期刊
FOOD CHEMISTRY
卷 361, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130103
关键词
Monoclonal antibody; Tenuazonic acid; Open sandwich ELISA; Phage display; V region fragments
资金
- National Key R&D Program of China [2019YFE0116600]
- Key-Area Research and Development Program of Guangdong Province [2019B020211002]
- National Natural Science Foundation of China [31822039]
- Science and Technology Planning Project of Guangzhou City [202102080615]
- Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
The open sandwich enzyme-linked immunosorbent assay (OS-ELISA) has great potential for rapid detection of small molecules compared to traditional methods. An enhanced OS-ELISA for detecting the mycotoxin tenuazonic acid (TeA) showed increased sensitivity and accurate detection in juice, flour, and tomato ketchup samples. The method was validated to be highly accurate using the standard ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS) technique.
Open sandwich enzyme-linked immunosorbent assay (OS-ELISA), a novel noncompetitive immunoassay format, has shown great potential in rapid detection for small molecules compared with traditional competitive format. Here, an enhanced OS-ELISA towards the mycotoxin tenuazonic acid (TeA) was developed for the first time based on heavy chain variable region (VH) and light chain variable region (VL) from the hybridoma cells (3F10) producing anti-TeA monoclonal antibody (mAb). The established OS-ELISA exhibited a limit of detection of 0.08 ng/mL, and was 13 times more sensitive than mAb-based indirect competitive ELISA (ic-ELISA). The proposed assay was also applied to detect TeA contents in juice, flour and tomato ketchup samples with satisfactory recoveries of 87.6%-111.3%. Finally, the great accuracy of the established OS-ELISA method was validated by the standard ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS).
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