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(a) Semi-preparative reverse phase high-performance liquid chromatography profile of Alcalase® hydrolysate of asparagus by-product. Fractions (F1–F10) are indicated by vertical dashed lines. The dotted line represents the gradient of solvent B. Bar chart displaying the results of antioxidant (ABTS and DPPH) (b) and ACE-inhibitory activity assays on collected fractions (c).
