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Kesheng Wu
Jiangxi Institute of Veterinary Drug and Feedstuff Control, Nanchang 330096, China.

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Journal article
Published: 05 June 2019 in Toxins
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In this paper, a highly sensitive plasmonic enzyme-linked immunosorbent assay (pELISA) was developed for the naked-eye detection of fumonisin B1 (FB1). Glucose oxidase (GOx) was used as an alternative to horseradish peroxidase as the carrier of the competing antigen. GOx catalyzed the oxidation of glucose to produce hydrogen peroxide, which acted as a reducing agent to reduce Au3+ to Au on the surface of gold seeds (5 nm), This reaction led to a color change in the solution from colorless to purple, which was observable to the naked eye. Various parameters that could influence the detection performance of pELISA were investigated. The developed method exhibited a considerably high sensitivity for FB1 qualitative naked-eye detection, with a visible cut-off limit of 1.25 ng/mL. Moreover, the proposed pELISA showed a good linear range of 0.31-10 ng/mL with a half maximal inhibitory concentration (IC50) of 1.86 ng/mL, which was approximately 13-fold lower than that of a horseradish peroxidase- (HRP)-based conventional ELISA. Meanwhile, the proposed method was highly specific and accurate. In summary, the new pELISA exhibited acceptable accuracy and precision for sensitive naked-eye detection of FB1 in maize samples and can be applied for the detection of other chemical contaminants.

ACS Style

Shengnan Zhan; Lingyan Zheng; Yaofeng Zhou; Kesheng Wu; Hong Duan; Xiaolin Huang; Yonghua Xiong. A Gold Growth-Based Plasmonic ELISA for the Sensitive Detection of Fumonisin B1 in Maize. Toxins 2019, 11, 323 .

AMA Style

Shengnan Zhan, Lingyan Zheng, Yaofeng Zhou, Kesheng Wu, Hong Duan, Xiaolin Huang, Yonghua Xiong. A Gold Growth-Based Plasmonic ELISA for the Sensitive Detection of Fumonisin B1 in Maize. Toxins. 2019; 11 (6):323.

Chicago/Turabian Style

Shengnan Zhan; Lingyan Zheng; Yaofeng Zhou; Kesheng Wu; Hong Duan; Xiaolin Huang; Yonghua Xiong. 2019. "A Gold Growth-Based Plasmonic ELISA for the Sensitive Detection of Fumonisin B1 in Maize." Toxins 11, no. 6: 323.