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Zhao Y, Chen W, Fang H, Zhang J, Wu S, Yang H, Zhou Y. Ratiometric fluorescence immunoassay based on silver nanoclusters and calcein-Ce 3+ for detecting ochratoxin A. Talanta 2024; 269:125470. [PMID: 38011811 DOI: 10.1016/j.talanta.2023.125470] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/30/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
Ochratoxin A (OTA), a dangerous mycotoxin, is found in many crops. It is essential to create sensitive OTA detection techniques to ensure food safety. Based on the principle of p-nitrophenol (PNP) quenched the fluorescence of bovine serum albumin silver nanocluster (BSA-AgNCs) through an internal filtering effect, and phosphate activated fluorescence of calcein-Ce3+ system, a ratiometric fluorescence immunoassay for OTA detection was developed. In this strategy, the value of F518/F640 was used as a signal for response of OTA concentration. The detection range of this strategy was 0.625-25 ng/mL, the limit of detection (LOD) was 0.04 ng/mL. This new immunoassay offered a brand-new platform for detecting OTA.
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Affiliation(s)
- Yanan Zhao
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Wang Chen
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Huajuan Fang
- College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Junxiang Zhang
- College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Shixiang Wu
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China
| | - Hualin Yang
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China; College of Life Science, Yangtze University, Jingzhou, 434025, People's Republic of China.
| | - Yu Zhou
- College of Animal Science and Technology, Yangtze University, Jingzhou, 434025, People's Republic of China.
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Li H, Yang J, Han R, Wang Y, Han X, Wang S, Pan M. Magnetic-fluorescent immunosensing platform applying AuNPs heterogeneous MIL-53(Al) composite for efficient detection of zearalenone. Food Chem 2024; 433:137369. [PMID: 37683484 DOI: 10.1016/j.foodchem.2023.137369] [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: 02/13/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023]
Abstract
Rapid, sensitive, specific and stable detection of mycotoxin in food remains an extremely crucial issue. Herein, a magnetic-fluorescent immunosensing platform for the detection of zearalenone (ZEN) was proposed. The platform utilized Au nanoparticles (AuNPs) heterogeneous fluorescent metal-organic framework (MIL-53(Al)@AuNPs) labeled with ZEN-bovine serum albumin (ZEN-BSA) as signal probe and ZEN mono-antibodies coupled with magnetic NPs (MNPs-mAbs) as capture probe. Specifically, the heterogenization of AuNPs on the MIL-53(Al) surface improved its biocompatibility, and facilitated the loading of ZEN-BSA conjugates. The MNPs-mAbs could rapidly capture the target ZEN, simplify the immunoassay process and further improve the detection efficiency. The established competitive magnetic-fluorescent immunosensing platform had a wider linear response to ZEN in the range of 0.001-100 ng/mL with a lower limit of detection (LOD) at 0.0035 ng/mL, and could finish the whole detection process within 20 min, showing great potential for rapid and sensitive detection of food contaminants.
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Affiliation(s)
- Huilin Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Ran Han
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Yueyao Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Xintong Han
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
| | - Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
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Qiu T, Zhang H, Lei H, Zhang L, Zhang Y, Shen X, Xu B, Zhu J, Xiao W, Zheng J, Chen J. Preparation of Anti-Zearalenone IgY and Development of an Indirect Competitive ELISA Method for the Measurement of Zearalenone in Post-Fermented Tea. Foods 2023; 12:4478. [PMID: 38137282 PMCID: PMC10742412 DOI: 10.3390/foods12244478] [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: 11/07/2023] [Revised: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Post-fermented tea (PFT) is one of the most commonly consumed beverages worldwide. Rapid microbial growth and significant changes in the microbial composition of PFT during processing and storage pose a potential risk of contamination with mycotoxins such as zearalenone (ZEN). Screening for ZEN contamination in a simple, rapid, and inexpensive manner is required to ensure that PFT is safe for consumption. To monitor ZEN in PFT, ZEN was conjugated with bovine serum albumin to prepare egg yolk immunoglobulins (IgY). A specific indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) based on IgY was developed and validated. ZEN was extracted with acetonitrile and water (50:50, v/v) containing 5% acetic acid and purified using a mixture of primary and secondary amines and graphitized carbon black to remove matrix interference from the PFT samples. Under optimal conditions, the linear range of this assay was 13.8-508.9 ng mL-1, the limit of detection was 9.3 ng mL-1, and the half-maximal inhibitory concentration was 83.8 ng mL-1. Cross-reactivity was negligible, and the assay was specific for ZEN-related molecules. The recovery rate of ZEN in the control blanks of PFT samples spiked with a defined concentration of ZEN of 89.5% to 98.0%. The recovery and accuracy of the method were qualified for PFT matrices. No significant differences were evident between the results of the actual PFT samples analyzed by high-performance liquid chromatography and ic-ELISA. The collective data indicate that the developed ic-ELISA can be used for the rapid and simple detection of ZEN in PFT products.
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Affiliation(s)
- Taotao Qiu
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Huayi Zhang
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (H.L.); (Y.Z.); (X.S.)
| | - Lin Zhang
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Yaqiong Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (H.L.); (Y.Z.); (X.S.)
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (H.L.); (Y.Z.); (X.S.)
| | - Biyun Xu
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Jialin Zhu
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Wentao Xiao
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Jixu Zheng
- College of Physical Education and Health, Guangxi Normal University, Guilin 541004, China; (T.Q.); (H.Z.); (L.Z.); (B.X.); (J.Z.); (W.X.); (J.Z.)
| | - Jiahong Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (H.L.); (Y.Z.); (X.S.)
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