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 <i>in-silico</i> 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.