Figure 2.

Selectivity of the aptameric assay system toward ochratoxin A (OTA) against other mycotoxins (OTB, ochratoxin B; AFB1, aflatoxin B1; AFM1, aflatoxin M1; PAT, patulin) at the same concentration (2 µM). The blank signal (aptabeacon in absence of OTA) was subtracted to all samples. (A) Instrument screen; (B) toxins’ peak areas. Each bar represents the average value of three independent experiments (with three technical replicates each) with error bars indicating standard error of the mean (SEM). Significant differences (p ≤ 0.05) were identified with the Duncan’s Multiple Range Test: bars with different letters are significantly different.