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• W2051213904 abstract "아플라톡신 및 오크라톡신 A의 동시분석법을 확립하여 보다 신속하고 경제적인 분석을 통해 아플라톡신과 오크라톡신 A를 효율적으로 관리하고자 하였다. 시료의 전처리는 80% methanol로 추출하고 면역친화성 컬럼을 이용하여 정제한 다음 trifluoroacetic acid를 이용하여 유도체화 한 후 HPLC-FLD로 분석하였다. 컬럼은 Capcell pak-<TEX>$C_{18}$</TEX>(<TEX>$4.6mm{times}150mm$</TEX>, <TEX>$5{mu}m$</TEX>)을 사용하였으며, 이동상은 water : acetonitrile : methanol (72 : 14 : 14) 용액과 acetonitrile : 0.1% phosphoric acid (50 : 50) 용액을 구배용매조성(gradient mode)으로 분석하였다. 형광검출기의 파장은 파장프로그램을 사용하여, 여기파장 360 nm, 검출파장 450 nm과 여기파장 330 nm, 검출파장 460 nm으로 분석하였다. 아플라톡신 <TEX>$B_1$</TEX>, <TEX>$B_2$</TEX>, <TEX>$G_1$</TEX>, <TEX>$G_2$</TEX>와 오크라톡신 A의 직선성을 검토한 결과 상관계수(<TEX>$R^2$</TEX>) 0.9997~0.9998의 범위였고, 검출한계와 정량한계는 각각 0.05~0.18, <TEX>$0.16{sim}0.60{mu}g/kg$</TEX>이었다. 회수율은 아플라톡신 <TEX>$B_1$</TEX>, <TEX>$G_1$</TEX>, <TEX>$B_2$</TEX>, <TEX>$G_2$</TEX>, 오크라톡신 A 각각 78.4~101.5%, 73.3~102.1%, 81.7~106.7%, 67.0~104.6%, 78.7~120.8%이었다. 확립된 동시분석법을 통한 국내 유통식품을 대상으로 모니터링을 실시한 결과 총 151건 중 13건에서 아플라톡신 및 오크라톡신 A가 검출되었으며 검출 범위는 아플라톡신 <TEX>$B_1$</TEX>은 <TEX>$0.32{sim}1.80{mu}g/kg$</TEX>, 오크라톡신 A는 <TEX>$0.97{mu}g/kg$</TEX>이었다. 이들 결과로부터 우리나라에서 유통 중인 조사한 식품 151건의 아플라톡신과 오크라톡신 A의 검출량은 모두 기준치 이하로 적합한 것으로 조사되었으며 안전한 수준임을 알 수 있었다. The simultaneous analysis and monitoring of aflatoxin <TEX>$B_1$</TEX>, <TEX>$G_1$</TEX>, <TEX>$B_2$</TEX>, <TEX>$G_2$</TEX> and ochratoxin A in foods were carried out by HPLC with fluorescence detection. The samples were extracted with methanol/water mixture. The extract was centrifuged, diluted with phosphate buffer saline (PBS), filtered, and applied to an immunoaffinity column containing antibodies specific to both aflatoxins and ochratoxin A. After washing the column with PBS and water, the toxins were eluted from the column with methanol, and quantified by HPLC, with a run time of approximately 30 min. The recoveries for aflatoxin <TEX>$B_1$</TEX>, <TEX>$G_1$</TEX>, <TEX>$B_2$</TEX>, <TEX>$G_2$</TEX> and ochratoxin A in foods were 78.4~101.5%, 73.3~102.1%, 81.7~106.7%, 67.0~104.6% and 78.7~120.8%, respectively. The limits of detection of aflatoxins and ochratoxin A ranged from 0.05 to <TEX>$0.18{mu}g/kg$</TEX>. According to monitoring result with the established method, aflatoxin <TEX>$B_1$</TEX> and ochratoxin A were found in 13 of 151 domestic commercial foods. The contamination levels were <TEX>$0.32{sim}1.80{mu}g/kg$</TEX> for aflatoxin <TEX>$B_1$</TEX> and <TEX>$0.97{mu}g/kg$</TEX> for ochratoxin A. Therefore, this study showed all commercial foods monitored were safe under the Korean standards for aflatoxins and ochratoxin A." @default.
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• W2051213904 date "2013-03-31" @default.
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• W2051213904 title "Simultaneous Determination and Mornitoring of Aflatoxin and Ochratoxin A in Food" @default.
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