| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Panax ginseng | Root | 0.12 | 320.0 | 1.0 | * |
| Angelica archangelica | Root | -- | 146.0 | -1.0 | * |
| Zingiber officinale | Rhizome | 87.0 | 169.0 | * | |
| Coix lacryma-jobi | Seed | -- | -- | Hutchings, A, Scott, AH, Lewis, G, and Cunningham, A. 1996. Zulu Medicinal Plants. An inventory. University of Natal Press, Pietermaritzburg. 450 pp. | |
| Panax quinquefolius | Plant | -- | -- | * | |
| Allium sativum var. sativum | Bulb | -- | 0.3 | * | |
| Ganoderma lucidum | Fruit | -- | 4.9 | * | |
| Camellia sinensis | Leaf | -- | -- | * |