| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Vanilla planifolia | Fruit | -- | 27.0 | * | |
| Lavandula x intermedia | Plant | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Laurus nobilis | Leaf | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Capsicum frutescens | Fruit | -- | -- | * | |
| Capsicum annuum | Fruit | -- | -- | * | |
| Brassica oleracea | Stem | -- | 0.02 | * |