| Parameter | Control | Different level of RKB fortified biscuits | ||
| 10% RKB | 20% RKB | 30% RKB | ||
| Diameter (cm) | 5.56 ± 0.01 | 5.21 ± 0.06 | 5.18 ± 0.03 | 5.20 ± 0.18 |
| Thickness (cm) | 0.55 ± 0.15 | 0.53 ± 0.04 | 0.55 ± 0.07 | 0.57 ± 0.02 |
| Weight (g) | 4.25 ± 0.08 | 4.58 ± 0.59 | 5.87 ± 0.60 | 6.03 ± 0.38 |
| Spread ratio | 8.92 ± 0.21 | 8.25 ± 0.75 | 8.19 ± 0.62 | 7.86 ± 0.12 |