Table 1.
Surface color coordinates of fresh and oven-dried U. rigida, Gracilaria sp. and F. vesiculosus.
| Drying Condition | CIELAB | U. rigida | Gracilaria sp. | F. vesiculosus |
|---|---|---|---|---|
| Fresh | a* | −10.18 ± 0.52 | 4.86 ± 0.47 d | 1.12 ± 0.33 f |
| b* | 43.65 ± 0.98 a | 3.77 ± 0.50 d | 2.56 ± 1.08 f | |
| L* | 72.18 ± 1.13 a | 14.32 ± 0.91 d | 21.00 ± 1.24 f | |
| BI | 65.17 | 70.94 | 18.65 | |
| ΔE* | - | - | - | |
| 25 °C | a* | −11.86 ± 0.37 a | 9.73 ± 0.80 e | 0.65 ± 0.25 f |
| b* | 44.89 ± 0.90 a | 5.16 ± 0.81 e | 2.27 ± 0.65 f | |
| L* | 72.07 ± 1.16ab | 18.52 ± 0.84 e | 21.46 ± 0.79 f | |
| BI | 65.11 | 96.20 | 14.25 | |
| ΔE* | 2.09 | 6.59 | 0.72 | |
| 40 °C | a* | −11.60 ± 0.25 a | 9.09 ± 1.71 e | 0.91 ± 0.40 f |
| b* | 47.20 ± 1.74 b | 4.03 ± 0.61 de | 3.99 ± 0.94 g | |
| L* | 70.20 ± 1.19 b | 18.65 ± 1.46 e | 23.15 ± 1.05 g | |
| BI | 75.16 | 81.21 | 23.04 | |
| ΔE* | 4.30 | 6.05 | 2.59 | |
| 60 °C | a* | −13.57 ± 0.34 b | 10.09 ± 0.71 f | 1.46 ± 0.50 f |
| b* | 50.61 ± 0.64 c | 4.72 ± 0.46 de | 7.24 ± 0.99 h | |
| L* | 67.28 ± 1.99 c | 18.49 ± 1.88 e | 25.41 ± 1.12 h | |
| BI | 87.15 | 94.60 | 39.76 | |
| ΔE* | 9.17 | 6.76 | 6.43 |
Values are presented as mean ± standard deviation. Color difference (ΔE*) of a specific dried sample was calculated with respect to the fresh macroalgae. Different letters (a,b,c,d,e,f,h,g) in the same column (for a specific colorimetric coordinate) indicate significant differences (p < 0.05) according to Tukey’s test.