Simultaneous Measurement of Fluoroquinolones in Eggs by a Combination of Supercritical Fluid Extraction and High Pressure Liquid Chromatography(Analytical Chemistry)
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概要
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Simultaneous detection of the fluoroquinolone antibiotics ciprofloxacin, enrofloxacin, ofloxacin, and norfloxacin in eggs by a combination of supercritical fluid extraction (SFE) and high pressure liquid chromatography (HPLC) was studied. Lipid matrices that have been considered to result in poor extraction and isolation of fluoroquinolones in eggs were removed first by SFE with supercritical CO_2 alone, and then the fluoroquinolones were extracted by SFE with supercritical CO_2 containing 20% (v/v) methanol for HPLC analysis. A time-course study of the extraction of lipid matrices of eggs suggested that the SFE method successfully removed the matrices within 20 min. When the fluoroquinolones added to control eggs were extracted by SFE, the extraction efficiency was similar to that by the solvent extraction method, giving the recovery percentages from 83 to 96% in a 40 min-extraction time. The fluoroquinolones extracted from eggs by SFE were analyzed simultaneously by HPLC equipped with a fluorescence detector with detection sensitivity at about 10 ppb for the detection limit. The standard calibration profiles of fluoroquinolones showed linear responses to HPLC, showing more than 0.995 for the mean r^2 value. This is the first report of the simultaneous measurement of fluoroquinolones in eggs by a combination of SFE and HPLC. Using the SFE method allowed us to avoid extensive sample preparation such as solvent extraction and chromatographic cleanup that are basically required in extraction of fluoroquinolones.
- 社団法人日本農芸化学会の論文
- 2003-06-23
著者
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LEE Chang
Department of Oral Biology, Yonsei University College of Dentistry
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KIM In
Department of Radiation Oncology, Seoul National University College of Medicine
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Kim In
Department Of Animal Resource And Sciences Dankook University
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Shim J
Chonnam National Univ. Gwangju Kor
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Shim J
Division Of Applied Bioscience And Biotechnology Institute Of Agricultural Science And Technology Co
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Kim M
Division Of Applied Bioscience And Biotechnology Institute Of Agricultural Science And Technology Co
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Kim Mi
Division Of Electrical And Computer Engineering Pohang University Of Science And Technology (postech
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Lee Chang
Department Of Animal Science Utsunomiya University
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Kim I
Department Of Environmental Science And Engineering Kwangju Institute Of Science And Technology (k-j
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Kim In
Department Of Chemical And Materials Engineering University Of Alberta
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Lee C
Department Of Civil And Environmental Engineering Kwangju University
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SHIM Jae
Division of Applied Bioscience and Biotechnology, Institute of Agricultural Science and Technology,
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Lee Mi
Division Of Applied Bioscience And Biotechnology Institute Of Agricultural Science And Technology Co
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Lee Chang
Departlnent Of Biology College Of Natural Sciences Kyungpook National University Korea
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KIM Mi
Division of Applied Bioscience and Biotechnology, Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonnam National University
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