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Analysis of Off-flavor Generated from a Polyethylene Terephthalate Water Bottles and Caps by Using an Electronic Nose
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 Title & Authors
Analysis of Off-flavor Generated from a Polyethylene Terephthalate Water Bottles and Caps by Using an Electronic Nose
Han, Hyun Jung; Park, Su Won; Jung, Hyo Yeon; Kim, Jung Sun; Dong, Hyemin; Noh, Bong Soo;
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 Abstract
The objective of the study was to investigate the off-flavor generated from PET water bottles and their caps by using a mass spectrometry-based electronic nose. The ion fragment data obtained from the electronic nose were used for discriminant function analysis (DFA). In the case of increased concentrations of the contamination of water, the off-flavor pattern depended on the discriminant function second score instead of the discriminant function first score. To identify the cause of off-flavor in polyethylene terephthalate (PET) bottled water, the PET bottle and its cap were analyzed by DFA. The results showed that the cap generated more volatile compounds than the bottle or mineral water did. The substances causing the off-flavor were predicted to be 2,4-di-tert-butylphenol (2,4-DTBP), nonanal, and decanal when the main peak of the mass spectrum was compared with the major ion fragments of the electronic nose. Thus, using this method, we could determine whether the PET water bottle was contaminated and whether the off-flavor resulted from contamination of the bottle cap.
 Keywords
off-flavor water;PET water bottle;bottle cap;volatile component;electronic nose;
 Language
Korean
 Cited by
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Electronic Nose Analysis of Ethanol in Gochujang for Halal Food Certification, Korean Journal of Food Science and Technology, 2016, 48, 3, 193  crossref(new windwow)
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Analysis of ethanol in soy sauce using electronic nose for halal food certification, Food Science and Biotechnology, 2017, 26, 2, 311  crossref(new windwow)
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