Table 3.
The color values (L*a*b*), a total difference of color value (ΔE), whiteness index (WI) and opacity (Op) of prepared films based on sodium alginate and gelatin with different amounts of glycerol and lipids, as well as the sample with incorporated PLA microparticles.
| Sample | L* | a* | b* | ΔE | WI | Op (A600/mm) |
|---|---|---|---|---|---|---|
| ALG/GEL/G (1%) | 89.49 ± 0.04 | −1.19 ± 0.07 | 5.78 ± 0.06 | 6.61 ± 0.05 | 87.95 ± 0.05 | 1.10 ± 0.03 |
| ALG/GEL/G (10%) | 85.39 ± 0.07 | −1.45 ± 0.08 | 8.75 ± 0.10 | 10.00 ± 0.12 | 82.91 ± 0.11 | 1.30 ± 0.05 |
| ALG/GEL/G (1%)/L (1.7%) | 82.33 ± 0.14 | −0.37 ± 0.03 | 14.07 ± 0.11 | 16.04 ± 0.15 | 77.41 ± 0.16 | 7.35 ± 0.11 |
| ALG/GEL/G (1%)/L (3.4%) | 82.70 ± 0.09 | −0.85 ± 0.04 | 13.79 ± 0.07 | 15.64 ± 0.03 | 77.86 ± 0.03 | 7.05 ± 0.09 |
| ALG/GEL/G (1%)/L (3.4%) + MPs | 80.84 ± 0.03 | −0.46 ± 0.02 | 20.44 ± 0.04 | 22.52 ± 0.03 | 71.98 ± 0.02 | 6.26 ± 0.15 |
| ALG/GEL/G (10%)/L (1.7%) | 86.58 ± 0.06 | −2.33 ± 0.04 | 12.19 ± 0.10 | 13.16 ± 0.09 | 81.73 ± 0.05 | 2.84 ± 0.04 |
| ALG/GEL/G (10%)/L (3.4%) | 84.66 ± 0.03 | −2.68 ± 0.02 | 14.62 ± 0.14 | 15.94 ± 0.13 | 78.64 ± 0.09 | 4.46 ± 0.06 |