Bifenthrin hapten, antigen, antibody, preparation method and application thereof

By preparing the bifenthrin hapten and coupling it with a carrier protein, the complexity and high cost of existing bifenthrin detection methods are solved, and a highly specific and sensitive enzyme-linked reaction adsorption analysis method is achieved, which is suitable for the rapid detection of bifenthrin.

CN117105806BActive Publication Date: 2025-09-12GUIZHOU GUOXIN BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202311068459.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-23
Publication Date
2025-09-12
Estimated Expiration
2043-08-23

AI Technical Summary

Technical Problem

Existing methods for detecting cypermethrin mainly rely on instrumental analysis, which has problems such as cumbersome sample processing, high detection costs, expensive equipment, complex operations, and unsuitability for rapid on-site detection. At the same time, the immunogenicity of the antigen in the enzyme-linked reaction adsorption analysis method is not strong, resulting in poor antibody specificity and sensitivity.

Method used

A bifenthrin hapten was prepared by Suzuki reaction using p-aminophenylboronic acid, 3-bromo-2-methylbenzyl alcohol, alkaline reagent and palladium catalyst, followed by coupling with trifluorochlorochrysanthemoyl chloride and succinic anhydride. The obtained hapten was coupled with a carrier protein to prepare a bifenthrin antigen with strong immunogenicity for enzyme-linked reaction adsorption analysis.

Benefits of technology

The specificity and sensitivity of the antibody are improved, efficient and rapid detection of bifenthrin is achieved, the detection cost is reduced, and it is suitable for accurate analysis of large quantities of samples.

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Abstract

The present invention relates to the field of immunoassay technology and provides a bifenthrin hapten, antigen, antibody, preparation method, and application thereof. The bifenthrin hapten provided by the present invention completely retains the molecular structure of bifenthrin. After coupling with a carrier protein, the immunogenicity of the resulting antigen is significantly improved, and the prepared antibody has stronger specificity and higher sensitivity. The results of the examples show that the bifenthrin hapten provided by the present invention is coupled with a carrier protein, and the resulting antigen, after injection into mice for immunization, produces an antibody titer of 1×10 4 , half inhibitory concentration (IC 50 ) is about 20ppb, and the minimum detection limit of colloidal gold for bifenthrin in dry tobacco leaf samples is about 1.25μg / g.
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