Table 7.
Correlation between ELISA- and HPLC-detectable concentrations of ciprofloxacin, streptomycin, sulphanilamide, and tetracycline residues in beef, chicken and pork.
| Analytical Methods | ELISA A1 | HPLC A1 | ELISA A2 | HPLC A2 | ELISA A3 | HPLC A3 | ELISA A4 | HPLC A4 |
|---|---|---|---|---|---|---|---|---|
| Beef | ||||||||
| ELISA A1 | 0.71 * | −0.22 | −0.08 | 0.10 | −0.16 | −0.08 | −0.09 | |
| HPLC A1 | −0.20 | −0.10 | 0.03 | −0.11 | −0.06 | −0.05 | ||
| ELISA A2 | 0.40 | 0.02 | −0.01 | 0.04 | 0.15 | |||
| HPLC A2 | 0.04 | −0.04 | −0.09 | −0.09 | ||||
| ELISA A3 | 0.67 * | 0.07 | 0.15 | |||||
| HPLC A3 | 0.09 | 0.17 | ||||||
| ELISA A4 | 0.93 * | |||||||
| HPLC A4 | ||||||||
| Chicken | ||||||||
| ELISA A1 | 0.03 | 0.13 | 0.37 | 0.39 | 0.25 | −0.01 | 0.30 | |
| HPLC A1 | 0.24 | −0.06 | 0.26 | 0.33 | 0.05 | 0.047 | ||
| ELISA A2 | 0.28 | 0.021 | −0.19 | 0.06 | 0.19 | |||
| HPLC A2 | −0.14 | −0.08 | 0.03 | 0.00 | ||||
| ELISA A3 | 0.69 * | 0.22 | 0.56 | |||||
| HPLC A3 | 0.14 | 0.27 | ||||||
| ELISA A4 | 0.61 * | |||||||
| HPLC A4 | ||||||||
| Pork | ||||||||
| ELISA A1 | 0.04 | −0.11 | −0.06 | −0.05 | −0.08 | 0.01 | −0.05 | |
| HPLC A1 | −0.12 | −0.07 | −0.09 | −0.07 | −0.06 | −0.06 | ||
| ELISA A2 | 0.52 * | 0.10 | 0.10 | −0.09 | −0.1 | |||
| HPLC A2 | 0.11 | 0.34 | −0.04 | −0.06 | ||||
| ELISA A3 | 0.70 * | 0.16 | 0.11 | |||||
| HPLC A3 | −0.11 | −0.11 | ||||||
| ELISA A4 | 0.98 * | |||||||
| HPLC A4 |
NS = non significant, * = Correlation is significant at 0.05 level, A1 = ciprofloxacin, A2 = streptomycin, A3 = sulfanilamide, A4 = tetracycline.