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

Table 3

Results of the recovery test.

Compound	Known (mg)	Added (mg)	Found (mg)	Recovery (%)	Average recovery (%)	RSD (%)
Catechin	0.05	0.04	0.09	98.48	101.57	2.02
	0.05	0.04	0.09	103.95
	0.05	0.04	0.09	102.22
	0.04	0.04	0.08	100.59
	0.05	0.04	0.09	100.68
	0.04	0.04	0.09	103.49
Isoquercetin	0.12	0.10	0.23	102.49	102.31	2.31
	0.12	0.10	0.22	97.97
	0.12	0.10	0.23	104.35
	0.11	0.10	0.22	104.47
	0.12	0.10	0.22	101.96
	0.11	0.10	0.22	102.61
Astragalin	0.18	0.16	0.33	99.80	99.22	2.33
	0.17	0.16	0.33	97.46
	0.17	0.16	0.33	99.86
	0.17	0.16	0.32	96.57
	0.17	0.16	0.34	103.13
	0.17	0.16	0.32	98.53
Phloridzin	1.37	1.21	2.55	97.91	101.82	2.31
	1.34	1.21	2.55	100.55
	1.33	1.21	2.59	104.12
	1.29	1.21	2.52	102.37
	1.35	1.21	2.58	101.90
	1.30	1.21	2.55	104.08
Trilobatin	1.33	1.24	2.63	104.94	103.08	1.59
	1.29	1.24	2.58	104.08
	1.29	1.24	2.57	103.43
	1.25	1.24	2.50	100.92
	1.31	1.24	2.56	101.21
	1.26	1.24	2.55	103.91
Phloretin	0.09	0.08	0.17	99.88	99.45	2.83
	0.09	0.08	0.17	101.54
	0.09	0.08	0.17	102.38
	0.08	0.08	0.16	95.28
	0.09	0.08	0.17	100.84
	0.08	0.08	0.16	96. 5