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Wang P, Xu X, Guo L, Liu L, Kuang H, Xiao J, Xu C. Hapten synthesis and a colloidal gold immunochromatographic strip assay to detect nitrofen and bifenox in fruits. Analyst 2023; 148:2449-2458. [PMID: 37144547 DOI: 10.1039/d3an00358b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In this study, we synthesized two haptens similar in structure to nitrofen (NIT), and screened out five monoclonal antibodies with the ability to recognize NIT and bifenox (BIF) by competitive ELISA, with the lowest IC50 values of 0.87 ng mL-1 and 0.86 ng mL-1, respectively. The antibody 5G7 was selected to be combined with colloidal gold to establish a lateral flow immunochromatographic assay strip. This method was shown to qualitatively and quantitatively detect the residues of NIT and BIF in fruit samples. The visual limits of detection for qualitative detection were 5 μg kg-1 and 10 μg kg-1 for NIT and BIF, respectively. The calculated limits of detection for quantitative detection were 0.75 μg kg-1, 1.77 μg kg-1 and 2.55 μg kg-1 respectively, for nitrofen in orange, apple and grapes, and 3.54 μg kg-1, 4.96 μg kg-1 and 5.26 μg kg-1, respectively, for bifenox. Thus the strip assay could be used for rapid analysis of fruit samples.
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Affiliation(s)
- Peng Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Xinxin Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Lingling Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Jing Xiao
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, People's Republic of China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, China
- International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology, Jiangnan University, China.
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
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Zhang K, Cai H, Lu M, Wei D, Yin J, Ding N, Lai W, Peng J. Quantum dot nanobead immunochromatographic assay based on bispecific monoclonal antibody for the simultaneous detection of aflatoxin B 1 and amantadine. FOOD AGR IMMUNOL 2022. [DOI: 10.1080/09540105.2022.2080188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Kezhuo Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Huadong Cai
- Ganzhou City Animal Husbandry Development & Animal Epidemic Diseases Prevention and Control Center, Ganzhou, People’s Republic of China
| | - Min Lu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Daixian Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Jiaqi Yin
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Nengshui Ding
- State Key Laboratory of Food Safety Technology for Meat Products, Xiamen, People’s Republic of China
- State Key Lab Pig Genet Improvement & Prod Techno, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Juan Peng
- School of Food Science, Nanchang University, Nanchang, People’s Republic of China
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Ang B, Xu X, Xu L, Liu L, Kuang H, Xu C. Development of a colloidal gold strip assay for the detection of total homocysteine in serum samples. Analyst 2022; 147:4348-4355. [DOI: 10.1039/d2an01105k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly sensitive anti-SAH mAb was produced and an LFIA strip was developed to detect tHcy in serum samples after enzymatic hydrolysis.
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Affiliation(s)
- Beijun Ang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Xinxin Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Liguang Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People's Republic of China
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