| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Peumus boldus | Leaf | -- | -- | Phenolic Compounds in Food and Their Effects on Health. Antioxidants & Cancer Prevention. Huang, M.T., Ho, C.T. and Lee, C.Y. eds. 1992. ACS Symposium Series 507.ACS, Washington 402 pp. | |
| Guatteria scadens | Fruit Essent. Oil | -- | 80000.0 | Grenand, P., Moretti, C., and Jacquemin, H. 1987. Pharmacopees Traditionnelles en Guyane. l'ORSTROM, Paris. 569 pp. | |
| Eschscholzia californica | Shoot | -- | 80.0 | * | |
| Peumus boldus | Plant | -- | -- | * |