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Abstract

Development of Fluorescence Polarisation and Enzyme-Linked Immunosorbent Assays for Danofloxacin Detection In Milk

Author(s): I. A. Shanin, E. A. Zvereva, A. V. Zherdev, S. A. Eremin and B. B. Dzantiev

Two selective immunotechniques based on heterologous approach were proposed and chacterized to detect danofloxacin, a priority veterinary contaminant, in milk. The first technique is fluorescence polarisation immunoassay (PFIA), where a danofloxacin tracer was synthesised with 4-aminomethyl fluorescein, with polyclonal antibodies obtained for a danofloxacin conjugate with cationised bovine serum albumin. The developed system has a detection limit for danofloxacin equal to 13 ng/mL and does not show any cross-reactivity with other 24 tested fluoroquinolones. The second assay format is enzymelinked immunosorbent assay (ELISA) for danofloxacin that is based on the application of the same antibodies and a heterologous solid-phase clinafloxacin conjugate with ovalbumin. The limit of danofloxacin detection for the given ELISA is 0.5 ng/mL, and its strong selectivity to danofloxacin has been also confirmed. The possibility of quantitative control of danofloxacin content in milk has been shown for the developed ELISA technique; the opening percentage was in the range from 83 to 130%.


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Citations : 9398

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  • Google Scholar
  • Open J Gate
  • China National Knowledge Infrastructure (CNKI)
  • Cosmos IF
  • Geneva Foundation for Medical Education and Research
  • ICMJE

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