The Content Variation of Four Active Components in Amygdalus persica L. during Different Harvesting Periods

Figure 1

HPLC chromatograms of reference substances (a), samples S8 (b), and methanol blank control (c). (1) rutin; (2) 5-O-coumaroylquinic acid methyl ester; (3) chlorogenic acid butyl ester; (4) kaempferol.

(a)

(b)

(c)