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Determination of Four Macrolide Antibiotics Residues in Chicken Muscle Using High-Performance Liquid Chromatography

액체크로마토그래피를 이용한 닭고기 시료에서의 마크로라이드계 동시분석법 개발

  • 이상희 (한국식품연구원, 식품분석센터) ;
  • 유미영 (한국식품연구원, 식품분석센터) ;
  • 신동빈 (한국식품연구원, 식품분석센터)
  • Received : 2012.09.05
  • Accepted : 2012.12.24
  • Published : 2013.03.31

Abstract

A simple and rapid method has been developed and validated for simultaneous determination of each macrolides residues (spiramycin, josamycin, tilmicosin, tylosin) in chicken muscle by high-performance liquid chromatography- photo diode array (HPLC-PDA). Chicken muscle sample have been extracted with liquid-liquid extraction process; analytes was extracted by acetonitrile, and then defatted with hexane saturated by acetonitrile. The HPLC separation was performed on a Unison UK-$C_{18}$ ($150mm{\times}3.0mm$, $3{\mu}m$) with a gradient system of 0.1% trifloroacetic acid (TFA) and 0.1% trifloroacetic acid (TFA) in acetonitrile as the mobile phase. The drugs were detected at 232 nm for spiramycin and josamycin, and 287 nm for tilmicosin and tylosin. The limits of quantification (LOQs) were between 27 and $59{\mu}g/kg$; and the intra- and inter-day precision (relative standard deviation; RSD) was between 0.9-13.2 and 2.4-13.1%, respectively in chicken muscle sample. The method may has been successfully applied for multiresidue determination of four macrolides below the maximum residue limits (MRLs) established by the European Union (EU).

본 논문에서는 축산물 중 닭고기 내 마크로라이드계(MLs) 항생물질(spiramycin, josamycin, tilmicosin, 그리고 tylosin) 4종을 분석하기 위하여, 액-액 추출 과정을 거쳐서 PDA 검출기가 장착된 액체크로마토그래피를 이용하여 MLs를 효율적으로 동시분석하는 방법을 확립하였다. 컬럼은 Unison UK-C18 ($150mm{\times}3mm$ id, $3{\mu}m$), 이동상 용매는 0.1% TFA와 0.1% TFA in ACN로 기울기 용리를 사용하였으며, 유속은 0.7 mL/min, 그리고, 주입량은 $10{\mu}L$로 설정하여 분석하였다. 확립된 분석조건으로, 표준검정 곡선은 $50-1000{\mu}g/kg$의 농도범위에서 상관계수가 0.9975 이상의 양호한 직선성을 나타내었으며, 회수율은 저, 중, 고농도로 첨가하여 분석한 결과, 80.4-99.1%를 나타내었다. 검출한계는 $8.8-19.6{\mu}g/kg$이었고, 정량한계는 $26.6-59.4{\mu}g/kg$이었으며, 일내(intra-day)와 일간(inter-day) 정밀도(CV%)는 0.9-13.2%, 2.4-13.1%이었다. 따라서, 확립된 분석방법은 축산물 중 닭고기 시료 내 MLs를 효과적으로 분석하는데 이용될 수 있을 것으로 사료된다.

Keywords

References

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