Table 1 Variables and experimental levels for optimising culture conditions
From: Enhanced lipid and biomass production by a newly isolated and identified marine microalga
Factors | Coded symbol | Levels | ||
|---|---|---|---|---|
Levels |  | −1 | 0 | +1 |
Salinity | X1 | 20 | 30 | 40 |
Light intensity (μmol photons.m−2.s−1) | X2 | 84 | 133 | 182 |
pH | X3 | 6 | 7 | 8 |