Peak no. | Compounds | Retention time | Regression equation | Precision experiment | Repeatability | Recovery experiment | |||
---|---|---|---|---|---|---|---|---|---|
Area of peak | RSD (%) | Area of peak | RSD (%) | Average recovery rate | RSD (%) | ||||
1 | tannin acid | 6.794 | Y = 19,106x + 31.263 (R2 = 0.9996) | 2492.6 ± 10.1 | 0.41 | 159.4 ± 33.44 | 2.09 | 105.57 ± 1.75 | 1.36 |
2 | theophyline | 15.605 | Y = 30,252x-13.334 (R2 = 0.9995) | 3753 ± 5.9 | 0.20 | 1346.8 ± 53.74 | 2.22 | 102.86 ± 1.25 | 1.18 |
3 | caffeic acid | 27.98 | Y = 31,908x + 31.065 (R2 = 0.9994) | 4172.2 ± 8.2 | 0.20 | 625.26 ± 17.25 | 2.75 | 98.36 ± 0.36 | 0.34 |
4 | ellagic acid | 35.447 | Y = 206,229x + 1865.8 (R2 = 0.9984) | 22,707.5 ± 103.3 | 0.34 | 20,841.7 ± 232.01 | 1.11 | 102.54 ± 2.83 | 2.75 |