| Plant Sample/
Commercial Products |
Analytes |
Serving
size |
Servings/day |
Ave. wt of each capsule content/tablet (mg) |
C. longa L. (Amount, mg)/serving |
| 1 |
2 |
3 |
4 |
| CL-1 |
2.74 (0.16) |
1.15 (0.19) |
1.03
(0.24) |
0.73 (0.12) |
- |
- |
- |
- |
| CL-2 |
0.75 (0.09) |
0.25 (0.83) |
0.16 (0.65) |
1.32 (0.12) |
- |
- |
- |
- |
| CL-3 |
0.91 (0.29) |
0.32 (0.79) |
0.23 (0.41) |
0.51 (0.71) |
- |
- |
- |
- |
| CZ |
0.00031 (0.91) |
0.003
(0.42) |
0.00055 (0.26) |
ND |
- |
- |
- |
- |
| CP |
0.0002 (2.13) |
0.0004 (1.45) |
DUL |
ND |
- |
- |
- |
- |
| CW |
ND |
ND |
ND |
ND |
- |
- |
- |
- |
| CK |
ND |
ND |
ND |
ND |
- |
- |
- |
- |
| CLP-1 |
0.699
(0.23) |
0.322
(0.09) |
0.220
(0.13) |
0.271
(0.16) |
2 capsules |
1 |
827.5 |
1440 |
| CLP-2 |
1.186
(0.12) |
0.405
(0.07) |
0.305
(0.56) |
0.632
(0.10) |
1 capsule |
1-3 |
798.2 |
250 mg extract +250 mg root |
| CLP-3 |
1.138
(0.04) |
0.373
(0.21) |
0.279
(0.08) |
0.575
(0.03) |
1 capsule |
3-6 |
510.9 |
400 |
| CLP-4 |
0.467
(0.12) |
0.203
(0.097) |
0.155
(0.04) |
0.187
(0.06) |
2 capsules |
1 |
832.9 |
1440 |
| CLP-5 |
10.848
(1.54) |
2.845
(2.60) |
0.913
(0.85) |
1.100
(0.31) |
2 capsules |
2 |
528.9 |
350 mg rhizome + 100 mg extract |
| CLP-6 |
27.669
(0.17) |
5.818
(2.15) |
1.884
(1.78) |
0.291
(0.53) |
1 tablet |
3 |
911.9 |
450 |
|
DUL = Detected under limits of quantification
ND = Not Detected
Mean (n=3) ± relative standard deviation (% CV) are given in parentheses. |
| Table 3: Content (%, w/w) of curcumins in Curcuma samples (mg/100 mg dried material) and dietary supplements (mg/average wt of capsule) using UPLC-UV method:
curcumin (1), desmethoxycurcumin (2), bisdesmethoxycurcumin (3) and ar-turmerone (4). |
