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http://dx.doi.org/10.13103/JFHS.2017.32.5.434

Simultaneous Determination of UV Absorbers Migrated from Polyethylene and Polypropylene Food Packaging Materials into Food Simulants by HPLC-UVD  

Choi, Heeju (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Choi, Jae Chun (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Bae, In-Ae (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Lee, Chanyong (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Park, Se-Jong (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Kim, MeeKyung (Food Additives and Packaging Division, National Institute of Food and Drug Safety Evaluation)
Publication Information
Journal of Food Hygiene and Safety / v.32, no.5, 2017 , pp. 434-442 More about this Journal
Abstract
The UV light in sunlight breaks down the chemical bonds in a polyolefin polymer through a process called photodegradation, ultimately causing cracking, chalking, colour changes, and loss of physical properties such as impact strength, tensile strength, elongation, and others. UV absorbers are used to prevent or terminate the oxidation of plastics by UV light. They are receptive to UV radiation and dissipate the energy harmlessly as heat. Benzotriazoles and benzophenones are used mainly in polyolefins such as polyethylene and polypropylene. In this study, we have developed a method for the analysis of 12 UV absorbers, which are Uvinul 3000, Cyasorb UV 24, Uvinul 3040, Tinuvin 312 and P, Seesorb 202, Chimassorb 81, Tinuvin 329, 234, 326, 328 and 327, migrated from the food packaging materials into four food simulants for aqueous, acidic, alcoholic and fatty foods. The UV absorbers in food simulants were determined by reversed-phase high performance liquid chromatograph-ultraviolet detector with 310 nm after solid-phase extraction with a hydrophilic-lipophilic balance (HLB) cartridge or dilution with isopropanol. The analytical method showed a good linearity of coefficient ($R^2{\geq}0.99$), limits of detection (0.049~0.370 mg/L), and limits of quantification (0.149~1.120 mg/L). The recoveries of UV absorbers spiked to four food simulants ranged from 70.05% to 110.13%. The developed method would be used as a reliable tool to determine concentrations of the migrated UV absorbers.
Keywords
Polyethylene; Polypropylene; UV Absorbers; Analytical Method; HPLC-UVD;
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