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This study aimed to find the effects of quinolone antibiotics in chicken and beef used in Ankara, Turkey. Total number of 127 chicken and 104 beef meat samples were collected randomly from local markets for analysis. Extraction and determination of quinolones were made by ELISA procedure. One hundred eighteen of 231 (51.1%) examined chicken meat and beef samples were found to contain quinolone antibiotic residue. Among the chicken meat and beef samples, 58 (45.7%) of chicken meat samples and 60 (57.7%) of beef meat samples were positive for quinolones, respectively. The mean levels (±SE) of quinolones were found to be 30.81 ± 0.45 µg/kg and 6.64 ± 1.11 µg/kg in chicken and beef samples, respectively. This study indicated that some chicken and beef meat sold in Ankara contains residues of quinolone antibiotics.

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The aim of this study was to examine the antimicrobial activities of ethanol extracts of five plants containing furanocoumarins. Antimicrobial activities of ethanol extracts of Astrodaucus orientalis (L.) Drude, Bifora radians Bieb., Conium maculatum L., Crithmum maritimum L., Daucus carota L., and standard furanocoumarins (umbelliferone, xanthotoxin, and bergapten) were tested against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Staphylococcus aureus, and Candida albicans using a microdilution method. The minimum inhibition dilution (MID) values of the extracts were determined. Astrodaucus orientalis showed the highest antibacterial activity.