Quality Assessment of Ojeok-San, a Traditional Herbal Formula, Using High-Performance Liquid Chromatography Combined with Chemometric Analysis

Table 4

Recovery of the marker compounds of OJS ().

Compound	Initial concentration (g/mL)	Spiked concentration (g/mL)	Detected concentration (g/mL)	Recovery (%)	RSD (%)^a
Gallic acid	1.90	1.00	2.88	98.05	2.28
		2.00	3.82	96.15	3.65
Protocatechuic acid	0.39	1.00	1.41	102.22	1.75
		2.00	2.47	104.16	0.88
Chlorogenic acid	6.52	2.00	8.37	92.74	1.21
		4.00	10.36	95.89	1.08
Albiflorin	3.62	2.00	5.57	97.19	1.41
		4.00	7.61	99.59	2.80
Paeoniflorin	15.89	10.00	25.84	99.54	1.86
		20.00	34.91	95.12	0.78
Ferulic acid	3.75	2.00	5.65	95.33	1.09
		4.00	7.53	94.58	0.24
Liquiritin	16.01	5.00	20.98	99.43	1.74
		10.00	25.16	91.55	0.43
Benzoic acid	6.72	3.00	9.59	95.74	1.91
		6.00	12.84	101.90	1.70
Nodakenin	8.98	5.00	13.74	95.28	1.03
		10.00	18.40	94.27	0.77
Hesperidin	61.70	20.00	81.66	99.77	0.28
		40.00	99.80	95.26	0.56
Naringin	62.30	20.00	82.34	100.19	0.72
		40.00	99.63	93.32	0.38
Neohesperidin	36.31	15.00	50.24	92.90	0.18
		30.00	66.90	101.97	0.07
Ononin	0.56	1.00	1.50	94.75	0.05
		2.00	2.52	98.29	0.35
Oxypeucedanin hydrate	7.18	1.00	8.11	93.19	2.25
		2.00	9.14	97.97	2.43
Cinnamic acid	0.94	1.00	1.92	97.97	0.84
		2.00	2.93	99.43	0.25
Byakangelicin	4.95	1.00	5.94	99.43	1.40
		2.00	6.96	100.58	1.67
Cinnamaldehyde	1.66	1.05	2.63	92.64	1.97
		2.10	3.66	95.06	1.17
Benzoylpaeoniflorin	0.38	1.00	1.39	100.55	1.19
		2.00	2.40	100.85	1.95
Glycyrrhizin	23.08	3.00	26.00	97.50	0.47
		6.00	29.19	101.91	0.83

RSD (%) = (SD/mean) 100.