| abstract |
The present invention is a technique for simultaneously extracting the fluoroquinolone antibiotics Ciprofloxacin, Enrofloxacin, Ofloxacin and Norfloxacin in the egg, supercritical extraction vessel Egg samples containing these antibiotics were added and extracted with pure supercritical carbon dioxide at 300 psi pressure and a temperature of 60 ° C for up to 40 minutes to remove lipoprotein impurities in eggs first, and then a small amount of cosolvent was added to supercritical carbon dioxide. A method for simultaneously extracting and purifying these antibiotics from a sample by addition. The present invention has an extraction efficiency similar to that of a general solvent extraction method, and the extraction process is simple, saves time, and saves the cost of the solvent, which is effective for the extraction of fluoroquinolone antibiotics from eggs. |