Table 4 Comparison of the results of GF-HS-SDME with the Codex method (n = 3, P = 0.95; F = 19; t = 2.78)
Sample | 4-MeI added (µg L−1) | 4-MeI found (µg L−1) | F-value | t-value | |
|---|---|---|---|---|---|
GF-HS-SDME | Codex method | Â | |||
Caramel- 1 | 0.0 | 107.5 ± 1.9 | 99.0 ± 6.7 | 12 | 2.1 |
100.0 | 199.0 ± 4.5 | 204.9 ± 10.7 | 5.7 | − 0.9 | |
Caramel- 2 | 0.0 | 114.4 ± 5.3 | 110.1 ± 11.4 | 4.7 | − 0.6 |
100.0 | 188.2 ± 6.8 | 181.3 ± 2.6 | 7.1 | 1.6 | |
Energy Drink-1 | 0.0 | Not Detected | Not Detected | – | – |
100.0 | 90.6 ± 0.7 | 90.2 ± 1.6 | 5.0 | 0.4 | |
Cola-1 | 0.0 | 97.7 ± 2.1 | 95.0 ± 1.7 | 1.5 | 1.8 |
100.0 | 191.0 ± 1.6 | 188.1 ± 3.3 | 4.3 | 1.4 | |
Instant Coffee -1 | 0.0 | Not Detected | Not Detected | – | – |
100.0 | 95.9 ± 1.4 | 92.7 ± 2.7 | 3.9 | 1.9 | |
Coffee-1 | 0.0 | 34.5 ± 0.8 | 34.0 ± 1.5 | 3.3 | 0.6 |
100.0 | 130.2 ± 2.7 | 127.3 ± 1.1 | 6.4 | 1.7 | |