Table 5.
Analysis of variance (ANOVA) for the different components.
| Response variables∗ | Protein (%) | Total carbohydrate (%) | TOC (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| SS | DF | P | SS | DF | P | SS | DF | P | |
| Linear | |||||||||
| a | 1.22908 | 1 | 0.0879 | 527185 | 1 | 0.0401 | 73767 | 1 | 0.3003 |
| b | 0.63051 | 1 | 0.2055 | 252382 | 1 | 0.1340 | 229731 | 1 | 0.0827 |
| c | 1.32821 | 1 | 0.0777 | 126127 | 1 | 0.2757 | 1114 | 1 | 0.8959 |
| d | 11.2011 | 1 | 0.0002 | 236669 | 1 | 0.1453 | 3577326 | 1 | 0.00002 |
| Square | |||||||||
| a 2 | 1.20806 | 1 | 0.0903 | 7446 | 1 | 0.7851 | 18008 | 1 | 0.6012 |
| b 2 | 0.22765 | 1 | 0.4348 | 7401 | 1 | 0.7857 | 165268 | 1 | 0.1331 |
| c 2 | 0.07816 | 1 | 0.6438 | 7813 | 1 | 0.7800 | 198 | 1 | 0.9560 |
| d 2 | 0.33452 | 1 | 0.3472 | 130787 | 1 | 0.2675 | 27970 | 1 | 0.5164 |
| 2-way interaction | |||||||||
| ab | 0.51737 | 1 | 0.2480 | 1385817 | 1 | 0.0034 | 340 | 1 | 0.9423 |
| ac | 0.37559 | 1 | 0.3205 | 15102 | 1 | 0.6982 | 958 | 1 | 0.9034 |
| ad | 0.37908 | 1 | 0.3184 | 557228 | 1 | 0.0358 | 13764 | 1 | 0.6471 |
| bc | 0.03144 | 1 | 0.7685 | 21259 | 1 | 0.6461 | 12706 | 1 | 0.6600 |
| bd | 0.03864 | 1 | 0.7444 | 78304 | 1 | 0.3845 | 15659 | 1 | 0.6256 |
| cd | 0.13358 | 1 | 0.5470 | 16491 | 1 | 0.6855 | 17280 | 1 | 0.6085 |
| Lack of fit | 3.4338 | 10 | 948594 | 10 | 618100 | 10 | |||
|
| |||||||||
| Total | 26.3276 | 24 | 5074315 | 24 | 5320338 | 24 | |||
| R 2 | 0.8694 | 0.81306 | 0.8838 | ||||||
| Adj-R 2 | 0.68656 | 0.55134 | 0.72118 | ||||||
∗ a: extraction temperature; b: extraction time; c: particle size; d: microalgal biomass loading; SS: sum of squares; DF: degrees of freedom; P: probability.