Table 12.
Characterisation of the fraction of secondary metabolites (including volatiles) of turmeric tincture (Curcuma longa L.) based on the analysis of six batches (mean and range). The results are expressed as μg/mL of turmeric tincture
| Constituent | CAS No | FLAVIS No | Meana | Range |
|---|---|---|---|---|
| μg/mL | μg/mL | |||
| Phenols (as gallic acid equivalent) | – | – | 1,278 | 1,060–1,489 |
| Total curcuminoidsb (as curcumin) | – | – | 597 | 464–798 |
| Curcuminoidsc | – | – | 417 | 304–581 |
| Curcumin (I) | 458‐37‐7 | – | 114 | 83–182 |
| Desmethoxycurcumin (II) | 33171‐16‐3 | – | 127 | 80–175 |
| Bis‐desmethoxycurcumin (III) | 33171‐05‐0 | – | 177 | 139–224 |
| Essential oil | – | – | 1,295 | 1,176–1,537 |
| ar‐Turmerone | – | 419 | 349–507 | |
| Turmerone | – | 202 | 77–298 | |
| β‐Turmerone (curlone) | – | 166 | 119–222 | |
| 1,8 Cineole | 03.001 | 27.2 | 8–111 | |
| α‐Terpineol | 02.014 | 4.2 | 2–9 | |
| α‐Farnesene | 01.040 | 2.4 | 2–3 | |
| Total unidentified | – | – | 475 | 435–524 |
a
Mean calculated on five batches.
b
Determined by spectrophotometry as dicinnamoyl methane derivatives.
c
Determined by high‐performance liquid chromatography (HPLC).