GUIA Group, Department of Analytical Chemistry, University of Zaragoza, I3A, María de Luna, 3, 50018 Zaragoza, Spain.
Waters Corporation, Wilmslow SK9 4AX, United Kingdom.
Food Chem. 2022 Apr 16;374:131777. doi: 10.1016/j.foodchem.2021.131777. Epub 2021 Dec 7.
Biodegradable materials are increasingly being used in manufacturing processes due to their environmental benefits. In this work, a study has been performed to assess the migration of compounds from biodegradable multilayer teacups to a tea solution. Liquid chromatography in conjunction with ion-mobility quadrupole time-of-flight mass spectrometry has been used for the elucidation of non-volatile compounds. An orthogonal projection to latent structures-discriminant analysis has been carried out to compare the tea after migration against untreated tea used as blank. Headspace solid-phase microextraction coupled to gas chromatography-mass spectrometry has been optimised to analyse the migration of volatile compounds. Eight migrants were identified in the tea, six of which were non-intentionally added oligomers. The degree of migration for hot tea ranged from 0.05 and 4.68 mg/kg, exceeding the specific migration limit. Nevertheless, the migration to cold tea was an order of magnitude lower (between 0.003 and 0.56 mg/kg).
由于环境效益，可生物降解材料在制造过程中越来越多地被使用。在这项工作中，研究了从可生物降解的多层茶杯向茶溶液中迁移化合物的情况。采用液相色谱-离子淌度四级杆飞行时间质谱联用技术对非挥发性化合物进行了阐述。正交投影到潜在结构-判别分析用于比较迁移后的茶与用作空白的未处理茶。顶空固相微萃取-气相色谱-质谱联用进行了优化，以分析挥发性化合物的迁移情况。在茶中鉴定出八种迁移物，其中六种是非故意添加的低聚物。热茶的迁移程度范围为 0.05 至 4.68mg/kg，超过了特定迁移限量。然而，冷茶的迁移程度要低一个数量级（0.003 至 0.56mg/kg）。
