Table 3.
Retention of iron over time, as percentage from iron concentration in uncooked fortified rice prior to storage (T0).
| 25 °C/60% Humidity | ||||
| Type | T0 | T90 | T180 | T360 |
| Hot extrusion | 100 | 94.7 (±2.2) b | 98.0 (±3.5) b | 89.9 (±6.7) 1 |
| Cold extrusion | 100 | 109.5 (±11.4) a | 109.9 (±5.7) a,c | 100.5 (±10.3) |
| Coated | 100 | 101.1 (±9.3) | 92.9 (±5.0) b | 91.2 (±7.4) |
| 40 °C/75% Humidity | ||||
| Type | T0 | T30 | T90 | T180 |
| Hot extrusion | 100 | 82.1 (±27.1) | 97.6 (±5.7) | 89.4 (±2.0) b |
| Cold extrusion | 100 | 99.4 (±6.2) | 106.3 (±8.2) | 97.7 (±6.8) a |
| Coated | 100 | 100.3 (±13.6) | 99.4 (±6.4) | 91.1 (±4.2) |
Note: All values are means ± SD. 1 significantly different from T0; a significantly different from Hot extrusion; b significantly different from Cold extrusion and c significantly different from Coated.