Evidence-Based Complementary and Alternative Medicine / 2012 / Article / Tab 2

Research Article

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

Table 2

Intraday and interday precision of the reference compounds.

Compound Spiked concentration (μg/mL)Intraday ( ) Interday ( )
Detected concentration (μg/mL)RSD (%)Detected concentration (μg/mL)RSD (%)

3.53.420.35 3.41 0.18
Chlorogenic acid77.300.42 7.37 0.53
109.820.23 9.77 0.29

1.51.440.45 1.45 0.67
Caffeic acid33.040.70 3.05 0.72
4.54.490.31 4.49 0.34

3534.873.24 35.55 0.56
1,5-Dicaffeoylquinic acid7070.91 0.65 71.05 0.31
10099.41 0.72 99.08 0.14

55.15 1.03 5.18 1.48
Rutin1010.28 1.03 10.24 1.23
1514.77 0.36 14.78 0.40

0.40.38 1.25 0.38 1.28
Kaempferol-3-O-glucoside0.80.79 2.11 0.79 2.60
11.02 1.42 1.00 2.02

22.09 2.11 2.09 2.15
Quercetin43.91 1.00 3.90 1.47
66.03 0.25 6.03 0.43

1.31.29 2.92 1.29 2.42
Luteolin2.52.47 1.41 2.42 1.62
3.53.53 0.37 3.56 1.09

1.51.47 1.51 1.45 0.92
6-Methoxy-luteolin32.88 1.40 2.89 0.16
44.10 0.85 4.11 0.04

RSD: relative standard deviation (%) = (standard deviation/mean) × 100.

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