Fig. 3From: Analysis of tilianin and acacetin in Agastache rugosa by high-performance liquid chromatography with ionic liquids-ultrasound based extractionEffect of mesh sieve that A. rugosa passing through. Effect of mesh sieve that A. rugosa passing through on the extraction yield of two target analytes, with 0.8 mol/L [BMIM]Br, solid–liquid ratio 1:20 (g/mL), ultrasonic for 30 min. The extraction yield was expressed as the observed values of target analytes (mg/g), the content of tilianin and acacetin per gram of A. rugosa powderBack to article page