| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Agave sisalana | Leaf | -- | -- | Wealth of India. | |
| Agave americana | Flower | -- | 5000.0 | * | |
| Solanum torvum | Fruit | -- | -- | * | |
| Gardenia jasminoides | Fruit | -- | -- | * | |
| Tribulus terrestris | Plant | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |