Migration behavior of photoinitiators in polyethylene-coated paper for takeaway fast food

Yingtong Wu, Jifeng Lang, Guangfa Liu, Lijun Wang, H. Song, Chongxing Huang
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Abstract

The migration of photoinitiators (PIs): benzophenone (BP), ethyl 4-dimethylaminobenzoate (EDAB), and 4-chlorobenzophenone (CBP), from polyethylene (PE)-coated paper to 4% (v/v) acetic acid and 10% (v/v) saltsimulated food solution was quantitatively analyzed using gas chromatography–mass spectrometry. The migration behavior of the three PIs was studied under three specific working conditions: conventional heating, microwave power, and random vibration level. The migration rate of the three PIs in acidic food simulants was ranked from BP > EDAB > CBP under the specific working conditions. The mobility of the three PIs increased with increasing temperature, microwave power, and random vibration acceleration in 4% (v/v) acetic acid by 10, 10, and 15%, respectively. The experimental migration data of three PIs in PE-coated paper under different temperatures and microwave powers were used to establish the Crank monolayer migration model according to Fick’s second law. The diffusion coefficient D increased with an increase in experimental conditions. According to the migration data under the condition of random vibration level, a mathematical model conforming to the Fick model was established, fitting the migration process. These results showed that conventional heating, microwave heating, and vibration could affect the food safety of PE-coated paper.
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光引发剂在外卖快餐用聚乙烯涂布纸中的迁移行为
采用气相色谱-质谱联用技术定量分析了光引发剂(pi):二苯甲酮(BP)、4-二甲氨基苯甲酸乙酯(EDAB)和4-氯苯甲酮(CBP)从聚乙烯(PE)涂布纸向4% (v/v)乙酸和10% (v/v)盐模拟食品溶液的迁移。在常规加热、微波功率和随机振动三种特定工况下,研究了三种pi的迁移行为。在特定工况下,3种pi在酸性食品模拟剂中的迁移速率顺序为BP > EDAB > CBP。随着温度、微波功率和4% (v/v)醋酸随机振动加速度的增加,三种pi的迁移率分别提高了10%、10%和15%。利用三种pi在不同温度和微波功率下在pe涂布纸中的迁移实验数据,根据菲克第二定律建立了曲克单层迁移模型。扩散系数D随实验条件的增加而增大。根据随机振动水平下的迁移数据,建立了符合菲克模型的数学模型,拟合了迁移过程。结果表明,常规加热、微波加热和振动都会影响pe涂布纸的食品安全性。
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