| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Prosopis juliflora | Seed | 35000.0 | 300000.0 | 7.6 | * |
| Olea europaea | Fruit | 64000.0 | 294000.0 | 6.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Opuntia ficus-indica | Seed | 31700.0 | 241000.0 | 5.8 | * |
| Physalis angulata | Fruit | 20000.0 | 200000.0 | 3.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Limonia acidissima | Fruit | 19000.0 | 192300.0 | 3.5 | * |
| Raphanus sativus | Root | 10000.0 | 185700.0 | 3.4 | * |
| Ribes uva-crispa | Fruit | 4000.0 | 183000.0 | 3.3 | * |
| Tetragonia tetragonioides | Leaf | 18000.0 | 300000.0 | 3.2 | * |
| Lactuca sativa | Leaf | 7700.0 | 290000.0 | 3.0 | * |
| Spinacia oleracea | Plant | 16850.0 | 285700.0 | 3.0 | * |
| Prunus domestica | Fruit | 3810.0 | 170000.0 | 2.9 | * |
| Phaseolus vulgaris | Fruit | 6000.0 | 156000.0 | 2.6 | * |
| Hordeum vulgare | Seed | 9000.0 | 132000.0 | 2.5 | Jim Duke's personal files.* |
| Ipomoea batatas | Leaf | 12000.0 | 259000.0 | 2.5 | * |
| Rumex crispus | Root | 39321.0 | 153000.0 | 2.4 | * |
| Prunus persica | Fruit | 4000.0 | 150000.0 | 2.4 | * |
| Fucus vesiculosus | Plant | 29500.0 | 250000.0 | 2.3 | * |
| Beta vulgaris | Leaf | 15000.0 | 250000.0 | 2.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Nicotiana tabacum | Leaf | 120000.0 | 250000.0 | 2.3 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Calathea macrosepala | Flower | 13000.0 | 168830.0 | 2.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |