Abstract
A flower-like gold nanoparticles (FGN)-based immunochromatographic test strip (ICS) was developed and used for the first time for the rapid simultaneous detection of fumonisin B1 (FB1) and deoxynivalenol (DON) in Chinese traditional medicine. Several experimental conditions affecting the sensitivity of ICS have been investigated, including the type of FGN, the preparation conditions of FGN-monoclonal antibody (MAb) conjugates, and the process parameters of ICS. Under the optimal experimental conditions, the visual limit of detection was 5.0 ng/mL (corresponding to 50 μg/kg in Chinese traditional medicine samples) for both FB1 and DON, and detection can be completed within 5 min. In addition, the natural samples were analyzed using high-performance liquid chromatography (HPLC) or enzyme-linked immunosorbent assay (ELISA), and the results of these methods showed good correlation with those obtained using ICS. The procedure using FGN-based simultaneous ICS was sensitive, rapid, and convenient for on-site detection of a large number of samples.
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