Table 2.
Films | L* | a* | b* | ΔE | Opacity |
---|---|---|---|---|---|
3% glycerol | |||||
pH 7 | 88.16 ± 0.32 a | 0.51 ± 0.07 d | 21.46 ± 0.65 a | 21.51 ± 0.71 a | 23.74 ± 0.49 a |
pH 10 | 88.02 ± 0.56 a | −1.01 ± 0.08 a | 23.05 ± 0.79 ab | 23.04 ± 0.94 ab | 23.98 ± 0.44 a |
1% glycerol | |||||
pH 7 | 89.27 ± 0.35 b | −0.14 ± 0.02 c | 22.49 ± 1.43 a | 22.09 ± 1.46 a | 26.84 ± 0.43 c |
pH 10 | 88.15 ± 0.53 a | −0.40 ± 0.01 b | 25.08 ± 2.17 b | 24.88 ± 2.00 b | 25.89 ± 0.15 b |
Analysis of variance | |||||
Glycerol | * | NS | * | NS | *** |
pH | * | *** | * | ** | NS |
Interaction | NS | *** | NS | NS | * |
Means in the same column with different letters (a–d) are significantly different (p < 0.05). NS—not significant (p > 0.05); * p < 0.05; ** p < 0.01; *** p < 0.001.