| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Alisma plantago-aquatica | Plant | -- | -- | * | |
| Zingiber officinale | Rhizome | 2.0 | 11.0 | * | |
| Anemarrhena asphodeloides | Rhizome | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Angelica sinensis | Root | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Solanum tuberosum | Tuber | 3.0 | 18.0 | USDA's Ag Handbook 8 and sequelae) | |
| Ilex paraguariensis | Leaf | -- | -- | * | |
| Asparagus officinalis | Shoot | 2.0 | 22.4 | * | |
| Brassica oleracea | Stem | 1.6 | 18.0 | * | |
| Camellia sinensis | Leaf | -- | -- | * | |
| Zea mays | Cob | 3.0 | 7.0 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Lablab purpureus | Plant | -- | -- | * |