Table 1.
Color change of the TP-LGG compound gels with pH 3–9.
| pH | L* | a* | b* | ΔE |
|---|---|---|---|---|
| 3 | 12.28 ± 0.58 b | 2.36 ± 0.09 b | 10.55 ± 1.73 ab | 28.27 ± 0.08 b |
| 4 | 13.97 ± 0.90 ab | 2.35 ± 0.18 b | 11.89 ± 1.92 a | 28.56 ± 1.40 b |
| 5 | 13.95 ± 0.48 ab | 2.82 ± 0.84 ab | 11.32 ± 2.73 ab | 28.74 ± 0.26 b |
| 6 | 14.94 ± 0.58 a | 2.41 ± 0.49 b | 11.61 ± 1.77 a | 28.02 ± 1.41 b |
| 7 | 14.68 ± 0.94 a | 3.48 ± 0.21 a | 8.95 ± 0.32 ab | 28.59 ± 0.35 b |
| 8 | 13.20 ± 1.39 ab | 2.86 ± 0.29 ab | 7.33 ± 0.40 bc | 30.74 ± 0.87 a |
| 9 | 14.88 ± 0.88 a | 2.96 ± 0.06 ab | 5.33 ± 0.95 c | 31.01 ± 0.17 a |
The abc labeling method in statistics is a commonly used labeling method used to represent the significance and difference of statistical results. The difference between groups with the same letter is not significant, while the difference between groups with different letters is significant.