Table 1 Nitrogen solubility index, water soluble index and hydration ratio of extruded ISP with different biji contents
| Biji (%) | Barrel temperature (°C) | Moisture content (%) | Nitrogen solubility index (%) | Water soluble index (%) | Hydration ratio (%) |
| 0 | 140 | 35 | 75.80±4.78b.c.d.e | 10.37±0.42f.g | 276.68±2.23a |
| 45 | 66.15±4.89d.e | 8.93±0.15i | 264.14±4.11b |
| 150 | 35 | 72.74±2.40c.d.e | 11.87±0.65d.e.f | 278.54±6.47a |
| 45 | 62.60±2.38e | 10.20±0.40h.i | 268.02±2.20b |
| 20 | 140 | 35 | 72.70±3.07b.c | 9.87±0.55d.e.f | 242.52±3.80cd |
| 45 | 63.36±2.77c.d.e | 8.23±0.31h.i | 237.44±4.26d |
| 150 | 35 | 72.00±3.54b.c.d | 10.53±0.31c.d | 245.65±4.68c |
| 45 | 62.04±3.53c.d.e | 9.10±0.20ig.h | 239.95±1.09cd |
| 40 | 140 | 35 | 68.90±5.32a.b | 8.73±0.60b.c | 208.90±4.40ef |
| 45 | 65.14±3.95c.d.e | 7.17±0.40e.f | 204.46±2.45f |
| 150 | 35 | 67.82±3.24a.b | 9.20±0.40b | 211.85±4.16e |
| 45 | 62.27±2.77c.d.e | 7.37±0.25d | 203.25±2.15f |
| 60 | 140 | 35 | 66.42±2.49a | 8.03±0.31b | 185.51±2.63g |
| 45 | 60.90±3.59b.c.d.e | 6.53±0.40d.e | 179.93±0.41g |
| 150 | 35 | 65.21±2.06a.b | 8.50±0.40a | 182.69±1.00g |
| 45 | 60.16±4.89c.d.e | 6.63±0.70b | 180.48±0.89g |
Means ±SD
Values with different letters in column are significantly different (p<0.05) by Duncan’s multiple range test.