and types and amounts of PAEs. The results confirmed that PAEs migrated from plastic packaging to meat and edible oil. The total migration amount of 16 PAEs （∑16PAEs） from 3 different plastic packagings to meat was 3.2-5.6 mg/kg at 80℃ in 120 min, which was close to that at 4℃ in 6 days. The ∑16PAEs from 2 plastic packaging materials to edible oil was 9.0-10.0 mg/kg at 25℃ in 25 days, which was significantly higher than at 4 ℃. The ∑16PAEs from plastic packaging to foodstuff increased with longer contact time, and the migration rate was faster during the early stages. A positive correlation between ∑16PAEs and PAE contents was observed at both 25 and 80℃. PAEs migrated at varying rates depending on molecular size; higher molecular weight resulted in lower migration rate. All the 6 PAEs limited with priority by the U. S. Environmental Protection Agency （EPA） could migrate.