| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Justicia pectoralis | Leaf | -- | 2013.0 | 9.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Aegle marmelos | Fruit | 12.0 | 31.0 | 5.6 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Benincasa hispida | Fruit | 0.1 | 28.0 | 4.9 | * |
| Theobroma speciosum | Fruit | 10.0 | 27.0 | 4.7 | J Cell Biochem VOL. 22=1995 |
| Asparagus officinalis | Root | 2.4 | 24.0 | 4.4 | * |
| Glycine max | Seed | 1.7 | 13.0 | 3.6 | * |
| Armoracia rusticana | Root | 4.0 | 20.0 | 3.5 | * |
| Avena sativa | Seed | 0.66 | 11.7 | 3.1 | Jim Duke's personal files.* |
| Capsicum annuum | Fruit | -- | 19.0 | 3.0 | * |
| Thymus vulgaris | Plant | 4.0 | 53.0 | 2.9 | * |
| Anacardium occidentale | Fruit | 2.4 | 16.7 | 2.5 | * |
| Spirulina spp. | Plant | -- | 46.0 | 2.4 | * |
| Spirulina pratensis | Plant | -- | 46.0 | 2.4 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Prunus dulcis | Seed | 1.6 | 9.7 | 2.4 | USDA's Ag Handbook 8 and sequelae) |
| Elaeagnus umbellatus | Fruit | 2.9 | 16.0 | 2.4 | * |
| Hordeum vulgare | Seed | 1.0 | 9.0 | 2.1 | Jim Duke's personal files.* |
| Berberis vulgaris | Bark | -- | 9.4 | 2.1 | * |
| Cucurbita pepo | Flower | 0.7 | 15.0 | 2.1 | USDA's Ag Handbook 8 and sequelae) |
| Phytolacca americana | Shoot | 3.0 | 39.0 | 2.0 | * |
| Triticum aestivum | Plant | 11.0 | 40.0 | 2.0 | * |