Analysis of Flavone C-Glycosides in the Leaves of Clinacanthus nutans (Burm. f.) Lindau by HPTLC and HPLC-UV/DAD

Table 1

Linear range, regression equations, LOD, and LOQ for quantitative analysis of HPLC ().

Compound	(min)	(nm)	Linear range (g/mL)	Regression equation^a		LOD (g/mL)	LOQ (g/mL)
Shaftoside	22.79	271, 337	20.0–200			0.2	0.6
Orientin	25.58	255, 349	0.8–100			0.4	0.8
Isovitexin	27.16	269, 337	0.8–100			0.4	0.8
Vitexin	28.61	268, 337	0.8–100			0.4	0.8

, where is concentration in g/mL and is area under curve at UV 330 nm wavelength.