Research Article
Highly Sensitive Immunochromatographic Identification of Tetracycline Antibiotics in Milk
Table 2
The dependence of TC immunochromatographic assay on IgG-GNP conjugate concentration.
| OD520 of the conjugate | Limit of TC detection, ng/mL | Maximal coloration, RU | Background coloration, RU |
| 2 | 0.16 ± 0.06 | 11,100 ± 568 | 270 ± 58 | 4 | 0.1 ± 0.02 | 11,600 ± 251 | 170 ± 25 | 8 | 1.8 ± 0.18 | 12,000 ± 485 | 5,000 ± 186 |
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