| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Chenopodium album | Plant | 140000.0 | 300000.0 | 2.0 | * |
| Averrhoa carambola | Fruit | 50000.0 | 95800.0 | 5.0 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |
| Rumex crispus | Leaf | 5170.0 | 6970.0 | -0.3 | * |
| Spinacia oleracea | Leaf | 5000.0 | 93900.0 | 2.3 | * |
| Rheum rhabarbarum | Pt | 4400.0 | 13360.0 | * | |
| Piper nigrum | Fruit | 4000.0 | 34000.0 | 1.6 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Rheum rhabarbarum | Leaf | 3000.0 | 11000.0 | -0.2 | * |
| Stellaria media | Shoot | 2950.0 | 4330.0 | * | |
| Camellia sinensis | Leaf | 2192.0 | 10000.0 | -0.2 | * |
| Portulaca oleracea | Plant | 1679.0 | 16790.0 | -0.4 | * |
| Theobroma cacao | Seed | 1520.0 | 5000.0 | 0.3 | * |
| Tamarindus indica | Leaf | 1000.0 | 1960.0 | -0.4 | * |
| Capsicum annuum | Fruit | 257.0 | 1171.0 | -0.2 | Watt, J.M. and Breyer-Brandwijk, M.G. 1962. The Medicinal and Poisonous Plants of Southern and Eastern Africa. E. & S. Livingstone, Ltd. Edinburg & London. 1457 pp. |
| Lactuca sativa | Leaf | 110.0 | 136.0 | -0.5 | * |
| Physalis ixocarpa | Fruit | 109.0 | 536.0 | -0.3 | * |
| Ananas comosus | Fruit | 50.0 | 58.0 | -0.3 | * |
| Lycopersicon esculentum | Fruit | 36.0 | 263.0 | -0.3 | * |
| Brassica oleracea var. capitata l. | Leaf | 30.0 | 350.0 | -0.5 | * |
| Murraya sp | Fruit | 22.0 | 5240.0 | -0.0 | * |
| Musa x paradisiaca | Fruit | 22.0 | 5240.0 | -0.0 | Watt, J.M. and Breyer-Brandwijk, M.G. 1962. The Medicinal and Poisonous Plants of Southern and Eastern Africa. E. & S. Livingstone, Ltd. Edinburg & London. 1457 pp. |