| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Tamarindus indica | Fruit | 625000.0 | 925000.0 | 0.8 | * |
| Cenchrus biflorus | Seed | 623000.0 | 691000.0 | 0.7 | * |
| Vigna unguiculata | Seed | 619000.0 | 676095.0 | 0.6 | USDA's Ag Handbook 8 and sequelae) |
| Sanguisorba minor | Plant | 616000.0 | 804000.0 | 0.8 | * |
| Vigna aconitifolia | Seed | 615200.0 | 681134.0 | 0.6 | * |
| Hordeum vulgare | Seed | 608000.0 | 868000.0 | 1.4 | Jim Duke's personal files.* |
| Cicer arietinum | Seed | 606600.0 | 685700.0 | 0.6 | USDA's Ag Handbook 8 and sequelae) |
| Origanum majorana | Plant | 605600.0 | 654050.0 | -0.1 | USDA's Ag Handbook 8 and sequelae) |
| Coffea arabica | Seed | 600000.0 | 728000.0 | 0.8 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Lens culinaris | Seed | 597000.0 | 642800.0 | 0.5 | * |
| Vigna mungo | Seed | 594000.0 | 660000.0 | 0.5 | * |
| Lepidium meyenii | Root | 590000.0 | 750000.0 | -1.0 | * |
| Phaseolus acutifolius | Seed | 590000.0 | 742000.0 | 0.9 | * |
| Lycium barbarum | Fruit | 580000.0 | 640000.0 | -0.8 | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| Tilia sp. | Leaf | 575000.0 | 653000.0 | 0.3 | * |
| Cyamopsis tetragonoloba | Leaf | 574000.0 | 707000.0 | 0.8 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Avena sativa | Seed | 562000.0 | 775000.0 | 1.0 | * |
| Anethum graveolens | Plant | 558200.0 | 602000.0 | -0.5 | * |
| Syzygium aromaticum | Bark | 555000.0 | 612000.0 | -1.4 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Anethum graveolens | Seed | 551700.0 | 597491.0 | 0.3 | * |