| Drying methods | Hunter value | |||
|---|---|---|---|---|
| L* | a* | b* | ||
| Control | 91.91±0.88 | -0.44±0.13ab | 8.90±0.21e | |
| Sun-drying | 90.06±0.86a | 0.08±0.13a | 13.26±0.74cd | |
| Hot-air drying | 40 | 91.52±0.09a | -1.12±0.11c | 14.27±0.68bc |
| 50 | 92.22±0.94a | -1.85±0.11d | 14.18±0.11bc | |
| 60 | 91.77±0.65a | -1.52±0.28cd | 12.88±0.94cd | |
| Low temperature vacuum drying | 20 | 91.63±0.45a | -0.94±0.10bc | 12.86±0.19cd |
| 25 | 91.17±0.63a | -0.99±0.14bc | 13.93±0.13bc | |
| 30 | 86.25±0.21b | -1.14±0.11c | 17.55±1.50a | |
| Heat pump dehumidifying drying | 30 | 85.55±0.63b | -1.34±0.14cd | 16.88±0.20ab |
| 40 | 90.44±0.81a | -0.15±0.27a | 14.10±0.54bc | |
| 50 | 83.98±0.12b | 0.17±0.53a | 19.29±0.82a | |
| Freeze drying | 92.00±0.33a | -0.89±0.17bc | 10.32±1.00de | |