| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Curcuma longa | Tuber | -- | -- | * | |
| Curcuma longa | Rhizome | -- | -- | * | |
| Curcuma zedoaria | Rhizome | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Curcuma longa | Rhizome Essent. Oil | -- | 11900.0 | * | |
| Curcuma longa | Essential Oil | -- | 11900.0 | * |