PMID- 17172132 OWN - NLM STAT- MEDLINE DCOM- 20070111 LR - 20191210 IS - 0005-9366 (Print) IS - 0005-9366 (Linking) VI - 119 IP - 11-12 DP - 2006 Nov-Dec TI - Analysis of fluoroquinolone residues in edible chicken tissues using supercritical fluid extraction. PG - 456-60 AB - We evaluated a procedure that uses high-performance liquid chromatography to determine the levels of four fluoroquinolones (ciprofloxacin, enrofloxacin, norfloxacin, and ofloxacin) remaining in chicken breast muscle, liver, and kidneys after the analytes are extracted using supercritical fluid extraction (SFE). These antimicrobial fluoroquinolones were extracted by SFE using supercritical CO2 containing 30% (v/v) methanol. The recovery, limit of detection, accuracy, and precision of this method were evaluated on the basis of fortified matrices at concentrations of 25 to 250 microg/kg. The method is validated and shown to be linear in the range of 2.5-50 microg/kg. Spike recoveries for muscle, liver and kidney samples prepared at 4 spiking levels were ranged from 56.6-104.3%, 51.2-98.4% and 62.2-97.8%, respectively. The coefficient of variation (CV) for recovery as a measure of relative variability was between 3% and 13%, and the relative standard deviation (RSD) was < 20%. The limits of quantitation (LOQ) were 10 microg/kg for enrofloxacin, 12.5 microg/kg each for ciprofloxacin and norfloxacin and 25 microg/kg for ofloxacin; these values were lower than the maximum residue levels (MRLs) authorized by the European Community. The 4 compounds were evaluated simultaneously, and the method was shown to be applicable for analyzing their residues in edible chicken tissues. FAU - Choi, Jeong Heui AU - Choi JH AD - Natural Products Chemistry Laboratory, Institute of Agricultural Science and Technology, Chonnam National University, Yong-Bong Dong, Buk-Ku, Gwangju, Republic of Korea. FAU - Abd El-Aty, A M AU - Abd El-Aty AM FAU - Shen, Jing Yu AU - Shen JY FAU - Kim, Mi Ra AU - Kim MR FAU - Shim, Jae-Han AU - Shim JH LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Berl Munch Tierarztl Wochenschr JT - Berliner und Munchener tierarztliche Wochenschrift JID - 0003163 RN - 0 (Anti-Bacterial Agents) RN - 0 (Fluoroquinolones) SB - IM MH - Animals MH - Anti-Bacterial Agents/analysis MH - Chickens/metabolism MH - Chromatography, High Pressure Liquid/*methods MH - Consumer Product Safety MH - Drug Residues/*analysis MH - Fluoroquinolones/*analysis MH - Food Contamination/*analysis MH - Humans MH - Meat/*analysis MH - Organ Specificity MH - Sensitivity and Specificity EDAT- 2006/12/19 09:00 MHDA- 2007/01/12 09:00 CRDT- 2006/12/19 09:00 PHST- 2006/12/19 09:00 [pubmed] PHST- 2007/01/12 09:00 [medline] PHST- 2006/12/19 09:00 [entrez] PST - ppublish SO - Berl Munch Tierarztl Wochenschr. 2006 Nov-Dec;119(11-12):456-60.