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Establishment of an Analytical Method for Novobiocin in Livestock Products Using HPLC-UVD

HPLC-UVD를 이용한 축산식품 중 Novobiocin의 시험법 확립

  • Park, Hee-Ra (Food Chemical Residues Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Food and Drug Administration) ;
  • Kwon, Chan-Hyeok (Food Standardization Division, Department of Food Standardization, Food and Drug Administration) ;
  • Lee, Jong-Goo (Novel Food Division, Food and Drug Administration) ;
  • Kim, Hyung-Soo (Food Chemical Residues Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Food and Drug Administration) ;
  • Chae, Young-Sik (Food Chemical Residues Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Food and Drug Administration) ;
  • Oh, Jae-Ho (Food Chemical Residues Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Food and Drug Administration) ;
  • Kwon, Ki-Sung (Center for Food and Drug Analysis, Busan Regional Food and Drug Administration)
  • 박희라 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 화학물질과) ;
  • 권찬혁 (식품의약품안전청 식품기준과) ;
  • 이종구 (식품의약품안전청 신소재식품과) ;
  • 김형수 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 화학물질과) ;
  • 채영식 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 화학물질과) ;
  • 오재호 (식품의약품안전청 식품의약품안전평가원 식품위해평가부 화학물질과) ;
  • 권기성 (부산지방식품의약품안전청 시험분석센터)
  • Received : 2011.09.27
  • Accepted : 2012.03.07
  • Published : 2012.06.30

Abstract

Novobiocin is a coumarin-containing antibiotic, and has a longer half-life in various animals than other veterinary medicines. A simple and rapid high-performance liquid chromatography assay for the determination of residual novobiocin levels in chicken, beef and milk has been developed and validated. The separation condition for HPLC/UVD was optimized by a MG II $C_{18}$ (4.6 mm $ID{\times}250$ mm, 5 ${\mu}m$) column with 0.1% formic acid in $H_2O$/0.1% formic acid in Acetonitrile (40/60, v/v) as the mobile phase at a flow rate of 1.0 mL/min and the detection wavelength was set at 340 nm. Residues were extracted from tissue by blending with methanol. After liquid-liquid partitioning, lipid materials were removed with n-hexane and purification as Silica (1 g, 6 mL) cartridge with 10 mL acetone/dichloromethane (10/90, v/v). Limit of quantification and linearity performed by the analytical method were 0.02 mg/kg and 0.999 ($r^2$), and the recovery range was $88.8{\pm}5.6-100.3{\pm}4.4$, $88.8{\pm}7.2-97.0{\pm}3.2$ and $88.1{\pm}4.3-92.8{\pm}3.6%$. It is expected that this analytical method with regards to novobiocin in chicken, beef and milk could be applied as an official method to administer food safety on veterinary medicines.

노보비오신은 동물용의약품 중 약산성 항생제이며, 우리나라의 경우 선진국에 비해 항생제의 사용이 높은 만큼 동물용의약품의 잔류 사례는 계속해서 증가하고 있다. 이에 따라 식품 중 잔류동물용의약품의 안전관리를 위해 축산 식품 중 닭고기, 소고기 및 우유에서 노보비오신에 대한 HPLC-UVD를 이용한 잔류 분석법을 확립하였다. 각 시료 일정량에 메탄올을 가하고 균질화하여 대상 성분을 추출하고 액-액분배법으로 지방성분을 제거한다. 대상성분이 추출된 여액을 실리카 카트리지를 이용하여 정제한 다음 HPLC-UVD로 분석하였다. 확립된 시험법의 정량한계와 직선성은 CODEX 기준에 적합한 수준으로 각각 0.02 mg/kg과 0.999 ($r^2$)이었으며 회수율은 닭고기, 소고기 및 우유에서 각각 $88.8{\pm}5.6-100.3{\pm}4.4$, $88.8{\pm}7.2-97.0{\pm}3.2$$88.1{\pm}4.3-92.8{\pm}3.6%$이었다. 본 연구에서 확립된 노보비오신의 시험법은 동물용의약품의 안전관리를 위한 공정시험법으로 활용될 것으로 기대된다.

Keywords

References

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