Table 5.
Differential scanning calorimetric data* for wheat/canna and wheat/konjac composite flours dispersed in deionized water
| Wheat/canna and wheat/konjac ratio | Gelatinization characteristics | ||||
|---|---|---|---|---|---|
| To (°C) | Tp1 (°C) | Tp2 (°C) | Tc (°C) | ΔH (J/g dry starch) | |
| HPWC | |||||
| 100:0 | 57.8 ± 1.5b | 63.9 ± 1.1b | – | 70.3 ± 1.5b | 5.0 ± 0.9d |
| 75:25 | 58.0 ± 3.4b | 63.4 ± 2.4b | 71.8 ± 1.2a | 75.3 ± 1.4a | 8.3 ± 1.1cd |
| 50:50 | 57.8 ± 2.3b | 65.1 ± 3.3 b | 72.4 ± 0.7a | 77.6 ± 1.8a | 10.5 ± 0.9abc |
| 25:75 | 58.1 ± 1.4b | 64.7 ± 2.1b | 71.9 ± 0.7a | 76.9 ± 1.1a | 11.6 ± 1.0ab |
| 0:100 | 68.6 ± 2.7a | 72.5 ± 1.2a | – | 77.7 ± 1.8a | 13.0 ± 1.8a |
| LPWC | |||||
| 100:0 | 60.6 ± 1.8b | 64.1 ± 1.4 b | – | 69.6 ± 2.5b | 5.7 ± 0.8d |
| 75:25 | 60.9 ± 1.4b | 63.6 ± 0.7 b | 71.8 ± 1.4a | 77.9 ± 1.0a | 8.8 ± 1.4bc |
| 50:50 | 59.4 ± 1.8b | 65.8 ± 0.9 b | 72.5 ± 0.8a | 77.3 ± 1.8a | 10.1 ± 0.9abc |
| 25:75 | 61.5 ± 1.7b | 63.5 ± 2.1 b | 72.2 ± 0.6a | 78.0 ± 1.5a | 11.9 ± 1.8a |
| 0:100 | 68.5 ± 2.2a | 73.5 ± 0.8a | – | 77.6 ± 1.5a | 13.1 ± 1.2a |
| HPWK | |||||
| 100:0 | 57.7 ± 1.6bc | 63.9 ± 0.5b | _ | 69.1 ± 0.7 b | 5.0 ± 1.6d |
| 75:25 | 56.7 ± 1.1c | 64.2 ± 1.3b | 69.1 ± 1.5a | 76.9 ± 1.3a | 9.7 ± 0.9c |
| 50:50 | 58.2 ± 3.0bc | 64.4 ± 2.3b | 70.2 ± 0.6a | 76.6 ± 1.1a | 11.8 ± 1.5bc |
| 25:75 | 57.7 ± 1.2bc | 64.2 ± 1.2b | 70.1 ± 1.2a | 78.3 ± 0.9a | 13.0 ± 1.3b |
| 0:100 | 64.9 ± 1.3a | 69.9 ± 1.7a | _ | 77.5 ± 1.0a | 16.6 ± 1.1a |
| LPWK | |||||
| 100:0 | 60.6 ± 1.8bc | 64.1 ± 1.1b | _ | 69.6 ± 2.5b | 5.7 ± 0.8d |
| 75:25 | 60.9 ± 1.9ab | 63.9 ± 1.1b | 69.9 ± 1.6a | 78.7 ± 1.1a | 11.1 ± 0.9bc |
| 50:50 | 60.8 ± 1.1abc | 64.8 ± 1.3b | 69.3 ± 1.4a | 77.9 ± 2.3a | 12.4 ± 1.2bc |
| 25:75 | 59.4 ± 2.4bc | 64.6 ± 1.7b | 69.1 ± 1.3a | 77.7 ± 1.3a | 12.9 ± 0.9b |
| 0:100 | 64.9 ± 1.3a | 69.1 ± 1.1a | _ | 77.5 ± 1.0a | 13.6 ± 1.0b |
*All data reported on dry basis and represent the mean of four replicates ± standard deviation. Means followed by a different superscript in each column are significantly different (p < 0.05). HPWC: High protein wheat/canna composite flour; LPWC: Low protein wheat/canna composite flour, HPWK: High protein wheat/konjac composite flour; LPWK: Low protein wheat/konjac composite flour. To, Tp, and Tc indicate temperature of onset, midpoint and end of gelatinization, respectively; ΔH (J/g dry starch) - enthalpy of gelatinization