Table 6.
Independent variables, level of variation and the dependent variables.
| Independent Variable | Symbol | Level of Variation | ||
|---|---|---|---|---|
| −1 | 0 | +1 | ||
| Phospholipid (%) | X1 | 0.5 | 0.75 | 1 |
| Ethanol (%) | X2 | 5 | 7.5 | 10 |
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