Rapid Screening for Flavone C-Glycosides in the Leaves of Different Species of Bamboo and Simultaneous Quantitation of Four Marker Compounds by HPLC-UV/DAD

Table 5

Identification of flavone C-glycosides from bamboo leaves.

No.	RT (min)	[M-H]^− (m/z)	[2M-H]^− (m/z)	UV λ max (nm)	Identification
1	14.09	447.1	895.2	270, 349	Isoorientin
2	15.89	447.1	895.2	256, 349	Orientin
3	23.55	431.0	863.2	269, 338	Vitexin
4	25.93	431.0	863.2	270, 338	Isovitexin