Table 5 The color parameters of dried rose petals under different drying pretreatments. Note: Values with the same superscript are not significantly different (p > 0.05).
Pretreatment | L* | a* | b* | ΔE |
|---|---|---|---|---|
Fresh | 40.65 ± 0.70a | 14.86 ± 0.32a | 1.78 ± 0.12cd | - |
Control | 31.36 ± 0.78d | 19.22 ± 0.72d | 4.11 ± 0.13a | 10.53 ± 1.07c |
US10 | 34.26 ± 0.55c | 21.54 ± 0.91c | 1.39 ± 0.21de | 9.50 ± 0.52c |
US30 | 35.84 ± 2.30bc | 19.78 ± 0.83d | 1.02 ± 0.55e | 7.09 ± 0.41d |
ET10 | 28.51 ± 0.53e | 23.30 ± 0.90b | 3.64 ± 0.30ab | 14.89 ± 1.37b |
ET30 | 25.48 ± 1.10f | 24.88 ± 0.55a | 3.50 ± 0.39b | 18.28 ± 0.77a |
ET/US | 36.70 ± 0.34b | 21.84 ± 0.32c | 2.23 ± 0.20c | 7.79 ± 0.43d |