Table 2.
Factors and levels for orthogonal design of total flavonoids extracted from loquat flowers.
| Level | Factor | |||
|---|---|---|---|---|
|
| ||||
| Temperature (°C) | Extraction time (h) | Solid–liquid ratio | Frequency | |
| 1 | 80 | 1.5 | 1:15 | 1 |
| 2 | 90 | 2.0 | 1:20 | 2 |
| 3 | 100 | 2.5 | 1:25 | 3 |
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