| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Origanum majorana | Plant | 1431.0 | 8204.0 | 1.0 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Vaccinium corymbosum | Fruit | 0.01 | 0.06 | -1.0 | * |
| Satureja montana | Plant | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Pogostemon cablin | Leaf | -- | -- | * | |
| Acorus calamus | Plant | -- | -- | * | |
| Artemisia capillaris | Essential Oil | -- | -- | * | |
| Lycopersicon esculentum | Fruit | -- | -- | * | |
| Ruta graveolens | Plant | -- | -- | * | |
| Vanilla planifolia | Fruit | -- | 28.0 | 1.0 | * |
| Cinnamomum aromaticum | Plant | -- | -- | * | |
| Morus alba | Plant | -- | -- | * | |
| Sesamum indicum | Seed | -- | -- | Jim Duke's personal files. | |
| Mentha pulegium | Essential Oil | -- | -- | * | |
| Tamarindus indica | Fruit Essent. Oil | -- | 1600.0 | * | |
| Alisma plantago-aquatica | Plant | -- | -- | * | |
| Cinnamomum verum | Plant | -- | -- | * | |
| Hypericum perforatum | Plant | -- | -- | * | |
| Citrus aurantium | Plant | -- | -- | * | |
| Ligustrum japonicum | Flower Essent. Oil | -- | -- | * | |
| Rheum palmatum | Rhizome | -- | 0.5 | * |