Table 2 Regression data, linear range, correlation coefficient, LOD and LOQ for marker compounds (n = 3) of GJT extract
Compound | Linear range (μg/mL) | Regression equationa | Correlation coefficient (r 2) | LODb (ng/mL) | LOQc (ng/mL) |
|---|---|---|---|---|---|
Gallic acid | 1.56–100.00 | y = 41971.92× + 834.16 | 1.0000 | 45.36 | 137.44 |
Albiflorin | 1.56–100.00 | y = 11838.31× + 1993.39 | 0.9999 | 197.61 | 598.81 |
Paeoniflorin | 1.56–100.00 | y = 14000.91× - 3078.78 | 1.0000 | 167.08 | 506.32 |
Liquiritin apioside | 1.56–100.00 | y = 16282.26× + 2703.99 | 0.9999 | 107.59 | 326.03 |
Liquiritin | 1.56–100.00 | y = 18152.25× + 2757.62 | 0.9999 | 96.51 | 292.45 |
Benzoic acid | 1.56–100.00 | y = 45334.92× + 22784.19 | 0.9997 | 51.60 | 156.37 |
Coumarin | 1.56–100.00 | y = 49833.92× + 8656.87 | 0.9999 | 35.15 | 106.53 |
Benzoylpaeoniflorin | 0.31–20.00 | y = 28757.81× + 814.63 | 0.9999 | 81.35 | 246.50 |
Cinnamic acid | 0.31–20.00 | y = 61499.33× + 3384.72 | 1.0000 | 28.49 | 86.32 |
Cinnamaldehyde | 1.56–100.00 | y = 131035.51× + 59890.08 | 0.9997 | 9.15 | 27.73 |
Glycyrrhizin | 1.56–100.00 | y = 8787.34× + 4482.00 | 1.0000 | 40.39 | 122.40 |
6-Gingerol | 0.31–20.00 | y = 5693.60× + 109.67 | 1.0000 | 258.61 | 783.66 |