Table 1.
Precision (% RSD) and accuracy (% recovery) of new RP-HPLC for determination of curcumin
| Repeatability (intra-day), n=6 | Stock concentration (µg/ml) |
Amount found
(µg/ml) |
% RSD | % Recovery |
|---|---|---|---|---|
| 10 | 10.1 | 0.490 | 101 | |
| Curcumin | 20 | 20.1 | 0.495 | 101 |
| 50 | 49.6 | 0.306 | 99.2 | |
| Inter-day precision 3 days (n=6) | ||||
| First Day | ||||
| 10 | 10.07 | 0.638 | 100.7 | |
| 20 | 20.02 | 0.264 | 100.1 | |
| 50 | 49.89 | 0.22 | 99.78 | |
| Second Day | ||||
| 10 | 9.89 | 0.567 | 98.9 | |
| 20 | 19.87 | 0.626 | 99.35 | |
| 50 | 49.87 | 0.543 | 99.74 | |
| Third Day | ||||
| 10 | 9.999 | 0.11 | 99.99 | |
| 20 | 20.1 | 0.246 | 100.5 | |
| 50 | 50 | 0.2 | 100 |