Progress in Nanomaterials-Based Enzyme and Aptamer Biosensor for the Detection of Organophosphorus Pesticides

Abstract

With the improvement of people's safety awareness, the requirement of pesticide detection is gradually increasing, and many new detection methods toward Organophosphorus pesticide (OPs) has been further developed and applied. Nanomaterials-based biosensors have played an important role in the trace detection of OPs. This article mainly introduces the detection principle of enzymes and aptamers as the identification element of biosensors. Various nanomaterials (i.e., metals and metal oxides, carbon nanotubes, graphene and graphene oxide, quantum dots, metal organic frameworks, molecular imprinted polymers, etc.) possess their unique properties and play different roles in the enzyme and aptamer-based biosensors toward OPs: (a) to produce the optical or electrochemical signal; (b) as a carrier to load the enzyme or aptamer; (c) to enhance the signal response. Besides, the intelligent portable devices provide the possibility to realize the onsite and real-time detection. The limitations of some nanomaterials and the future development are discussed. Finally, the future of enzyme and aptamer-based biosensors has prospected.

Graphical Abstract

Different types of biosensors for the detection of OPs

KEYWORDS:

• Enzyme and aptamer-based biosensors
• nanomaterials
• organophosphorus pesticides；food safe

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 31901766), Financial support from the Talents of High Level Scientific Research Foundation, Qingdao Agricultural University (No.1119014, 1120023), Breeding Plan of Shandong Provincial Qingchuang Research Team (2019), and Postgraduate Innovation Program of Qingdao Agricultural University (No.QNYCX21033)

Disclosure statement

The authors declare no conflicts of interest.