Sample | Color value | ||
---|---|---|---|
L (Lightness) | a (Redness) | b (Yellowness) | |
Hot-air drying | 25.40 ± 1.57 | 13.08 ± 0.76 | 10.31 ± 1.10 |
Far-infrared radiation drying | 26.14 ± 2.01 | 20.30 ± 1.31 | 11.63 ± 0.79 |
Vacuum freeze drying | 33.76 ± 2.85 | 37.94 ± 1.90 | 14.83 ± 1.26 |