| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Triticum aestivum | Oil | 1508.0 | 2170.0 | 2.5 | * |
| Rheum rhabarbarum | Leaf | 1197.0 | 1238.0 | 3.1 | * |
| Phaseolus vulgaris | Leaf | 698.0 | 719.0 | 1.3 | Jim Duke's personal files.* |
| Brassica oleracea var. sabellica l. | Leaf | 359.0 | 785.0 | 1.5 | * |
| Beta vulgaris | Leaf | 321.0 | 439.0 | 0.4 | Jim Duke's personal files.* |
| Urtica dioica | Seed | 230.0 | 380.0 | 0.5 | Blaschek, W., Hansel, R., Keller, K., Reichling, J., Rimpler, H., and Schneider, G. eds. 1998. Hager's Handbuch der Pharmazeutischen Praxis, Auflage Band 2 (A-K), 909 pp., (L-Z), 858 pp. Springer-Verlag, Berlin. |
| Prunus dulcis | Seed | 150.0 | 275.0 | 0.1 | * |
| Apium graveolens | Leaf | 136.0 | 266.0 | -0.2 | * |
| Trifolium pratense | Inflorescence | 126.0 | 400.0 | * | |
| Lycium chinense | Leaf | 94.0 | 177.0 | -0.5 | * |
| Zea mays | Oil | 90.0 | 257.0 | -0.3 | * |
| Arachis hypogaea | Seed | 83.0 | 116.0 | -0.4 | * |
| Elaeis guineensis | Fruit | 75.0 | 125.0 | 0.8 | Abstract (See species file) |
| Pistacia vera | Seed | 52.0 | 54.0 | -0.6 | * |
| Rosa canina | Fruit | 41.0 | 204.0 | 2.0 | * |
| Petroselinum crispum | Leaf | 36.0 | 252.0 | -0.3 | * |
| Glycine max | Leaf | 29.0 | 280.0 | -0.2 | Jim Duke's personal files.* |
| Medicago sativa | Plant | 26.0 | 257.0 | 1.0 | * |
| Ribes nigrum | Fruit | 22.0 | 120.0 | 0.7 | * |
| Capsicum annuum | Fruit | 22.0 | 284.0 | 3.2 | * |