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 3

Intra- and interday precision by the HPLC quantitation method.

Compound	Concentration (μg/mL)	Intraday (𝑛=4) RSD (%)			Interday (𝑛=12) RSD (%)
		Day 1	Day 2	Day 3
Isoorientin	5	0.77	0.66	0.74	1.12
	15	0.62	0.08	0.15	0.90
	50	0.13	0.08	0.14	0.73
Orientin	5	0.64	0.27	0.18	1.18
	15	0.30	0.08	0.17	0.77
	50	0.21	0.08	0.08	0.73
Vitexin	5	0.16	0.15	0.22	0.64
	15	0.09	0.07	0.05	0.57
	50	0.25	0.06	0.08	0.57
Isovitexin	5	0.29	0.20	0.27	0.66
	15	1.56	0.11	0.16	1.33
	50	0.31	0.07	0.12	0.64