| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Thymus vulgaris | Leaf | -- | 16900.0 | 1.6 | * |
| Vaccinium myrtillus | Fruit | -- | -- | * | |
| Vaccinium myrtillus | Fruit Juice | -- | -- | * | |
| Allium cepa | Bulb | -- | -- | * | |
| Salvia sp. | Seed | -- | 306.0 | -0.5 | Phenolic Compounds in Food and Their Effects on Health, 67. |
| Ipomoea batatas | Root | -- | -- | * | |
| Centaurium erythraea | Plant | -- | -- | * | |
| Astragalus membranaceus | Root | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Trifolium pratense | Leaf | -- | -- | * | |
| Ananas comosus | Fruit | -- | -- | Wealth of India. | |
| Origanum majorana | Shoot | -- | -- | * | |
| Origanum majorana | Leaf | -- | 14100.0 | 1.2 | * |
| Solanum torvum | Plant | -- | -- | * | |
| Artemisia dracunculus | Shoot | -- | -- | * | |
| Stellaria media | Shoot | -- | -- | * | |
| Cynara cardunculus | Flower | -- | -- | * | |
| Menyanthes trifoliata | Leaf | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Salvia officinalis | Inflorescence | -- | -- | * | |
| Apium graveolens | Root | -- | -- | * | |
| Theobroma cacao | Seed | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |