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Mao X, Wang Y, Jiang L, Zhang H, Zhao Y, Liu P, Liu J, Hammock BD, Zhang C. A Polydopamine-Coated Gold Nanoparticles Quenching Quantum Dots-Based Dual-Readout Lateral Flow Immunoassay for Sensitive Detection of Carbendazim in Agriproducts. Biosensors (Basel) 2022; 12:bios12020083. [PMID: 35200343 PMCID: PMC8869244 DOI: 10.3390/bios12020083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 06/12/2023]
Abstract
In this study, a fluorometric and colorimetric dual-readout lateral flow immunoassay (LFIA) using antibody functionalized polydopamine-coated gold nanoparticles (Au@PDAs) as a probe was developed for the detection of carbendazim (CBD). Colloidal gold nanoparticles (AuNPs) were coated with polydopamines (PDA) by the oxidation of dopamine to synthesize Au@PDA nanoparticles. The Au@PDA nanoparticles mediated ZnCdSe/ZnS quantum dots (QDs) fluorescence quenching and recovery, resulting in a reverse fluorescence enhancement detection format of CBD. The CBD detection was obtained by the competition between the CBD and the immobilized antigen for Au@PDAs labelled antibody binding, resulting in a significant fluorescence increase and colorimetry decrease corresponded to the concentration of CBD. Dual readout modes were incorporated into the LFIA using the colorimetry signal under natural light and the fluorescence signal under UV light. The cut-off value in the mode of the colorimetric signal and fluorometric signal for CBD detection was 0.5 μg/mL and 0.0156 μg/mL, respectively. The sensitivity of LFIA of the fluorescence mode was 32 times higher than that of the colorimetry mode. There was negligible cross reactivity obtained by using LFIA for the determination of thiabendazole, benomyl, thiophanate-methyl, and thiophanate-ethyl. Consistent and satisfactory results have been achieved by comparing the results of Au@PDAs-QDs-LFIA and liquid chromatography-tandem mass spectrometry (LC-MS/MS) testing spiked cucumber and strawberry samples, indicating good reliability of the Au@PDAs-QDs-LFIA.
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Affiliation(s)
- Xinxin Mao
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (X.M.); (L.J.); (J.L.)
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
| | - Yulong Wang
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
| | - Lan Jiang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (X.M.); (L.J.); (J.L.)
| | - Hanxiaoya Zhang
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
| | - Yun Zhao
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
| | - Pengyan Liu
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
| | - Juanjuan Liu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (X.M.); (L.J.); (J.L.)
| | - Bruce D. Hammock
- Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA;
| | - Cunzheng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (X.M.); (L.J.); (J.L.)
- Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Ministry of Agriculture, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.W.); (H.Z.); (Y.Z.); (P.L.)
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Biology and Food Engineering, Jiangsu University, Zhenjiang 212000, China
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