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KMID : 0380620140460010019
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Korean Journal of Food Science and Technology
2014 Volume.46 No. 1 p.19 ~ p.24
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Identification of the Volatile Compounds in Polyethylene Terephthalate Bottles and Determination of Their Migration Content into Mineral Water
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Jung Eui-Min
Kim Dong-Joo
Lee Keun-Taik
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Abstract
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This study was carried out to identify the volatile organic compounds (VOCs) in polyethylene terephthalate(PET) bottles and to determine the extent to which VOCs migrate into mineral water during the bottling process andstorage. A greater amount of nonanal and decanal was generated from the PET bottles than from the PET preforms.Benzene, ethylbenzene, nonanal, and vinyl benzoate were identified from the PET bottles when the incubation temperatureof the headspace solid-phase microextraction (HS-SPME) sampler was set to 60, 80, and 100°C. As the incubationtemperature increased, the concentrations of nonanal, vinyl benzoate, and decanal increased significantly. When the highdensitypolyethylene (HDPE) PET bottle caps were extracted with dichloromethane, the level of Irgafos 168 was found tobe 206±20.1 μg/g. The concentration of 2,4-di-tert-butylphenol in water was 4.80±0.2 μg/L. Therefore, it is necessary toavoid exposing PET and HDPE resins to high temperatures during the manufacturing process and storage of bottled water.
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KEYWORD
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PET, high density polyethylene, volatile compound, migration, bottled water
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