Table 1.
Validation of HPLC assay of curcuminoids and sesquiterpenoids.
| Compounds | Accuracy 1 | Linearity | Correlation Coefficient (R²) | LOD (mM) | LOQ (mM) |
|---|---|---|---|---|---|
| Curcumin (1) | 104.8 ± 7.9 | y = 56,277,482x + 476,424 | 0.9951 | 0.0081 | 0.0245 |
| Demethoxycurcumin (2) | 101.0 ± 7.9 | y = 50,455,350x + 56,885 | 0.9997 | 0.0020 | 0.0061 |
| Bisdemethoxycurcumin (3) | 96.5 ± 16.2 | y = 54,929,237x + 369,859 | 0.9964 | 0.0069 | 0.0209 |
| 1,7-diphenyl-(4E,6E)-4,6-heptadien-3-ol (4) | 106.9 ± 11.6 | y = 28,237,427x + 612,834 | 0.9963 | 0.0125 | 0.0377 |
| Germacrone (5) | 97.5 ± 16.6 | y = 3,051,741x + 22,600 | 0.9977 | 0.0110 | 0.0333 |
| Furanodienone (6) | 101.9 ± 6.8 | y = 8,043,402x − 10,111 | 0.9999 | 0.0020 | 0.0060 |
| Zederone (7) | 99.9 ± 5.1 | y = 5,130,378x + 25,981 | 0.9999 | 0.0026 | 0.0080 |
| ar-Turmerone (8) | 98.5 ± 15.0 | y = 35,723,577x + 423,877 | 0.9962 | 0.0125 | 0.0379 |
1 All values are presented as the mean ± SD of triplicate determinations.