Table 3.
Sensory evaluation of fr ied r ice depending on the storage per iod and temperature
Sensory characteristics | Temp. (°C) | Storage period (week) |
0 | 2 | 3 | 4 | 5 | 6 |
Appearance | -20 | 7.5±0.7a1) | 7.8±0.4a | 7.5±0.0a | 7.3±0.4a | 7.1±0.1a | 7.0±0.2a |
4 | 7.5±0.7a2) | 4.5±0.7b | 2.5±0.7c | 2.4±0.2c | 2.1±0.1c | 1.9±0.1c |
25 | 7.0±1.4a | 2.5±0.7b | 2.5±0.7b | 2.3±1.1b | 2.1±0.8b | 1.1±0.1c |
Color | -20 | 7.5±0.7a | 7.3±1.1a | 6.8±0.4a | 6.7±0.2a | 6.5±0.1a | 6.3±0.1a |
4 | 7.5±0.7a | 5.5±2.1a | 2.5±0.7b | 2.2±0.3b | 2.0±0.0b | 1.5±0.0b |
25 | 7.0±1.4a | 1.5±0.7b | 1.5±0.7b | 1.3±0.4b | 1.1±0.1b | 1.0±0.0b |
Flavor | -20 | 8.0±1.4a | 7.8±0.4a | 7.5±0.0a | 7.5±0.0a | 7.3±0.3a | 6.9±0.1a |
4 | 8.0±0.7a | 4.5±0.7b | 1.5±0.7b | 1.1±0.1b | 1.0±0.0b | 1.0±0.0b |
25 | 7.5±0.7a | 1.0±0.0b | 1.0±0.0b | 1.0±0.0b | 1.0±0.0b | 1.0±0.0b |
Taste | -20 | 7.8±0.4a | 7.3±0.4a | 7.3±0.4ab | 7.1±0.1ab | 6.9±0.1b | 6.8±0.0b |
4 | 7.5±0.0 | - | - | - | - | - |
25 | 7.5±0.7 | - | - | - | - | - |
Texture | -20 | 7.5±0.7a | 7.3±0.4a | 7.3±0.4a | 7.2±0.2a | 7.0±0.1a | 6.9±0.1a |
4 | 7.5±1.1 | - | - | - | - | - |
25 | 7.2±1.4 | - | - | - | - | - |
Overall preference | -20 | 7.8±0.4a | 7.3±0.4ab | 7.3±0.4ab | 7.2±0.2ab | 7.0±0.1b | 6.7±0.3b |
4 | 7.8±0.0a | 4.0±0.0b | 2.0±0.0b | 1.9±0.1b | 1.7±0.1b | 1.3±0.4c |
25 | 7.5±0.7a | 1.0±0.7b | 1.0±0.0b | 1.0±0.0b | 1.0±0.0b | 1.0±0.0b |
Values are mean±SD (n=5).
Means with different superscripts within a column indicate significantly differences at p<0.05 by Duncan’s test.