Inulae Flos and Its Compounds Inhibit TNF-α- and IFN-γ-Induced Chemokine Production in HaCaT Human Keratinocytes

Table 3

Recovery of the reference compounds (𝑛=3).

Compound	Initial concentration (μg/mL)	Spiked concentration (μg/mL)	Detected concentration (μg/mL)	Recovery (%)	RSD (%)
		3.5	3.65	104.23	0.71
Chlorogenic acid	9.75	7	7.78	111.13	0.35
		10	10.36	103.65	1.77
		1.5	1.56	103.68	2.90
Caffeic acid	3.74	3	3.28	109.29	1.41
		4.5	4.85	107.71	1.50
		35	34.95	99.85	2.36
1,5-Dicaffeoylquinic acid	78.08	70	71.16	101.66	1.19
		100	98.19	98.19	0.44
		5	5.28	105.64	0.89
Rutin	10.77	10	10.49	104.92	1.82
		15	14.73	98.23	0.86
		0.4	0.40	99.60	1.66
Kaempferol-3-O-glucoside	0.86	0.8	0.83	103.36	1.75
		1	1.06	105.86	2.05
		2	2.05	102.51	2.47
Quercetin	4.10	4	3.86	96.52	0.87
		6	5.90	98.27	1.08
		1.3	1.33	102.32	1.56
Luteolin	1.94	2.5	2.49	99.67	1.49
		3.5	3.56	101.74	1.03
		1.5	1.41	93.88	1.20
6-Methoxy-luteolin	2.86	3	2.79	93.09	0.43
		4	4.00	99.95	2.55