Skip to main content
Log in

Aptamer labeled nanozyme-based ELISA for ampicillin residue detection in milk

  • Original Paper
  • Published:
Chemical Papers Aims and scope Submit manuscript

Abstract

This study aimed to develop an aptamer labeled nanozyme-based ELISA method based on ampicillin/aptamer and peroxidase activity of gold nanoparticles (AuNPs) to detect ampicillin residue in milk. The commercially available ampicillin conjugated bovine serum albumin (ampicillin/BSA) was used as a ‘coating antigen.’ The aptamers labeled with AuNPs (Au-apt) were prepared and used as an ‘enzyme-labeled antibody’ to detect ampicillin in milk. A positive correlation was observed between the amounts of ampicillin residue and competitively bounded Au-apt. The remaining Au-apt bounded ampicillin/BSA was negatively associated with UV absorption values. The materials are easy to be prepared in the present method. This study simplified the material preparation and demonstrated high a selectivity, a low detection limit, and a good batch stability. The method developed in this study has the potential to improve the monitoring method of ampicillin residue in milk.

Graphical abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Yuan Cheng.

Ethics declarations

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhang, X., Sun, W. & Cheng, Y. Aptamer labeled nanozyme-based ELISA for ampicillin residue detection in milk. Chem. Pap. 76, 3077–3085 (2022). https://doi.org/10.1007/s11696-022-02084-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11696-022-02084-5

Keywords

Navigation