Table 2.
Visual properties of CAFEO films and CAFEO films incorporating with 5, 10, 20 and 30% glycerol.
| Samples | L∗ | a∗ | b∗ | ΔE∗ | Opacity |
|---|---|---|---|---|---|
| CAFEO0%Glycerol | 97.15 ± 0.08a | −0.01 ± 0d | 0.17 ± 0.03d | 3.22 ± 0.1b | 92.848 ± 0.21a |
| CAFEO5%Glycerol | 96.77 ± 0.86a | 0.38 ± 0.06c | 0.85 ± 0.21c | 2.32 ± 1.77b | 91.97 ± 2.09ab |
| CAFEO10%Glycerol | 94.83 ± 2.58b | 1.06 ± 0.09a | 2.6 ± 0.9b | 14.49 ± 18.3b | 87.54 ± 5.92b |
| CAFEO20%Glycerol | 90.77 ± 1.53c | 1.02 ± 0.06a | 3.44 ± 0.19a | 48.875 ± 18.2a | 79.79 ± 3.67c |
| CAFEO30%Glycerol | 96.71 ± 0.48ab | 0.59 ± 0.04b | 1.1 ± 0.09c | 1.581 ± 0.68b | 91.82 ± 1.16ab |
∗Average followed by the same letters do not differ from each other (p > 0.05) by the Tukey test at the 5% level of significance.