Table 1. Results obtained by the non-enzymatic electrochemical immunoassay and commercial AFB1 ELISA kit (MaxSignal AFB1 ELISA) for spiked or naturally contaminated peanut samples.
Type | No. | Method; concentration (ng mL–1, n = 3)a |
||
Electrochemical immunoassay | AFB1 ELISA kit | texp | ||
spiked peanut | 1 | 0.008 ± 0.001 | No detection | No application |
2 | 0.54 ± 0.12 | 0.51 ± 0.32 | 0.14 | |
3 | 1.32 ± 0.21 | 1.39 ± 0.21 | 0.41 | |
4 | 4.67 ± 0.89 | 4.51 ± 0.43 | 0.28 | |
5 | 9.32 ± 0.76 | 9.65 ± 0.89 | 0.49 | |
naturally contaminated peanut | 1 | 4.32 ± 0.88 | 4.12 ± 1.01 | 0.26 |
2 | 9.54 ± 1.32 | 9.76 ± 1.13 | 0.22 | |
3 | 6.45 ± 1.12 | 6.23 ± 0.89 | 0.26 | |
4 | 3.21 ± 0.89 | 3.11 ± 0.78 | 0.15 | |
5 | 10.3 ± 1.73 | 10.9 ± 1.32 | 0.45 |
aEach sample was determined in triplicate, and the high-concentration AFB1 sample was assayed with an appropriate dilution.