| Sample | Hunter’s color value | |||
|---|---|---|---|---|
| Lightness (L) | Redness (a) | Yellowness (b) | ||
| Control | 57.04±0.67 | 0.65±0.02 | 11.95±0.25 | |
| Non roasting powder content (%) | 0.5 | 53.01±0.71 | -0.29±0.06 | 13.83±0.09 |
| 1.0 | 49.65±0.31 | -0.28±0.04 | 15.18±0.32 | |
| 2.0 | 46.74±0.66 | -0.39±0.09 | 16.93±0.41 | |
| 3.0 | 45.33±0.33 | -0.49±0.08 | 17.37±0.32 | |
| Roasting powder content (%) | 0.5 | 49.23±0.26 | 2.23±0.06 | 15.32±0.08 |
| 1.0 | 45.72±0.38 | 2.81±0.17 | 14.70±0.15 | |
| 2.0 | 38.48±0.28 | 3.80±0.09 | 13.74±0.12 | |
| 3.0 | 35.41±0.19 | 4.23±0.09 | 12.80±0.20 | |