| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Prunus dulcis | Seed | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Prunus cerasus | Plant | -- | -- | * | |
| Serenoa repens | Fruit | -- | -- | * | |
| Sesamum indicum | Seed Oil | -- | -- | * | |
| Sesamum indicum | Seed | -- | -- | * | |
| Solanum tuberosum | Fruit | -- | -- | * | |
| Solanum dulcamara | Tissue Culture | -- | -- | * | |
| Zea mays | Plant | -- | -- | Stitt, Paul. Why George should eat broccoli. |