Table 3.
Analysis of variance (ANOVA) for Response Surface Quadratic Model for antioxidant capacity
| Source | Sum of square | df | Mean square | F value |
p value prob > F |
|
|---|---|---|---|---|---|---|
| Block | 10,449.99 | 2 | 5225.00 | |||
| Model | 14,558.03 | 20 | 727.90 | 112.61 | < 0.0001 | Significant |
| A-NH4H2PO4 | 22.35 | 1 | 22.35 | 3.46 | 0.0728 | |
| B-KH2PO4 | 77.01 | 1 | 77.01 | 11.91 | 0.0017 | |
| C-MgSO4 | 523.45 | 1 | 523.45 | 80.98 | < 0.0001 | |
| D-Isoleucine | 1807.85 | 1 | 1807.85 | 279.65 | < 0.0001 | |
| E-Thiamine | 3839.64 | 1 | 3839.64 | 594.00 | < 0.0001 | |
| AB | 192.57 | 1 | 192.57 | 29.79 | < 0.0001 | |
| AC | 28.69 | 1 | 28.69 | 4.44 | 0.0436 | |
| AD | 1158.01 | 1 | 1158.01 | 179.15 | < 0.0001 | |
| AE | 32.20 | 1 | 32.20 | 4.98 | < 0.0001 | |
| BC | 192.57 | 1 | 192.57 | 29.79 | < 0.0001 | |
| BD | 573.76 | 1 | 573.76 | 88.76 | 0.0236 | |
| BE | 36.77 | 1 | 36.77 | 5.69 | < 0.0001 | |
| CD | 211.67 | 1 | 211.67 | 32.75 | < 0.0001 | |
| CE | 2330.74 | 1 | 2330.74 | 360.57 | < 0.0001 | |
| DE | 2597.40 | 1 | 2597.40 | 401.82 | < 0.0001 | |
| A2 | 273.51 | 1 | 273.51 | 42.31 | 0.0033 | |
| B2 | 65.70 | 1 | 65.70 | 10.16 | 0.0580 | |
| C2 | 25.12 | 1 | 25.12 | 3.89 | < 0.0001 | |
| D2 | 167.30 | 1 | 167.30 | 25.88 | < 0.0001 | |
| E2 | 320.69 | 1 | 320.69 | 49.61 | < 0.0001 | |
| Residual | 193.92 | 30 | 6.46 | |||
| Lack of fit | 111.91 | 22 | 5.09 | 0.50 | 0.9076 | Not significant |
| Pure error | 82.01 | 8 | 10.25 | |||
| Cor total | 25,201.94 | 52 |