| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Apium graveolens | Fruit Essent. Oil | 5000.0 | 43000.0 | -0.3 | * |
| Apium graveolens | Seed Essent. Oil | 5000.0 | 43000.0 | -1.0 | * |
| Salvia officinalis | Et | -- | 41000.0 | * | |
| Perilla frutescens | Leaf Essent. Oil | -- | 38000.0 | -0.2 | Kang, R., Helms, R., Stout, M.J., Jaber, H., Chen, Z., and Nakatsu, T. 1992. Antimicrobial Activity of the Volatile Constituents of Perilla frutescens and Its Synergistic Effects with Polygodial. J. Agric. Food Chem., 40: 2328-2330. |
| Ocimum basilicum | Essential Oil | 6800.0 | 37700.0 | -0.4 | * |
| Eucalyptus citriodora | Leaf Essent. Oil | 27000.0 | 35000.0 | -0.2 | * |
| Piper cubeba | Fruit Essent. Oil | -- | 34000.0 | -0.4 | * |
| Piper nigrum | Leaf Essent. Oil | -- | 30000.0 | -0.2 | * |
| Cinnamomum verum | Leaf Essent. Oil | -- | 18500.0 | -0.3 | * |
| Thymus vulgaris | Essential Oil | -- | 17800.0 | -0.6 | * |
| Myrrhis odorata | Leaf Essent. Oil | -- | 17000.0 | -0.3 | * |
| Syzygium aromaticum | Leaf | 2295.0 | 14520.0 | 6.8 | Charalambous, G. (Ed.). 1994. Spices, Herbs and Edible Fungi. Elsevier Science B. V. Amsterdam. 764 pp. |
| Ocimum basilicum | Shoot Essent. Oil | 2300.0 | 13900.0 | -1.1 | * |
| Pinus sylvestris | Leaf Essent. Oil | -- | 13900.0 | -0.3 | * |
| Valeriana officinalis | Leaf Essent. Oil | 2500.0 | 13600.0 | -0.3 | * |
| Cinnamomum verum | Bark Essent. Oil | -- | 13500.0 | * | |
| Aesculus hippocastanum | Flower Essent. Oil | -- | 13000.0 | Jim Duke's personal files. | |
| Rosmarinus officinalis | Shoot Essent. Oil | -- | 12200.0 | -1.1 | * |
| Salvia officinalis | Leaf Essent. Oil | -- | 11000.0 | -0.3 | * |
| Murraya koenigii | Leaf | 23.0 | 7540.0 | 3.4 | * |