| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ocimum basilicum | Shoot Essent. Oil | -- | 1700.0 | * | |
| Matricaria recutita | Plant | -- | -- | Kameoka, H. and Nakai, K. 1987. Components of essential oil from the root of Glycyrrhiza-glabra. Nippon Gogeikagaku Kaishi 61(9): 1119-1122. | |
| Ficus carica | Leaf | -- | -- | Blaschek, W., Hansel, R., Keller, K., Reichling, J., Rimpler, H., and Schneider, G. eds. 1998. Hager's Handbuch der Pharmazeutischen Praxis, Auflage Band 2 (A-K), 909 pp., (L-Z), 858 pp. Springer-Verlag, Berlin. | |
| Chamaemelum nobile | Plant | -- | -- | * | |
| Camellia sinensis | Leaf | -- | -- | * | |
| Averrhoa carambola | Fruit | -- | -- | * | |
| Agathosma betulina | Leaf Essent. Oil | -- | -- | * |