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The Analysis and Migration of Bisphenol A Related Compounds from Metal Food Cans

식품용 금속 캔으로부터 비스페놀 A 관련 물질들의 분석 및 이행 연구

  • Park, Se-Jong (Food Additives and Packaging Division, Ministry of Food and Drug Safety) ;
  • Park, So-Ra (Food Additives and Packaging Division, Ministry of Food and Drug Safety) ;
  • Choi, Jae Chun (Food Additives and Packaging Division, Ministry of Food and Drug Safety) ;
  • Kim, MeeKyung (Food Additives and Packaging Division, Ministry of Food and Drug Safety)
  • 박세종 (식품의약품안전처 첨가물포장과) ;
  • 박소라 (식품의약품안전처 첨가물포장과) ;
  • 최재천 (식품의약품안전처 첨가물포장과) ;
  • 김미경 (식품의약품안전처 첨가물포장과)
  • Received : 2017.07.10
  • Accepted : 2017.07.26
  • Published : 2017.08.30

Abstract

Analysis method was presented for the simultaneous determination of nine bisphenol A related compounds such as bisphenol A (BPA), phenol, p-tert-butylphenol, bisphenol A diglycidyl ether (BADGE), $BADGE{\cdot}2H_2O$, $BADGE{\cdot}2HCl$, bisphenol F diglycidyl ether (BFDGE), $BFDGE{\cdot}2H_2O$ and $BFDGE{\cdot}2HCl$ migrated from inner coatings of metal food cans by high performance liquid chromatography (HPLC) with fluorescence detection. The method was validated by examining the linearity of calibration curve, the limit of detection (LOD), the limit of quantification (LOQ), recovery and uncertainty. The migration tests of nine BPA related compounds were carried out with four food simulants; deionized water (DW), 4% acetic acid, 50% ethanol and n-heptane. There was not any compound detected in DW, 4% acetic acid and 50% ethanol at $60^{\circ}C$ for 30 min and n-heptane at $25^{\circ}C$ for 60 min. BPA and phenol were migrated into 4% acetic acid and 50% ethanol at $95^{\circ}C$ for 30 min. The concentrations were ranged from 0 to $10.77{\mu}g/L$ of BPA and from 0 to $2.35{\mu}g/L$ of phenol. Canned foodstuffs mostly have long-term shelf life. We investigated migration of nine BPA related compounds according to the variation in storage periods (0~90 days) and temperatures (4, 25 and $60^{\circ}C$). All compounds were not founded during 90 days at $4^{\circ}C$ and $25^{\circ}C$, respectively. However BPA and $BADGE{\cdot}2H_2O$ were founded in DW and 4% acetic acid at $60^{\circ}C$. The migration levels of BPA and $BADGE{\cdot}2H_2O$ were close to the value of LOQ, respectively and did not change significantly as storage period. It was founded from results that the migration of BPA related compounds from metal food cans was controlled to a safe level.

식품용 금속 캔의 내면 코팅에 사용되는 에폭시 수지로 부터 용출되어 식품으로 이행될 수 있는 BPA, phenol, p-tert-butylphenol과 BADGE, BFDGE 및 그 가수분해산물과 염화물 등 총 9종의 비스페놀 관련물질들을 HPLC/FLD를 사용하여 동시 분석하는 방법을 확립하여 검량선 및 회수율을 검토하고 식품유사용매로의 이행량을 조사하였다. 23종류의 식품용 금속 캔 총 161건을 대상으로 $60^{\circ}C$에서 30분간 용출한 결과 물, 4% 초산, 50% 에탄올 및 n-heptane에서 전부 불검출이었다. $95^{\circ}C$에서 30분간 용출한 결과는 식품유사용매로 4% 초산과 50% 에탄올을 사용한 경우 BPA는 불검출~$10.77{\mu}g/L$, phenol은 불검출~$2.35{\mu}g/L$ 검출되어 정량한계 수준이었으며, 국내 용출규격인 $600{\mu}g/L$에 비해 매우 낮은 수준임을 확인하였다. 또한 금속 캔은 저장성이 우수하여 식품을 장기간 보관하는 특징이 있어 보관기간(0~90일) 및 온도조건(4, 25, $60^{\circ}C$)에 따른 BPA 등 9개의 BPA 관련물질들의 이행량의 변화를 측정하였다. 온도조건이 $4^{\circ}C$$25^{\circ}C$인 경우 90일 동안 모든 식품유사용매에서 BPA를 비롯하여 9종의 BPA 관련물질들은 검출되지 않았다. 식품유사용매로 물과 4% 초산을 사용하여 $60^{\circ}C$의 온도에서 90일간 저장한 경우 BPA와 $BADGE{\cdot}2H_2O$는 시간이 지남에 따라 약하게 증가하는 경향을 보였으나, 이행량이 70일 이후부터 급격한 증가 없이 대체로 유지되는 수준이었고, 검출값 또한 정량한계 수준으로 매우 낮게 나타났다. 따라서 식품용 금속 캔으로부터 BPA를 비롯한 관련 물질들의 이행량은 안전한 수준으로 관리되고 있음을 알 수 있었다.

Keywords

References

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