Table 3 Water absorption index, water solubility index, water hording capacity, integrity index and texture of extruded soy protein isolate with different moisture content and CO2 gas injection
| Moisture content (%) | CO2 gas injection (mL/min) | WAI2) (g/g) | WSI3) (%) | WHC4) (%) | Integrity index (%) | Texture |
| Springiness (%) | Cohesiveness (%) |
| Control1) | 4.54±0.15ab5) | 10.92±0.31a | - | - | - | - |
| 40 | 0 | 4.67±0.12a | 5.84±0.21bc | 507.94±0.42c | 75.65±1.08ab | 78.77±2.27ab | 61.40±4.71ab |
| 800 | 4.27±0.31b | 3.61±0.25c | 510.70±6.35c | 38.00±2.07c | 70.26±2.29cd | 49.84±3.03c |
| 50 | 0 | 3.71±0.18c | 5.05±0.67bc | 506.03±2.58c | 73.35±0.45b | 75.60±2.19bc | 58.30±2.98bc |
| 800 | 3.78±0.04c | 7.20±0.97b | 547.54±8.22b | 12.64±2.80d | 68.26±3.67d | 48.99±4.33c |
| 60 | 0 | 4.56±0.04ab | 5.99±0.39bc | 508.38±9.14c | 77.33±0.46a | 81.94±3.38a | 62.64±4.44a |
| 800 | 4.62±0.12a | 6.56±0.70bc | 591.13±5.64a | 10.31±0.88d | 78.67±3.26ab | 61.55±4.37ab |
Raw soy protein isolate.
Water absorption index.
Water solubility index.
Water hording capacity.
Means with different letters within a column are significantly different (p<0.05) by Duncan’s multiple range test.