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Development of Fluorescent Immunochromatographic Test Strip for Qualitative and Quantitative Detection of Zearalenone

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Abstract

Zearalenone (ZEN), which is usually generated by Fusarium species, is common contamination of corn. ZEN induces estrogen effects and disrupts the reproductive system of humans and animals. Herein, we established a method of quantum dots (QDs) immunochromatographic test strips for the detection of ZEN. In this method, QDs (Q2605, G2701A) and anti-ZEN monoclonal antibodies were conjugated by carbodiimide. The control line and test line of test strips were sprayed with staphylococcal protein A and ZEN-BSA, respectively. The standard curve equation of quantitative detection was y = 0.3958x + 0.3233 (R2 = 0.9914). The limit of detection and 50% comparative inhibition (IC50) were 0.273 ng/mL and 2.792 ng/mL, respectively. The test strips showed a linear range of detection (0.488–15.996 ng/mL). In the intra-assay, recovery ranged from 85.62 to 98.57% and the coefficient of variation (CV) was less than 5.53%. In the inter-assay, it ranged from 84.43 to 100.54% with a CV lower than 8.79%. Briefly, the test strips were established and could be used as a rapid and sensitive method for the detection of ZEN in corn.

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All data generated or analyzed during this study are included in this published article.

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Funding

This study was supported by a grant from the National Key Research and Development Program of China (2019YFC1604501).

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All authors contributed to the study conception and design; project management: Aiping Wang; experiment and analysis: Qingbao Yang and Hongliang Liu; writing manuscript: Qingbao Yang, Yankai Liu, and Yumei Chen; revising: Qingbao Yang, Jingming Zhou, Yanhua Qi, and Chao Liang; final approval: all authors.

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Correspondence to Aiping Wang.

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Yang, Q., Qi, Y., Zhou, J. et al. Development of Fluorescent Immunochromatographic Test Strip for Qualitative and Quantitative Detection of Zearalenone. Food Anal. Methods 15, 2547–2557 (2022). https://doi.org/10.1007/s12161-022-02295-2

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  • DOI: https://doi.org/10.1007/s12161-022-02295-2

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