HPLC analysis of standard flavone samples.

Sample name	Appearance time	Standard curve	R 2
Catechin	14.409	y = 0.20661x − 0.55675	0.99488
Puerarin	15.581	y = 0.62291x − 0.68303	0.99102
Epicatechin	16.642	y = 0.30391x − 0.60681	0.99944
Daidzin	17.433	y = 1.62062x − 4.9338	0.99071
Glycitin	17.675	y = 0.5935x − 1.15971	0.99001
Rutin	18.506	y = 0.33798x − 0.58622	0.99916
Genistin	19.996	y = 0.97846x − 2.12908	0.9926
Naringin	20.887	y = 0.90085x − 1.2498	0.99925
Myricetin	23.643	y = 3.8276x − 74.865	0.9991
Daidzein	24.482	y = 1.51482x − 1.73103	0.99296
Luteolin	25.287	y = 1.20201x − 3.91584	0.99896
Quercetin	25.50	y = 0.7697x − 2.82202	0.99821
Apigenin	27.728	y = 1.46804x − 2.33909	0.99956
Genistein	27.863	y = 1.48016x − 2.05509	0.99369
Kaempferol	28.347	y = 0.98661x − 2.8085	0.99963
Chrysin	34.082	y = 2.81375x − 5.19779	0.9993