Optimisation of preparative HPLC separation of four isomeric kaempferol diglycosides from Prunus spinosa L. by application of the response surface methodology
Keywords: Prunus spinosa; Preparative HPLC; Kaempferol 3-O-β-d-xylopyranoside-7-O-α-l-rhamnopyranoside; Central composite design; CCD;