Table 2.
Coded levels for the experimental design.
| Independent variable | Coded Levels |
||
|---|---|---|---|
| +1 | 0 | −1 | |
| Concentration of soya lecithin (lipid), mg | 30 | 10 | 20 |
| Concentration of PLA (Polymer), mg | 30 | 10 | 20 |
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