Demonstrates rapid detection of nitroxynil and oxyclozanide in food and environmental samples, implying effective monitoring for safety.
The widely used deworming drugs nitroxynil (NIT) and oxyclozanide (OXY) pose potential risks to the ecological environment and human health, necessitating a sensitive and rapid detection method. In this study, two novel haptens targeting OXY and NIT, respectively, were designed and synthesized, with their structural validity evaluated by computer simulation. Through animal immunization and cell fusion, monoclonal antibodies (OXY-1A4 and NIT-2F12) were obtained, with half-maximal inhibitory concentrations of 1.13 ng/mL and 0.23 ng/mL, respectively. Based on this, a multiplex gold nanoparticle-based immunochromatographic assay (multi-AuNPs-ICA) was established for simultaneous detection of OXY and NIT in wastewater, milk, and beef. Visual and calculated limits of detection ranged from 2 to 20 ng/mL and 0.37-7.16 ng/mL, respectively. Spiked recovery rates in wastewater, milk, and beef samples were 102.6%-110.5%, 90.4%-115.6%, and 86.9%-117.7%, respectively. These were highly consistent with instrumental methods, confirming the reliability of multi-AuNPs-ICA and its significant potential for on-site rapid screening.
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Liu et al. (2026) studied this question.
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