Table 1 The intra-day and inter-day precision and accuracy for determination of curcuminoids
Present (g/100 g) | Added (g/100 g) | Found (g/100 g) | Accuracy (%) | Precision (RSD%) | |
|---|---|---|---|---|---|
Intra-day | |||||
Bisdemethoxycurcumin | 0.095 | 0.096 | 0.097 ± 0.0001 | 101.08 | 0.13 |
Demethoxycurcumin | 0.247 | 0.262 | 0.257 ± 0.0003 | 98.15 | 0.10 |
Curcumin | 0.993 | 1.066 | 1.022 ± 0.002 | 95.84 | 0.13 |
Inter-day | |||||
Bisdemethoxycurcumin | 0.095 | 0.096 | 0.098 ± 0.001 | 101.74 | 0.59 |
Demethoxycurcumin | 0.247 | 0.262 | 0.257 ± 0.001 | 97.96 | 0.48 |
Curcumin | 0.993 | 1.066 | 1.021 ± 0.003 | 95.78 | 0.30 |