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 6

Content of isoorientin, isovitexin, orientin, and vitexin in different samples by HPLC method.

Compound	Content of marker compounds^a (% w/w)
	Bambusa multiplex; cv. Silverstripe	Phyllostachys heterocycla; cv. pubescens	Phyllostachys acuta; C. D. Chu et C. S. Chao	Commercial product of bamboo-leaf flavonoids
Isoorientin	0.278±0.0021	0.100±0.0037	0.138±0.0096	2.235±0.0100
Orientin	ND	0.026±0.0032	0.031±0.0008	0.762±0.0076
Vitexin	ND	0.007±0.0004	ND	0.183±0.0014
Isovitexin	0.068±0.0006	0.028±0.0012	0.020±0.0011	0.547±0.0029

^amean ± SD (𝑛=3).