Table 2.
Design matrix for the factorial experiments used to study the influence of factors, cassava wastewater (CW) and corn steep liquor (CSL) concentrations, varied symmetrically around the central point according to the 22 levels.
| Assays | Cassava wastewater (CW) % (v/v) | Corn steep liquor (CSL) % (v/v) | pH | Biomass (g/L) | Chitin (mg/g) | Chitosan (mg/g) |
|---|---|---|---|---|---|---|
| 1 | 5.00 | 4.00 | 6.98 | 6.93 | 69.57 | 50.12 |
| 2 | 10.0 | 4.00 | 6.98 | 5.67 | 89.39 | 57.82 |
| 3 | 5.00 | 8.00 | 6.18 | 9.93 | 50.09 | 44.51 |
| 4 | 10.0 | 8.00 | 6.20 | 8.57 | 60.71 | 34.47 |
| 5 | 7.50 | 6.00 | 6.50 | 7.16 | 70.03 | 47.37 |
| 6 | 7.50 | 6.00 | 6.35 | 8.00 | 72.40 | 48.93 |
| 7 | 7.50 | 6.00 | 6.23 | 7.70 | 76.64 | 46.00 |
| 8 | 7.50 | 6.00 | 6.48 | 7.31 | 70.27 | 45.81 |