Table 1.
Physical characteristics including thickness, moisture content, color, and mechanical property of films (The CG film, CG-ZSD10 film, CG-ZSD15 film, and CG-ZSD20 film contain 0, 10, 15, and 20% ZSD extraction, respectively).
| Film | CG | CG-ZSD10 | CG-ZSD15 | CG-ZSD20 |
|---|---|---|---|---|
| L | 91.1 ± 0.66d | 61.5 ± 0.74c | 58.8 ± 0.36b | 52.1 ± 0.43a |
| a | −1.29 ± 0.14a | 13.4 ± 0.49c | 12.7 ± 0.38b | 14.6 ± 0.36d |
| b | 5.50 ± 0.23d | −2.40 ± 0.28c | −3.73 ± 0.23b | −4.41 ± 0.50a |
| ΔE | 1.87 ± 0.26a | 33.7 ± 0.76b | 36.0 ± 0.29c | 42.9 ± 0.43d |
| Color |  |
 |
 |
 |
| Moisture content (%) | 15.8 ± 0.68a | 15.3 ± 0.25a | 15.1 ± 0.84a | 15.6 ± 0.04a |
| Thickness (μm) | 51.3 ± 0.50a | 53.8 ± 5.25a | 58.3 ± 8.46a | 74.3 ± 5.85b |
| Elongation at break (%) | 1.42 ± 0.37a | 3.00 ± 0.77b | 3.91 ± 0.69b | 6.33 ± 0.62c |
| Tensile strength (MPa) | 28.7 ± 0.51d | 25.8 ± 0.41c | 21.1 ± 0.47b | 20.0 ± 0.58a |
| Young's modulus (MPa) | 2009 ± 59.4c | 1373 ± 67.0b | 1316 ± 52.6b | 1129 ± 66.0a |
Note: All data were shown as mean ± standard deviation. Data with different letters indicated significant differences (p < 0.05).