| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Oenothera biennis | Seed | 26300.0 | 28068.0 | -0.6 | * |
| Dioscorea pentaphylla | Root | 1590.0 | 8565.0 | -0.6 | * |
| Phoenix dactylifera | Fruit | 400.0 | 6160.0 | -0.6 | * |
| Lycium barbarum | Fruit | -- | 6300.0 | -0.5 | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| Nelumbo nucifera | Seed | 9570.0 | 29000.0 | -0.5 | * |
| Juglans regia | Seed | 28090.0 | 29155.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Phyllanthus emblica | Fruit | 1320.0 | 6535.0 | -0.5 | * |
| Mangifera indica | Fruit | 600.0 | 6800.0 | -0.5 | * |
| Zingiber officinale | Root | 1620.0 | 9328.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Citrus sinensis | Fruit | 60.0 | 7097.0 | -0.5 | * |
| Vitis vinifera | Fruit | 1380.0 | 7099.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Calathea allouia | Root | 8825.0 | 9710.0 | -0.5 | * |
| Asimina triloba | Fruit | 622.0 | 7332.0 | -0.5 | * |
| Citrullus lanatus | Fruit | -- | 7420.0 | -0.5 | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| Avena sativa | Seed | 29000.0 | 31000.0 | -0.5 | Jim Duke's personal files.* |
| Psidium guajava | Fruit | 1070.0 | 7704.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Lactuca sativa | Leaf | 1820.0 | 30333.0 | -0.4 | * |
| Persea americana | Fruit | 1660.0 | 8045.0 | -0.4 | * |
| Foeniculum vulgare | Seed | 29560.0 | 32427.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Bertholletia excelsa | Seed | 31510.0 | 32600.0 | -0.4 | * |