Table 2.
Intra- and interday repeatability and recovery of the three major stilbenes in mulberry.
| Compound | Repeatability (n = 6) | Recovery (n = 6) | ||||
|---|---|---|---|---|---|---|
| Intraday Mean ± S.D.a |
R.S.D. (%) | Interday Mean ± S.D. |
R.S.D. (%) | Mean (%)b |
R.S.D. (%)c |
|
| 1 | 1140.2 ± 12.5 | 1.1 | 1138.0 ± 14.8 | 1.3 | 103.5 | 2.4 |
| 2 | 840.3 ± 9.2 | 1.1 | 846.4 ± 14.4 | 1.7 | 102.4 | 1.9 |
| 3 | 61.2 ± 0.9 | 1.5 | 60.8 ± 1.4 | 2.3 | 100.0 | 2.3 |
aData were μg constituents per gram drug.
bCalculated as detected amount/added amount × 100%. Data were means of six experiments.
cR.S.D. (%) = (S.D./mean) × 100.