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Luo L, Kang RY, He ZX, Jia BZ, Chen ZJ, Deng H, Xu ZL. Development of broad-spectrum immunoassay with monoclonal antibody to detect five eugenols and study of their molecular recognition mechanism. Food Chem X 2024; 22:101255. [PMID: 38444558 PMCID: PMC10912603 DOI: 10.1016/j.fochx.2024.101255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/13/2024] [Accepted: 02/25/2024] [Indexed: 03/07/2024] Open
Abstract
In this study, three eugenol fragment-containing haptens were synthesized, and a monoclonal antibody (mAb) selective for five commonly-found eugenol compounds (EUGs, i.e., eugenol, isoeugenol, methyl eugenol, methyl isoeugenol, and acetyl isoeugenol) was obtained. Based on this mAb, a broad-spectrum indirect competitive ELISA for high-throughput detection of five EUGs was developed. The detection limits for eugenol, isoeugenol, methyl eugenol, methyl isoeugenol and acetyl isoeugenol in both tilapia and shrimp samples were 25.3/ 50.6 μg/kg, 0.075/0.15 μg/kg, 0.48/0.96 μg/kg, 0.16/0.32 μg/kg, and 18.16/36.32 μg/kg, respectively. The recoveries for five EUGs ranged from 80.4 to 114.0 % with a coefficient of variation less than 11.5 %. Moreover, homology modelling and molecular docking were conducted to elucidate the interactions mechanism of mAb-EUGs. The work provides a promising tool for high-throughput screening of EUGs in aquatic products, which can serve as a benchmark for designing haptens and developing immunoassays for other small molecules.
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Affiliation(s)
- Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
- Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Heyuan 517000, China
| | - Rui-Yao Kang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhen-Xi He
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Bao-Zhu Jia
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China
| | - Zi-Jian Chen
- School of Food & Pharmaceutical Engineering, Zhaoqing University, Zhaoqing 526061, China
| | - Hao Deng
- Key Laboratory of Tropical Fruit and Vegetable Cold-chain of Hainan Province / Institute of Agro-products Processing and Design, Hainan Academy of Agricultural Sciences, Haikou 570100, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
- Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Heyuan 517000, China
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Luo L, He ZX, Jia BZ, Kang RY, Zhang WF, Huang RM, Xu ZL. Gold nanocluster-based ratiometric fluorescence immunoassay for broad-spectrum screening of five eugenols. Anal Chim Acta 2024; 1310:342723. [PMID: 38811138 DOI: 10.1016/j.aca.2024.342723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Eugenol compounds (EUGs), which share chemical similarities with eugenol, belong to a group of phenolic compounds primarily found in clove oil. They are highly valued by fish dealers due to their exceptional anesthetic properties, playing a crucial role in reducing disease incidence and mortality during the transportation of live fish. Despite their widespread use, the safety of EUGs remains a contentious topic, raising concerns about the safety of aquatic products. This underscores the need for efficient and sensitive analytical methods for detecting EUGs. RESULTS Nanomaterial-based ratiometric fluorescence immunoassay has gained increasing attention due to its integration of the immunoassay's excellent specificity and compatibility for high-throughput analysis, coupled with the exceptional sensitivity and anti-interference capabilities of ratiometric fluorescence assays. In this study, we developed a sensitive ratiometric fluorescence immunoassay for screening five EUGs. This method employs a broad-specificity monoclonal antibody (mAb) as a recognition reagent, selective for five EUGs. It leverages the horseradish peroxidase (HRP)-triggered formation of fluorescent 2,3-diaminophenazine (DAP) and the quenching of fluorescent gold clusters (Au NCs) for detection. The assay's detection limits for eugenol, isoeugenol, eugenol methyl eugenol, methyl isoeugenol, and acetyl isoeugenol in tilapia fish and shrimp were found to be 9.8/19.5 μg/kg, 0.11/0.22 μg/kg, 19/36 Tilapia ng/kg, 8/16 ng/kg, and 3.0/6.1 μg/kg, respectively. Furthermore, when testing spiked Tilapia fish and shrimp samples, recoveries ranging from 84.1 to 111.9 %, with the coefficients of variation staying below 7.1 % was achieved. SIGNIFICANCE This work introduces an easy-to-use, broad-specificity, and highly sensitive method for the screening of five EUGs at a pg/mL level, which not only provides a high-throughput strategy for screening eugenol-type fish anesthetics in aquatic products, but also can serve as a benchmark for developing immunoassays for other small molecular pollutants, rendering potent technological support for guarding food safety and human health.
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Affiliation(s)
- Lin Luo
- Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Guangdong Provincial Engineering Research Center of Rapid Testing Instrument for Food Nutrition and Safety, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou, 510070, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zhen-Xi He
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Bao-Zhu Jia
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou, 510303, China; School of Health Sciences Research, Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Rui-Yao Kang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Wen-Feng Zhang
- Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Guangdong Provincial Engineering Research Center of Rapid Testing Instrument for Food Nutrition and Safety, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou, 510070, China.
| | - Ri-Ming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
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Li W, Yang X, Wang D, Xie J, Wang S, Rong Z. A handheld fluorescent lateral flow immunoassay platform for highly sensitive point-of-care detection of methamphetamine and tramadol. Talanta 2024; 277:126438. [PMID: 38897012 DOI: 10.1016/j.talanta.2024.126438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/23/2024] [Accepted: 06/14/2024] [Indexed: 06/21/2024]
Abstract
The escalating issue of drug abuse poses a significant threat to public health and societal stability worldwide. An on-site drug detection platform is vital for combating drug abuse and trafficking, as it eliminates the need for additional tools, extensive processes, or specialized training. Therefore, it is imperative to develop a fast, sensitive, non-invasive, and reliable multiplex drug testing platform. In this study, we have presented a silica core@dual quantum dot-shell nanocomposite (SI/DQD)-based fluorescent lateral flow immunoassay (LFIA) platform for the highly sensitive and simultaneous point-of-care (POC) detection of methamphetamine (MET) and tramadol (TR). A 3D-printed attachment was designed to integrate optical and electrical components, facilitating the miniaturization of the instrument and reducing both cost and complexity. The device's advanced hardware and effective fluorescence extraction algorithm with waveform reconstruction enable swift, automatic noise reduction and data analysis. SI/DQD nanocomposites were utilized as fluorescent nanotags in the LFIA strips due to their outstanding luminous efficiency and robustness. This LFIA platform achieves impressive detection limits (LODs) of 0.11 ng mL-1 for MET and 0.017 ng mL-1 for TR. The method has also successfully detected MET and TR in complex biological samples, demonstrating its practical application capabilities. The proposed fluorescent LFIA platform, based on SI/DQD technology, holds significant promise for the swift and accurate POC detection of these substances. Its affordability, compact size, and excellent analytical performance make it suitable for on-site drug testing, including at borders and roadside checks, and open up new possibilities for the design and implementation of drug testing methods.
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Affiliation(s)
- Weijia Li
- State Key Laboratory of Toxicology and Medical Countermeasures, and Laboratory of Toxicant Analysis, Institute of Toxicology and Pharmacology, Beijing, 100850, China
| | | | - Dongfeng Wang
- Bioinformatics Center of AMMS, Beijing, 100850, China
| | - Jianwei Xie
- State Key Laboratory of Toxicology and Medical Countermeasures, and Laboratory of Toxicant Analysis, Institute of Toxicology and Pharmacology, Beijing, 100850, China.
| | - Shengqi Wang
- Bioinformatics Center of AMMS, Beijing, 100850, China.
| | - Zhen Rong
- Bioinformatics Center of AMMS, Beijing, 100850, China.
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Sha O, Wu Y, Dai X, Li H, Xu Y, Wang Z, Zhang P. Reusable magnetic molecular imprinted polymers based on magnetic graphene oxide for selective identification and detection of eugenol in environmental water samples. ANAL SCI 2024:10.1007/s44211-024-00601-y. [PMID: 38795278 DOI: 10.1007/s44211-024-00601-y] [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: 03/20/2024] [Accepted: 05/13/2024] [Indexed: 05/27/2024]
Abstract
In this study, a reliable method for determining eugenol content in environmental water samples was established by combining magnetic solid-phase extraction with high-performance liquid chromatography. Magnetic molecular imprinted polymers MGO@MIPs were prepared through surface molecular imprinting technique with eugenol as the template molecule. The material displayed good superparamagnetic properties and magnetic responsiveness in favor of rapid separation. The adsorption properties of MGO@MIPs for eugenol were evaluated through adsorption kinetics and selectivity experiments. MGO@MIPs were found to have favorable reusability and obvious selectivity for eugenol. In addition, adsorption and elution conditions were investigated. Under optimal conditions, a linear relationship was obtained between the concentration of eugenol and its peak area in the range of 0.02-5 mg/L (R2 = 0.9998) and the limit of detection was 4.0 × 10-6 mg/mL. The performance of the established method was assessed with the average recovery of 96.59-102.20% and the relative standard deviation (RSD) below 3.5%. The application of this method provides a new perspective for the separation, enrichment and detection of eugenol in water environment.
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Affiliation(s)
- Ou Sha
- Department of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China.
| | - Yunfan Wu
- Department of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
| | - Xincheng Dai
- Department of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
| | - Huiwen Li
- Department of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
| | - Yuan Xu
- Department of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
| | - Ziwen Wang
- Department of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
| | - Pu Zhang
- Department of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, People's Republic of China
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Li J, Jiang L, Shu Y, Song S, Xu L, Kuang H, Xu C, Guo L. Quantitative immunochromatographic assay for rapid and cost-effective on-site detection of benzo[a]pyrene in oilfield chemicals. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134100. [PMID: 38522202 DOI: 10.1016/j.jhazmat.2024.134100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 03/13/2024] [Accepted: 03/19/2024] [Indexed: 03/26/2024]
Abstract
Contamination of oilfield chemicals (OFCs) by benzo[a]pyrene (B[a]P) is increasingly becoming a severe environmental security issue. There is an urgent need to develop a rapid and accurate method for B[a]P detection in OFCs. In this study, B[a]P hapten was designed using computer aided molecular design. A high-affinity, specific, and matrix-insensitive monoclonal antibody (mAb) with IC50 values of 6.77 ng/mL was obtained. Based on this mAb, we developed a rapid gold nanoparticle-based immunochromatographic strip assay (GICA) with double T-line mode for on-site detection of B[a]P in OFCs samples. The GICA exhibited excellent detection performance in OFCs samples with strong acidity, strong alkalinity, and deep color. Under optimal conditions, the proposed method detected B[a]P in OFCs at 0.42-300 mg/kg, and limit of detection was 0.23-1.07 mg/kg. The recovery rate was 88-106% with a coefficient of variation of 1.46-6.35%. Confirmed by natural positive OFCs samples and high-performance liquid chromatography, this GICA is accurate and reliable, with great potential for rapid and cost-effective on-site detection.
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Affiliation(s)
- Jinyan Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Luming Jiang
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing 10083, China; Key Laboratory of Oilfield Chemicals, CNPC, Beijing 10083, China
| | - Yong Shu
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing 10083, China; Key Laboratory of Oilfield Chemicals, CNPC, Beijing 10083, China
| | - Shanshan Song
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Liguang Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hua Kuang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Lingling Guo
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Zhang Q, Wu A, Li J, Liu L, Kuang H, Xu C, Guo L. Development of an ic-ELISA and immunochromatographic assay strip for the rapid detection of chloridazon in oranges and celery. Analyst 2024; 149:467-474. [PMID: 38044701 DOI: 10.1039/d3an01785k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Chloridazon (CLZ) is a selective herbicide used in the control of annual broadleaf weeds. The misuse or abuse of CLZ may result in the accumulation of CLZ in crops and water, which can pose a risk to human health. In this study, a hapten of CLZ with three carbon spacer arms was designed and a highly sensitive and specific antibody against CLZ was prepared with a half-maximal inhibitory concentration of 0.630 ng mL-1 and a linear range of 0.181-2.195 ng mL-1.Based on this antibody, we developed an immunochromatographic assay (ICA) strip for the detection of CLZ in oranges and celery. Under optimized conditions, the visual limit of detection was 2 ng mL-1 and 10 ng mL-1 in oranges and celery, respectively, and the cut-off value was 50 ng mL-1. In CLZ-spiked samples and the recovery test, the results of the ICA strip were consistent with those of indirect competitive enzyme-linked immunosorbent assay (ic-ELISA). Therefore, the ICA strip developed in our study represents an efficient and reliable method for the rapid screening of CLZ in oranges and celery.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Aihong Wu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Jinyan Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Hua Kuang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Lingling Guo
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, China.
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
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Wang D, Wang Y, Liu B, Ni L, Zhong J, Xie J, Wang Z. Determination of Eugenol Residues in Fish Tissue, Transport, and Temporary Water of Aquatic Product by Gas Chromatography-Tandem Mass Spectrometry with Application of the Electrospun Nanofibrous Membrane. Foods 2024; 13:238. [PMID: 38254539 PMCID: PMC10814870 DOI: 10.3390/foods13020238] [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: 12/03/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Using gas chromatography-tandem mass spectrometry and electrospun nanofibrous membrane, we developed and validated a simple, rapid, and sensitive methodology for quantifying eugenol residues in fish tissue and water samples. Fish tissue extract and water samples (315 samples) collected from three southeastern China provinces (Shanghai, Zhejiang, and Fujian), originating from eight provinces of Zhejiang, Jiangsu, Shandong, Guangdong, Fujian, Anhui, Shanghai, and Jiangxi, from April 2021 to April 2023 were filtered with an electrospun nanofiber membrane, extracted with trichloromethane/n-hexane, and directly concentrated to dry after simple purification. An internal standard of p-terphenyl in n-hexane and 5-µL injection volumes of the solutions was used to analyze eugenol via internal calibration with a minimum concentration of 0.5 µg/L in water samples and 0.1 µg/kg in aquatic product samples. The highest amount of eugenol was detected in Fujian province, possibly due to the higher temperature during transportation, while the lowest amount was found in Shanghai, which mainly uses temporary fish-culture devices. This is a fast, inexpensive, and effective method for testing large quantities of fish water and meat samples.
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Affiliation(s)
- Deqian Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
| | - Yunning Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
| | - Bolin Liu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
| | - Ling Ni
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
| | - Jian Zhong
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai Institute for Pediatric Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
- Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China
| | - Zhengquan Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (D.W.); (Y.W.); (B.L.); (L.N.); (J.Z.); (J.X.)
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
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Chen Y, Zhang H, Ding H, Sun M, Xu C, Guo L. Development of a gold nanoparticle-based lateral flow immunoassay for the fast detection of diafenthiuron in cabbage and apples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023. [PMID: 37401441 DOI: 10.1039/d3ay00562c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Due to its unique insecticidal and acaricidal mechanism of action, and ability to mix with most insecticides and fungicides, diafenthiuron (DIAF) is widely used in the cultivation of fruits and vegetables. However, this insecticide can cause unacceptable harm to organisms, making the detection of DIAF residues in fruits and vegetables crucial. In this study, a novel hapten based on the structure of DIAF was utilized to prepare a monoclonal antibody (mAb) with high specificity and sensitivity. The half maximum inhibitory concentration (IC50) of the anti-DIAF mAb was 20.96 μg kg-1 as determined by ic-ELISA and little cross-reactivity with other analogues. Next, a GNP-based lateral flow immunoassay (LFIA) was developed to detect DIAF in cabbages and apples. The optimized LFIA, for cabbage samples, showed a visual limit of detection (vLOD), cut-off value and calculated limit of detection (cLOD) of 0.1 mg kg-1, 10 mg kg-1 and 1.5 μg kg-1, respectively, and for apples 0.1 mg kg-1, 5 mg kg-1 and 3.4 μg kg-1, respectively. Recovery rates in cabbage and apples were 89.4-105.0% and 105.3-112.0%, with a coefficient of variation of 2.73-5.71% and 2.15-7.56%, respectively. These results indicated that the established LFIA based on our anti-DIAF mAb was a reliable method for in situ rapid detection of DIAF in cabbage and apple samples.
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Affiliation(s)
- Yunhui Chen
- International Joint Research Laboratory for Biointerface and Biodetection, School, of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Hongyu Zhang
- International Joint Research Laboratory for Biointerface and Biodetection, School, of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Hongliu Ding
- Key Laboratory of Food Safety Rapid Detection Technology and Product Evaluation for Market Regulation of Jiangsu Province, Suzhou, Jiangsu, 215133, China
| | - Maozhong Sun
- International Joint Research Laboratory for Biointerface and Biodetection, School, of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, School, of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Lingling Guo
- International Joint Research Laboratory for Biointerface and Biodetection, School, of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
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Chen X, Wei J, Li J, Jiao T, Wang L, Chen Q. Rapid detection of eugenol in perch utilizing electrochemical method by transition metal substituted polyoxometalates. Food Chem 2023; 426:136584. [PMID: 37329800 DOI: 10.1016/j.foodchem.2023.136584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/19/2023]
Abstract
Food safety concerns caused by the application of spice allergens to fish anaesthesia. In this paper, a chitosan-reduced graphene oxide/polyoxometalates/poly-l-lysine (CS-rGO/P2Mo17Cu/PLL) modified electrode was constructed by electrodeposition and successfully applied to the quantitative analysis of eugenol (EU). The detection limit was 0.4490 μM in the linear range of 2x10-6 M to 1.4x10-5 M. It was applied to the determination of EU residues in kidney, liver and meat tissues of perch with recoveries ranging from 85.43 to 93.60%. Besides, the electrodes demonstrate high stability (2.56% drop in current value after 70 days at room temperature), high reproducibility (RSD of 4.87% for 6 parallel electrodes) and extremely fast response time. This study provided a new material for the electrochemical detection of EU.
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Affiliation(s)
- Xiaowen Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, PR China
| | - Jie Wei
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, PR China
| | - Jiaxin Li
- School of Life Sciences, Jilin University, Changchun 130012, PR China
| | - Tianhui Jiao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, PR China
| | - Li Wang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, PR China.
| | - Quansheng Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, PR China.
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