Fluorescent strip sensor for rapid determination of toxins

Libing Wang; Wei Chen; Wenwei Ma; Liqinag Liu; Wei Ma; Yuan Zhao; Yingyue Zhu; Liguang Xu; Hua Kuang; Chuanlai Xu

doi:10.1039/C0CC04032K

Fluorescent strip sensor for rapid determination of toxins†

Libing Wang,‡^ab Wei Chen,‡^a Wenwei Ma,‡^a Liqinag Liu,^a Wei Ma,^a Yuan Zhao,^a Yingyue Zhu,^a Liguang Xu,^a Hua Kuang*^a and Chuanlai Xu*^a

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* Corresponding authors

^a School of Food Science & Technology, State Key Lab of Food Science & Technology, Jiangnan University, Wuxi, PRC
E-mail: khecho@163.com, xcl@jiangnan.edu.cn

^b Hunan Entry–Exit Inspection and Quarantine Bureau, Changsha, PR China

Abstract

Here, we report a simple fluorescent strip sensor based on aptamer–quantum dots technology that can meet toxin monitoring demands using ochratoxin A (OTA) as a model toxin. The limit of the detection (LOD) for the fluorescent strip was 1.9 ng mL⁻¹, while the time needed for the detection is only 10 min; this conforms to the standards of World Health Organization (WHO) or better. Overall functional parameters are also better than the analogous characteristics of gold nanoparticle strips. High selectivity was maintained as well, making them suitable for the samples with complex solution composition.

Chemical Communications

Fluorescent strip sensor for rapid determination of toxins†

Abstract

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Fluorescent strip sensor for rapid determination of toxins

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