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Article Abstract
A lateral flow chromatography strip (LFS) is a chromatography-based biosensor with advantages of convenient portability, simple operation and rapid detection. In this study, a novel rapid detection technique of aptamer-based chromatography strip was developed and used for the first time for the residue detection of tetracycline antibiotics (TCs) in various milk samples. In this method, gold nanoparticles (AuNPs) modified by TCs specific aptamers were used as probes, and cationic polymers as capture molecules in a test line (T-line). Meanwhile, the analysis of the gray value of the T-line enabled a linear detection range of 1-300 nM and a limit of detection (LOD) of 0.33 nM for quantitative analysis. The biosensor demonstrated high specificity, good stability, and successfully detected tetracyclines in milk samples with recovery rate of 93.60%-106.20%. This method sets a basis for multi-residue antibiotics detection in diverse samples, showing potential for on-site applications.
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| http://dx.doi.org/10.1016/j.foodchem.2024.141743 | DOI Listing |
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