| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ceratonia siliqua | Fruit | -- | 20000.0 | -0.9 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Phragmites australis | Rhizome | -- | 58000.0 | -0.9 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Dioscorea sp. | Root | -- | 35000.0 | -0.9 | * |
| Zingiber officinale | Root | 2450.0 | 35000.0 | -0.9 | * |
| Allium sativum var. sativum | Root | 12950.0 | 35000.0 | -0.9 | * |
| Macadamia spp | Seed | 12400.0 | 17000.0 | -0.9 | * |
| Carya illinoensis | Seed | 16000.0 | 17000.0 | -0.9 | * |
| Zizyphus jujuba | Seed | 13000.0 | 17000.0 | -0.9 | * |
| Dioscorea alata | Root | 7000.0 | 35045.0 | -0.9 | * |
| Nyssa sylvatica | Stem | 15000.0 | 44000.0 | -0.9 | * |
| Spartium junceum | Stem | -- | 44000.0 | -0.9 | * |
| Morinda citrifolia | Leaf | 15000.0 | 67000.0 | -0.9 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Cyrtosperma chamissonis | Root | 5700.0 | 35925.0 | -0.9 | * |
| Passiflora incarnata | Flower | 3190.0 | 29000.0 | -0.9 | * |
| Ipomoea batatas | Root | 7000.0 | 36064.0 | -0.9 | * |
| Cenchrus biflorus | Seed | 16000.0 | 18000.0 | -0.9 | * |
| Vitellaria paradoxa | Seed | -- | 18000.0 | -0.9 | * |
| Phoenix dactylifera | Seed | 8900.0 | 18000.0 | -0.9 | * |
| Chrysophyllum cainito | Fruit | 3000.0 | 22000.0 | -0.9 | * |
| Carica papaya | Fruit | 2970.0 | 22000.0 | -0.9 | * |