| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Aspalathus linearis | Shoot | -- | 25000.0 | -1.8 | * |
| Catha edulis | Leaf | -- | 16000.0 | -1.8 | * |
| Bacopa monnieri | Shoot | -- | 19000.0 | -1.9 | Wealth of India. |
| Cinnamomum verum | Bark | -- | 17000.0 | -2.0 | Wealth of India. |
| Juglans nigra | Pericarp | 3480.0 | 29000.0 | * | |
| Phytelephas aequatorialis | Mesocarp | 18200.0 | 154295.0 | KOZIOL & PEDERSEN. 1993. PHYTELEPHAS AEQUATORIALIS(ARECACEAE) IN HUMAN AND ANIMAL NUTRITION. ECON. BOT. 47:401-307. | |
| Asclepias syriaca | Latex Exudate | -- | 12300.0 | * | |
| Citrus mitis | Fruit Juice | 6200.0 | 62000.0 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. | |
| Cimicifuga racemosa | Root | -- | -- | * | |
| Aloe spp. | Leaf | -- | -- | * | |
| Quercus suber | Cork | 1000.0 | 40000.0 | * | |
| Olea europaea | Twig | -- | 85000.0 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |