| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Coriandrum sativum | Fruit | -- | 770.0 | -0.2 | * |
| Stachys officinalis | Plant | -- | 5000.0 | -0.3 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Hypericum perforatum | Shoot | -- | 1000.0 | -0.3 | * |
| Citrus paradisi | Fruit | 40.0 | 51.0 | -0.3 | * |
| Citrus sinensis | Fruit | 2.0 | 50.0 | -0.3 | * |
| Citrus limon | Fruit | 21.0 | 35.0 | -0.3 | * |
| Fragaria spp | Fruit | 15.0 | 34.0 | -0.3 | Jim Duke's personal files. |
| Capsicum frutescens | Fruit | -- | 32.0 | -0.3 | * |
| Capsicum annuum | Fruit | -- | 11.0 | -0.3 | * |
| Piper nigrum | Fruit | -- | 6.0 | -0.3 | * |
| Lycopersicon esculentum | Fruit | -- | 6.0 | -0.3 | * |
| Elettaria cardamomum | Fruit | -- | 2.0 | -0.3 | * |
| Ballota nigra | Leaf | -- | 2000.0 | -0.4 | * |
| Salvia sp. | Seed | -- | 306.0 | -0.5 | Phenolic Compounds in Food and Their Effects on Health, 67. |
| Foeniculum vulgare | Seed | 0.5 | 225.0 | -0.6 | * |
| Anethum graveolens | Leaf | -- | 1140.0 | -0.6 | * |
| Origanum vulgare | Leaf | 106.0 | 1060.0 | -0.6 | * |
| Cichorium intybus | Leaf | -- | 767.0 | -0.6 | * |
| Zea mays | Shoot | -- | 0.7 | -0.7 | * |
| Aspalathus linearis | Shoot | -- | 0.66 | -0.7 | * |