Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Analysis of Acetaldehyde and Formaldehyde Migrated from Polyethylene Terephthalate Bottles into Mineral Water

페트병 생수 중 아세트알데하이드와 포름알데하이드의 이행 분석

  • Received : 2010.12.31
  • Accepted : 2011.05.17
  • Published : 2011.08.31
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Abstract

The objective of this study was to determine the extent to which acetaldehyde (AA) and formaldehyde (FA) migrated from polyethylene terephthalate (PET) bottles into mineral water during storage at 25 and 35$^{\circ}C$ for 240 days. Generally, AA and FA were observed to migrate more at 35$^{\circ}C$ than at 25$^{\circ}C$. The amount of FA in the samples irradiated under UV lamps was higher than in those stored in the dark over the storage period and vice versa for AA. Using a triangular test, the sensory panels distinguished a difference between one sample and the other two mineral water samples that had been exposed to UV lamps after 60 days of storage at 35$^{\circ}C$ (p<0.05). At this time, FA and AA concentrations were measured at 267.4 and 515.3 g/L, respectively. After 120 days, an independent mineral water sample from the other two samples in all treatments could be distinguished by the panel members at a significance level of p<0.001.

본 연구에서는 PET병에 포장된 생수의 제조공정 및 유통과정중 온도 및 자외선과 같은 외부요인에 의하여 PET병에서 생수로 이행될 수 있는 휘발성 물질에 의한 생수 품질 또는 안전성을 검증하고자 하였다. PET 생수의 25와 35$^{\circ}C$ 저장 중 FA와 AA함량은 점차 증가하는 경향을 보이다가 180일과 120-180일 후부터 각각 감소되기 시작하였다. PET병 생수는 35$^{\circ}C$에서 자외선이 조사되는 상태로 저장 시 60일 후부터 대조구 생수와 차이가 식별되기 시작하였다. 이 때 FA와 AA의 농도는 각각 267.4 ${\mu}g/L$와 515.3 ${\mu}g/L$이었다. 120일 이후에는 저장 온도와 자외선 조사 여부에 상관없이 모든 시료군에서 패널들이 대조군 생수와의 차이를 식별하였다. 본 연구를 통하여 PET병에 포장된 생수를 자외선에 노출시키거나 고온에서 장기간 저장할 경우 FA나 AA의 증가가 초래되며 이로 인하여 생수의 품질이 저하된다는 것이 확인되었다. 따라서 PET병 생수의 관능학적 및 위생학적 품질을 높이기 위해서는 제조공정, 특히 성형과정 중 고열에 대한 노출을 줄이고 제조된 PET병 또는 생수의 유통시 저장 온도가 되도록 낮게 유지하는 것이 중요할 것으로 판단된다.

Keywords

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