Research Article
Extraction Optimization, Preliminary Identification, and Bioactivities in Corn Silk
Table 2
The factors and levels of the RSM experiment of the flavonoid extraction process.
| | Variables | Code | Level | | −1 | 0 | 1 |
| | Ultrasonic time (min) | A | 40 | 45 | 50 | | Ultrasonic temperature (°C) | B | 50 | 60 | 70 | | Liquid-solid ratio (mL/g) | C | 20 | 25 | 30 | | Ethanol concentration (%) | D | 60 | 70 | 80 |
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