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The comparison of this aptasensor with the standard culture method for detection of E. coli O157 : H7 at the concentrations of 101-104 CFU/mL (N=3)
| E. coli concentration detected by culture (C1, CFU/mL) | E. coli concentration detected by this aptasensor (C2, CFU/mL) | Relative standard deviation* (RSD, %) |
|---|---|---|
| 7.6×101 | 6.3×101 | 4.3% |
| 2.7×102 | 2.5×102 | 1.4% |
| 2.3×103 | 1.8×103 | 3.2% |
| 5.4×104 | 6.9×104 | 2.2% |
*: RSD= |lg(C1)-lg(C2)|/lg(C1) x 100%
