title: Migration of photoinitiators from paper to fatty food simulants: experimental studies and model application.
abstract: The migration of five different photoinitiators from kraft paper to two fatty food simulants, Tenax(®) and 95% ethanol, was investigated under different conditions. The effects of temperature and storage time, as well as the physicochemical properties of the photoinitiators on migration, were discussed. Mathematical models based on Fick's second law generated from two cases, single- and two-side contacts, were applied to predict the migration behaviour from the paper to the food simulants. The partition coefficients estimated from the model decreased with temperature. The diffusion coefficients of the selected photoinitiators from the paper ranged from 1.55 × 10(-10) to 7.54 × 10(-9) cm(2) s(-1) for Tenax and from 2.79 × 10(-9) to 8.03 × 10(-8) cm(2) s(-1) for 95% ethanol. The results indicate that the applied model can predict the migration of photoinitiators in the initial short period before equilibrium, and the migration from paper to Tenax through a single-side contact demonstrated an especially high concordance.
authors.affiliation: a State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology , Tianjin University , Tianjin , China.
authors.forename: Bo
authors.initials: B
authors.lastname: Han
authors.affiliation: b Research Center of Hunan Entry-Exit Inspection and Quarantine Bureau , Changsha , China.
authors.forename: Li
authors.initials: L
authors.lastname: Ding
authors.affiliation: a State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology , Tianjin University , Tianjin , China.|c Collaborative Innovation Center of Chemical Science and Engineering , Tianjin , China.|d Tianjin Key Laboratory of Membrane Science and Desalination Technology , Tianjin University , Tianjin , China.
authors.forename: Rongxin
authors.initials: R
authors.lastname: Su
authors.affiliation: e School of Pharmaceutical Science and Technology , Tianjin University , Tianjin , China.
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.affiliation: b Research Center of Hunan Entry-Exit Inspection and Quarantine Bureau , Changsha , China.
authors.forename: Libing
authors.initials: L
authors.lastname: Wang
authors.affiliation: a State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology , Tianjin University , Tianjin , China.|c Collaborative Innovation Center of Chemical Science and Engineering , Tianjin , China.|d Tianjin Key Laboratory of Membrane Science and Desalination Technology , Tianjin University , Tianjin , China.
authors.forename: Wei
authors.initials: W
authors.lastname: Qi
authors.affiliation: a State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology , Tianjin University , Tianjin , China.
authors.forename: Zhimin
authors.initials: Z
authors.lastname: He
mesh_terms: D000327:Adsorption; D000465:Algorithms; D001577:Benzophenones / Q000032:analysis / Q000737:chemistry*; D001628:Beverages / Q000032:analysis; D055598:Chemical Phenomena; D002681:China; D004041:Dietary Fats / Q000032:analysis; D004058:Diffusion; D000431:Ethanol / Q000737:chemistry; D005223:Fats / Q000737:chemistry*; D005506:Food Contamination / Q000517:prevention & control*; D018857:Food Packaging; D061353:Food Storage; D007700:Kinetics; D008956:Models, Chemical; D008970:Molecular Weight; D010209:Paper; D017319:Photosensitizing Agents / Q000032:analysis / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013696:Temperature
chemical_list: D001577:Benzophenones; D004041:Dietary Fats; D005223:Fats; D017319:Photosensitizing Agents; D011108:Polymers; C010514:tenax; D000431:Ethanol
keywords: Migration; food packing paper; food safety; model