Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Table 2

The results of precision, repeatability, and stability.

Compound	Precision		Repeatability		Stability
	Intraday RSD (%)	Interday RSD (%)	Average contents (mg/g)	RSD (%)	RSD (%)
Catechin	1.12	1.53	1.34	1.16	1.39
Isoquercetin	1.17	1.08	2.58	1.17	1.66
Astragalin	0.64	0.82	1.09	0.89	1.46
Phloridzin	0.27	0.35	35.84	0.89	0.10
Trilobatin	0.13	0.27	273.66	0.80	0.11
Phloretin	0.96	1.26	1.14	2.16	1.91