Table 2 Levels of process variables and values for colour characteristics of heat-moisture treated Bambara groundnut under different treatment conditions.
Independent variables | Response variables | |||||||
|---|---|---|---|---|---|---|---|---|
Temperature (°C) | Time (min) | L* | a* | b* | C* | H° | WI | ∆E |
HMT 15 | ||||||||
100 | 17.57 | 81.9 | 1.5 | 3.4 | 3.7 | 66.6 | 81.5 | 19.0 |
100 | 60 | 80.7 | 2.5 | 4.6 | 5.2 | 61.6 | 80.0 | 20.1 |
100 | 60 | 82.2 | 1.8 | 3.3 | 3.7 | 61.0 | 81.8 | 18.6 |
100 | 102.43 | 79.3 | 1.2 | 3.1 | 3.3 | 68.2 | 79.0 | 21.9 |
120 | 30 | 81.8 | 1.8 | 3.6 | 4.0 | 63.9 | 81.4 | 19.5 |
120 | 90 | 80.6 | 2.2 | 3.9 | 4.5 | 60.2 | 80.1 | 20.1 |
80 | 30 | 82.3 | 1.3 | 3.2 | 3.5 | 68.0 | 81.9 | 18.0 |
80 | 90 | 82.1 | 1.4 | 3.5 | 3.8 | 69.0 | 81.7 | 18.4 |
71.72 | 60 | 81.8 | 1.7 | 3.1 | 3.6 | 62.0 | 81.5 | 18.4 |
128.28 | 60 | 81.8 | 1.9 | 4.7 | 5.0 | 68.1 | 81.1 | 19.0 |
HMT 25 | ||||||||
100 | 17.57 | 81.5 | 1.8 | 3.4 | 3.8 | 61.7 | 81.1 | 18.9 |
100 | 60 | 81.1 | 1.7 | 3.6 | 4.0 | 64.4 | 80.7 | 19.4 |
100 | 60 | 82.0 | 1.8 | 3.6 | 4.0 | 64.3 | 81.6 | 19.1 |
100 | 102.43 | 80.2 | 2.3 | 4.2 | 4.7 | 60.2 | 79.6 | 19.9 |
120 | 30 | 81.8 | 1.6 | 3.3 | 3.6 | 64.6 | 81.4 | 18.6 |
120 | 90 | 78.4 | 2.3 | 4.5 | 5.1 | 63.5 | 77.8 | 22.3 |
80 | 30 | 81.3 | 1.9 | 3.8 | 4.2 | 63.3 | 80.8 | 19.7 |
80 | 90 | 81.2 | 1.8 | 3.4 | 3.8 | 61.3 | 80.8 | 18.5 |
71.72 | 60 | 81.2 | 1.7 | 4.0 | 4.4 | 66.6 | 80.7 | 18.9 |
128.28 | 60 | 80.5 | 2.3 | 3.9 | 4.6 | 59.1 | 79.9 | 20.1 |
HMT 35 | ||||||||
100 | 17.57 | 80.8 | 1.7 | 4.2 | 4.5 | 67.9 | 80.3 | 19.7 |
100 | 60 | 75.7 | 3.6 | 5.8 | 6.9 | 58.1 | 74.8 | 23.7 |
100 | 60 | 77.9 | 2.4 | 4.3 | 4.9 | 61.0 | 77.4 | 23.2 |
100 | 102.43 | 77.8 | 3.2 | 5.3 | 6.2 | 59.1 | 76.9 | 22.7 |
120 | 30 | 79.7 | 2.4 | 5.0 | 5.5 | 64.6 | 78.9 | 20.3 |
120 | 90 | 74.2 | 4.4 | 5.8 | 7.3 | 53.2 | 73.2 | 27.3 |
80 | 30 | 80.1 | 2.4 | 4.3 | 4.9 | 60.9 | 79.5 | 21.0 |
80 | 90 | 78.9 | 2.0 | 4.7 | 5.1 | 67.0 | 78.3 | 21.0 |
71.72 | 60 | 80.6 | 1.6 | 4.8 | 5.1 | 71.1 | 79.9 | 20.0 |
128.28 | 60 | 75.6 | 2.1 | 4.8 | 5.2 | 66.6 | 75.0 | 23.7 |
