| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Petasites hybridus | Root | -- | -- | * | |
| Sambucus nigra | Leaf | -- | -- | Jim Duke's personal files. | |
| Ligustrum japonicum | Flower | -- | -- | * | |
| Oenanthe javanica | Shoot | -- | -- | * | |
| Daucus carota | Seed | -- | -- | * | |
| Cocos nucifera | Seed Oil | -- | -- | Jim Duke's personal files. | |
| Carica papaya | Seed Oil | -- | -- | Jim Duke's personal files. | |
| Malus domestica | Seed | -- | -- | Fathy, M. M., Abd El Megid, R. M. 1995. A Comparative Study of the Lipid Contents and the Antimicrobial Activity of Certain Rosaceous Seeds. Zagazig J Pharm Sci, 4(2): 121-127. | |
| Vanilla planifolia | Fruit | -- | -- | * | |
| Harpagophytum procumbens | Tuber | -- | -- | * | |
| Pastinaca sativa | Seed | -- | -- | * | |
| Citrus paradisi | Fruit | -- | -- | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses | |
| Anabasis aphylla | Plant | -- | -- | * |