Table 1.

Peak assignments in the HPLC–PDA–ESI–MS/MS analysis of enriched PLS extract.

Peak No.	RT (min)	Identification	Molecular Formular	λ Max (nm)	[M+H]+	[M–H]–	Product ion (m/z)
1	7.83	Puerarin-4’-O-β-D-glucopyranoside	C27H30O14	248,303	579.20	577.15	297.32, 417.20
2	9.89	3’-hydroxypuerarin-4’-O-dexyhexoside	C27H30O14	249,297	579.20	623.15 [M+HCOOH–H]–	433.14, 283.16, 313.39
3	10.88	3’-hydroxypuerarin	C21H20O10	250	433.10	431.10	313.40, 283.20
4	15.43	Puerarin	C21H20O9	250,305	417.10	415.09	297.12
5	16.74	3’-methoxy puerarin	C22H22O10	250,306	447.15	445.10	327.08, 297.07
6	17.33	Puerarin xyloside	C26H28O13	250	549.15	547.15	417.12, 297.06
7	20.72	Daidzin	C21H20O9	250,306	417.15	461.10 [M+HCOOH–H]–	255.07
8	23.08	3’-Methoxydaidzin	C22H22O10	248,300	447.20	491.15 [M+HCOOH–H]–	285.08
9	29.03	Genistein 8-C-glucoside	C21H20O10	260	433.10	431.10	311.34, 283.21
10	36.82	Ambocin	C26H28O14	249,300	565.20	563.15	311.05, 283.06
11	40.28	Neopuerarin A	C21H20O9	250,306	417.15	415.10	295.38, 267.26
12	42.46	Neopuerarin B	C26H28O14	250,306	417.15	415.10	295.38, 267.26