Table 6
Predicted values of optimum condition for the maximized and minimized responses to variables by the ridge analysis by their response sur face
| X11) | X2 | Estimated Responses | Morphology |
| Yield(%) | 9.38 | 28.04 | 55.15(Max.) | saddle |
| EGC2)(%) | 1.60 | 16.52 | 13.82(Max.) | saddle |
| EC(%) | 1.45 | 15.14 | 4.08(Max.) | saddle |
| ECGC(%) | 1.75 | 17.69 | 24.98(Max.) | saddle |
| ECG(%) | 1.77 | 17.81 | 6.26(Max.) | saddle |
| Caffeine(%) | 11.75 | 20.73 | 5.49(Min.) | saddle |
| Total catechin(%) | 1.68 | 17.19 | 49.14(Max.) | saddle |
1)X1, ratio of solvent to sample content (mL/g); X2, Extraction temperature (℃).
2)Epigallocatechin (EGC), Epicathchin (EC), Epigallocatechingallate (EGCG), Epicatechingallate (ECG).