Table 4.
Selenium species concentration of pre-cooking and cooked cereals and soybeans.
| Samples | Cooking | SeCys2 (Se, mg/kg) |
SeMeCys (Se, mg/kg) |
Selenite (Se, mg/kg) |
SeMet (Se, mg/kg) |
|---|---|---|---|---|---|
| Wheat | Pre-cooking | 0.67 ± 0.13 | 0.14 ± 0.08 | ND * | 9.6 ± 0.1 |
| Steaming | 0.57 ± 0.12 | 0.09 ± 0.05 | ND | 8.3 ± 0.2 | |
| Boiling | ND | ND | ND | 7.3 ± 0.1 | |
| Frying | 0.29 ± 0.03 | 0.10 ± 0.03 | ND | 9.3 ± 0.1 | |
| Corn A | Pre-cooking | 0.72 ± 0.22 | 0.21 ± 0.05 | ND | 20.5 ± 2.5 |
| Steaming | 0.43 ± 0.03 | 0.18 ± 0.02 | ND | 19.6 ± 0.2 | |
| Boiling | ND | ND | ND | 17.7 ± 1.1 | |
| Corn B | Pre-cooking | 0.12 ± 0.02 | 0.11 ± 0.03 | ND | 2.2 ± 0.4 |
| Steaming | 0.08 ± 0.02 | 0.08 ± 0.01 | ND | 2.0 ± 0.1 | |
| Boiling | ND | ND | ND | 1.7 ± 0.1 | |
| Soybean A | Pre-cooking | 7.7 ± 0.9 | 1.4 ± 0.1 | 3.7 ± 0.9 | 55.7 ± 0.2 |
| Milking | 3.2 ± 0.5 | 0.79 ± 0.27 | ND | 29.6 ± 1.1 | |
| Soybean B | Pre-cooking | 0.64 ± 0.13 | 1.1 ± 0.1 | 0.35 ± 0.04 | 25.7 ± 3.5 |
| Milking | 0.21 ± 0.03 | 0.29 ± 0.16 | ND | 16.6 ± 2.9 |
Results are expressed as mean value ± standard deviation (n = 3). * ND means no n-detectable. All the Se species concentrations of cooked cereals and soybeans were calculated by the pre-cooked dry sample matrix weight.