From: Ionic liquid-based ultrasonic-assisted extraction coupled with HPLC to analyze isoquercitrin, trifolin and afzelin in Amygdalus persica L. flowers
Level
Independent variable
A (mol/L)
B (g/mL)
C (mesh)
D (min)
− 1
0.6
30
40
20
0
0.8
50
1
1.0
60