Table 3.
ANOVAs of the predicted second−order polynomial model for total polyphenol extract yield of cabbage leaves and banana peels
| Source of Variation | df | Cabbage Leaves | Banana Peels | |||
|---|---|---|---|---|---|---|
| F value | p value | F value | p value | |||
| Linear | Intercept | 20 | 4482.57*** | < 0.0001 | 442.02*** | <0.0001 |
| A:Extraction Temperature | 1 | 30,628.13*** | < 0.0001 | 33,065.09*** | <0.0001 | |
| B:Amplitude Level | 1 | 31,250.00*** | < 0.0001 | 3095.98*** | <0.0001 | |
| C:Water/meal ratio | 1 | 4050.00*** | < 0.0001 | 401.24*** | <0.0001 | |
| D:Extraction Time | 1 | 4753.13*** | < 0.0001 | 401.24*** | <0.0001 | |
| E:Extraction pH | 1 | 17,578.13*** | < 0.0001 | 1741.49*** | <0.0001 | |
| Interaction | AB | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 |
| AC | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| AD | 1 | 12.50 | 0.0016 | 0.31 | 1.5829 | |
| AE | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| BC | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| BD | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| BE | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| CD | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| CE | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| DE | 1 | 0.000 | 1.0000 | 0.000 | 1.0000 | |
| Quadratic | A2 | 1 | 1.70 | 0.2036 | 2.70 | < 0.1127 |
| B2 | 1 | 0.19 | 0.6672 | 0.30 | < 0.5886 | |
| C2 | 1 | 232.01 | < 0.0001 | 19.21 | < 0.0002 | |
| D2 | 1 | 288.07 | < 0.0001 | 43.23 | < 0.0001 | |
| E2 | 1 | 1037.12 | < 0.0001 | 94.59 | < 0.0001 | |
| Residual | 25 | – | – | – | – | |
| Lack of Fit | 20 | – | – | – | – | |
| Pure Error | 5 | – | – | – | – | |
| Cor. Total | 45 | – | – | – | – | |
***Significant at 0.05 level
NS Non−Significant