期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 101, 期 11, 页码 4490-4497出版社
WILEY
DOI: 10.1002/jsfa.11089
关键词
zearalenone; DNA barcode; immunoassay; ultrasensitivity; RT-IPCR
资金
- National Natural Science Foundation of China [31701687, 31700108]
- Natural Science Foundation of Jiangsu Province [BK20170537]
- Senior Talent Scientific Research Initial Funding Project of Jiangsu University [16JDG035]
- Youth Talent Cultivation Program of Jiangsu University
- Priority Academic Program Development of Jiangsu Higher Education Institutions [PAPD-2018-2087]
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment
The proposed RT-IPCR method showed ultrasensitivity, simplicity, low cost and high-throughput for detecting ZEN. It provided a strategy for ultrasensitive detection of small molecules with a practical approach, appealing to significant application prospects.
BACKGROUND: The ultrasensitive monitoring strategy of zearalenone (ZEN) is essential and desirable for food safety and human health. In the present study, a coupling of gold nanoparticles-DNA barcode and direct competitive immunoassay-based real-time polymerase chain reaction signal amplification (RT-IPCR) for ZEN close to the sensitivity of PCR-like levels is described and evaluated. RESULTS: The RT-IPCR benefited from the use of a DNA barcode and RT-PCR detection strategy, thus resulting in ultrasensitive and simple detection for ZEN. Under the optimal RT-IPCR, the linear range of detection was from 0.5 to 1000 pg mL(-1) and the limit of detection was 0.5 pg mL(-1), which was 400-fold lower than the enzyme-linked immunosorbent assay. The detection procedure was simplified and the detection time was shortened. The specificity, accuracy and precision of the RT-IPCR confirmed a high performance. ZEN-positive contamination levels were from 0.056 to 152.12 ng g(-1) by the RT-IPCR, which was demonstrated to be highly reliable by liquid chromatography-tandem mass spectrometry. CONCLUSION: The proposed RT-IPCR could be used as an alternative for detecting ZEN with satisfactory ultrasensitivity, simplicity, low cost and high-throughput. The present study could provide a strategy for the ultrasensitive detection of the small molecule with a simple and practical approach, which has significant appeal and application prospects. (c) 2021 Society of Chemical Industry
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