earticle

영어

Bisphenol A (BPA) is an endocrine disruptor frequently used in food containers, including epoxy resin and polycarbonates. BPA concentrations were monitored by high performance liquid chromatography (HPLC) under photosensitization of riboflavin (RF), methylene blue (MB), rose bengal (RB), or titanium dioxide (TiO2) and the involvement of singlet oxygen was determined using sodium azide (NaN3). The stability of BPA decreased significantly in the order of RF, RB, and MB photosensitization (p<0.05), while the concentration of BPA in samples with TiO2 was not significantly different from that of control samples without photosensitizers under light (p>0.05). The stability of BPA decreased in an MB concentration-dependent manner and increased as the concentration of added NaN3 increased, implying that singlet oxygen was involved in the photodegradation of BPA during MB photosensitization. The results of this study may help control the BPA content in foods or the environments using photosensitized oxidation and visible light irradiation.

한국어

내분비교란물질인 BPA는 식품의 포장용기나 젖병 등의 제조에 이용되며, 라이보플라빈 광산화에 의해 안정성이 감소하는 것으로 보고된 바 있다. 본 연구에서는 광산화 시 메틸렌블루, 로즈벵갈, 라이보플라빈, 또는 이산화티타늄 등의 감광제 종류에 따른 BPA안정성을 비교하였고, sodium azide(NaN3) 농도에 따른BPA안정성을 확인하였다. BPA 농도는 라이보플라빈, 로즈벵갈,메틸렌블루 순서로 유의적으로 감소하였지만(p<0.05), 이산화티타늄 첨가 시료와 대조구인 감광제 무첨가군의 BPA 농도는 유의적인 차이가 없었다(p>0.05). BPA의 안정성은 메틸렌블루 농도의존적으로 감소하였으며, NaN3 농도가 증가할수록 BPA 안정성은 증가하였다. 이는 메틸렌블루 광산화에 의한 BPA농도 감소에일중항산소가 관여함을 의미한다.