| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Angelica archangelica | Root | -- | 1.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Apium graveolens | Leaf | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Avena sativa | Seed | -- | -- | * | |
| Carica papaya | Fruit | -- | -- | * | |
| Citrus limon | Petiole | -- | 2.0 | * | |
| Citrus reticulata | Fruit | 7.0 | 8.0 | -0.8 | * |
| Citrus mitis | Fruit Juice | -- | 1.2 | 1.0 | * |
| Citrus sinensis | Fruit | 12.0 | 14.0 | -0.6 | * |
| Citrus aurantiifolia | Fruit | 30.0 | 80.0 | 1.4 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Citrus sinensis | Fruit Juice | -- | 0.28 | -1.0 | * |
| Hibiscus sabdariffa | Calyx | -- | -- | * | |
| Lavandula x intermedia | Plant | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Rheum palmatum | Rhizome | -- | 0.5 | * | |
| Rosa damascena | Essential Oil | -- | -- | * | |
| Sesamum indicum | Seed | -- | -- | * |