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Miron-Merida ChemRxiv 2020.pdf (1.26 MB)

Aptamer-Based Detection of Fumonisin B1: A Systematic Comparison with Conventional and Other Novel Methods

preprint
submitted on 22.12.2020, 03:46 and posted on 23.12.2020, 06:31 by Vicente Antonio Mirón Mérida, Yun Yun Gong, Francisco Goycoolea
Mycotoxin contamination is a current issue affecting several crops and processed products worldwide. Among the diverse mycotoxin group, fumonisin B1 (FB1) has become a relevant compound because of its adverse effects in the food chain. Conventional analytical methods previously proposed to quantify FB1 comprise LC-MS, HPLC-FLD and ELISA, while novel approaches integrate different sensing platforms and fluorescently labelled agents in combination with antibodies. Nevertheless, such methods could be expensive, time-consuming and require experience. Aptamers (ssDNA) are promising alternatives to overcome some of the drawbacks of conventional analytical methods, their high affinity through specific aptamer-target binding has been exploited in various designs attaining favorable limits of detection (LOD). So far, two aptamers specific to FB1 have been reported, and their modified and shortened sequences have been explored for a successful target quantification. In this critical review spanning the last eight years, we have conducted a systematic comparison based on principal component analysis of the aptamer-based techniques for FB1, compared with chromatographic, immunological and other analytical methods. We have also conducted an in-silico prediction of the folded structure of both aptamers under their reported conditions. The potential of aptasensors for the future development of highly sensitive FB1 testing methods is emphasized.

History

Email Address of Submitting Author

fsvamm@leeds.ac.uk

Institution

University of Leeds

Country

United Kingdom

ORCID For Submitting Author

0000-0001-7813-1690

Declaration of Conflict of Interest

No conflict of interest

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