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Table 2 Recovery of eight markers in Dachengqi Tang samples (n = 3)

From: Simultaneous determination of eight major bioactive compounds in Dachengqi Tang (DT) by high-performance liquid chromatography

Marker Concentrations (μg/ml) Concentration measured (μg/ml, mean (SD)) Recoverya (%) RSD b (%)
Naringin 5.0 4.87 (0.09) 97.4 1.8
50.0 50.28 (1.26) 100.6 2.5
150.0 148.95 (1.81) 99.3 1.2
Hesperidin 13.9 13. 79 (0.38) 99.2 2.8
139.0 142.42 (2.26) 102.5 1.6
417.0 419.84 (3.32) 100.7 0.7
Aloe emodin 3.66 3.76 (0.11) 102.7 2.9
36.6 36.17 (1.15) 98.8 3.2
109.8 111.73 (3.29) 101.8 2.9
Rhein 3.5 3.41 (0.09) 97.4 2.6
35.0 33.47 (0.96) 95.6 2.9
105.0 107.68 (1.41) 102.6 1.3
Honokial 2.1 2.15 (0.07) 97.6 3.3
10.5 10.18 (0.23) 97.0 2.3
60.3 61.24 (1.32) 101.6 2.2
Magnolo l 4.2 4.16 (0.11) 99.0 2.6
42.0 43.42 (1.24) 103.4 2.9
126.0 126.61 (1.86) 100.5 1.5
Emodin 2.2 2.24 (0.05) 101.8 2.2
22.0 21.54 (0.53) 97.9 2.5
66.0 67.28 (1.23) 101.9 1.8
Chrysophanol 2.06 2.11 (0.06) 102.4 2.8
20.6 20.15 (0.21) 97.8 1.0
61.8 63.42 (1.26) 102.6 2.0
  1. a Recovery (%) = mean of measured concentration/added concentration × 100
  2. b RSD (%) =(SD/mean) × 100