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Ye M, Lin X, Li J, Chen X, Ying D, Wu S, Wang Z, Duan N. Dual-mode aptasensor based on P-CeO 2NR@Mxene and exonuclease I-assisted target recycling for malachite green detection. Food Chem 2024; 451:139399. [PMID: 38663240 DOI: 10.1016/j.foodchem.2024.139399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 05/26/2024]
Abstract
Malachite green (MG) has been illicitly employed in aquaculture as a parasiticide, however, its teratogenic and carcinogenic effects pose a significant human health threat. Herein, a dual-mode colorimetric and electrochemical aptasensor was fabricated for MG detection, capitalizing on the robust catalytic and peroxidase-like activity of P-CeO2NR@Mxene and good capture efficiency of a tetrahedral DNA nanostructure (TDN) designed with multiple aptamers (m-TDN). P-CeO2NR@Mxene-modified complementary DNA (cDNA) served as both colorimetric and electrochemical probe. m-TDN was attached to AuE to capture MG and P-CeO2NR@Mxene/cDNA. The superior aptamer and MG binding to cDNA regulated signals and enabled precise MG quantification. The further introduced Exo I enabled aptamer hydrolysis, releasing MG for further binding rounds, allowing target recycling amplification. Under the optimal conditions, the aptasensor reached an impressively low detection limit 95.4 pM in colorimetric mode and 83.6 fM in electrochemical mode. We believe this dual-mode approach holds promise for veterinary drug residue detection.
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Affiliation(s)
- Mingyue Ye
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xianfeng Lin
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jin Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiaowan Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Dichen Ying
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shijia Wu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Nuo Duan
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
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Li W, Liu F, He Y, Song G. A ratiometric fluorescent sensor based on S-doped BCNO quantum dots and Au nanoclusters combined with 3D-printing portable device for the detection of malachite green. Mikrochim Acta 2024; 191:394. [PMID: 38877187 DOI: 10.1007/s00604-024-06465-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 05/25/2024] [Indexed: 06/16/2024]
Abstract
Sulfur-doped BCNO quantum dots (S-BCNO QDs) emitting green fluorescence were prepared by elemental doping method. The ratiometric fluorescence probe with dual emissions was simply established by mixed S-BCNO QDs with gold nanoclusters (GSH-Au NCs). Because the emission spectrum of Au NCs (donor) at 615 nm overlapped well with the ultraviolet absorption of malachite green (MG), fluorescence resonance energy transfer (FRET) can be achieved. When the concentration of MG increased, the fluorescence intensity (F495) of S-BCNO QDs decreased slowly, while the fluorescence intensity (F615) of Au NCs decreased sharply. The fluorescence intensity ratio of F615/F495 decreased with the increase of MG. By plotting the F615/F495 values against MG concentration, a sensitive and rapid detection of MG was possible with a wide detection range (0.1-50 µM) and a low detection limit of 10 nM. Due to the accompanying fluorescence color change from pink to blue-green, it can be used for visual detection. A three dimensional-printing device utilizing digital image colorimetry to capture color changes through the built-in camera, enables quantitative detection of MG with a good linearity between the values of red/green ratio and MG concentrations at the range 1-50 µM. This sensing platform had a range of advantages, including high cost-effectiveness, portability, ease of operation, and high sensitivity. Furthermore, the sensing platform was successfully applied to the detection of MG in real water sample and fish samples, thereby verifying the reliability and effectiveness of this sensing platform in water quality monitoring and food safety.
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Affiliation(s)
- Wenhao Li
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Fang Liu
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Yu He
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China.
| | - Gongwu Song
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
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Wang J, Yang Y, Shen Q, Shen D, Kang Q. A smartphone-based long optical path colorimetric turntable for selective determination of malachite green and investigation the specific adsorption behavior of the imprinted cavities within molecularly imprinted polymers. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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Abed Almonem KI, El-Ashgar NM, Gahal AA. Applications of potentiometric sensors for the determination of malachite green dye in real samples. SENSORS INTERNATIONAL 2022. [DOI: 10.1016/j.sintl.2022.100186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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