• Flavonoids extraction from citrus peel by dual-frequency ultrasound was examined. • Δ f , β , and Δ φ were considered to assess their impact on extraction yield. • Flavonoids yield depends on the synergistic effect of three coupling parameters. • It provides novel insights into the collaborative mechanism of coupling parameters. • Two kinetic models achieved high performance for flavonoids extraction behavior.
Liao et al. (Fri,) studied this question.