| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Citrus sinensis | Fruit Juice | 0.01 | 0.1 | * | |
| Pelargonium graveolens | Essential Oil | -- | -- | * | |
| Malus domestica | Fruit | -- | -- | * | |
| Ficus carica | Fruit | -- | -- | * | |
| Malus domestica | Plant | -- | -- | * | |
| Ribes nigrum | Fruit | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Ananas comosus | Fruit | -- | -- | * |