Driffield Malcolm, Garcia-Lopez Monica, Christy Julie, Lloyd Antony Stephen, Tarbin Jonathan Andrew, Hough Patrick, Bradley Emma Louise, Oldring Peter Kenneth Thomas
a Packaging and MS Solutions , Fera Science Ltd ., York , UK.
b The Valspar (France) Research Corporation SAS , Tournus , France.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2018 Jun;35(6):1200-1213. doi: 10.1080/19440049.2018.1440643. Epub 2018 Feb 26.
The polymeric coating used in metal packaging such as cans for foods and beverages may contain residual amounts of monomers used in the production of the coating, as well as unreacted linear and cyclic oligomers. Traditionally, although designed for use with plastic food contact materials, food simulants have been used to determine the migration of monomers from coatings into foodstuffs. More recently, food simulants have also been used to determine oligomeric species migrating from can coatings. In the work reported here, the migration of both monomers and oligomers from polyester-based can coatings into food simulants and foodstuffs, some of which were towards the end of their shelf-life, is compared. The concentrations of monomers and selected oligomers in canned foods at the end of their shelf life were found to be significantly lower than those in food simulants, which in turn was lower than those in the extraction solvent acetonitrile.
用于食品和饮料罐等金属包装的聚合物涂层可能含有涂层生产中使用的单体残留量，以及未反应的线性和环状低聚物。传统上，尽管食品模拟物是为与塑料食品接触材料一起使用而设计的，但一直被用于测定单体从涂层向食品中的迁移。最近，食品模拟物也被用于测定从罐涂层迁移的低聚物种。在本文报道的工作中，比较了聚酯基罐涂层中单体和低聚物向食品模拟物和食品中的迁移情况，其中一些食品已接近保质期结束。发现罐装食品在保质期结束时单体和选定低聚物的浓度明显低于食品模拟物中的浓度，而食品模拟物中的浓度又低于萃取溶剂乙腈中的浓度。
