| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Zea mays | Husk Essent. Oil | -- | 50000.0 | * | |
| Psidium guajava | Fruit | -- | 32000.0 | * | |
| Camellia sinensis | Shoot | 5500.0 | 10300.0 | * | |
| Zea mays | Silk Essent. Oil | 2000.0 | 10000.0 | * | |
| Juglans nigra | Essential Oil | -- | 9000.0 | * | |
| Zingiber officinale | Rhizome Essent. Oil | 2.0 | 700.0 | * | |
| Zingiber officinale | Rhizome | 2.0 | 35.0 | * | |
| Vaccinium corymbosum | Fruit Juice | -- | -- | * | |
| Syzygium aromaticum | Fruit | -- | -- | * | |
| Sambucus nigra | Flower Essent. Oil | -- | -- | * | |
| Petroselinum crispum | Leaf | -- | -- | * | |
| Centella asiatica | Shoot | -- | -- | Jim Duke's personal files. | |
| Tagetes minuta | Leaf Essent. Oil | -- | -- | Zygadlo, J. S., Guzman, C. A., Grosso, N. R. 1994. Antifungal Properties of the Leaf Oils of Tagetes Minuta L. and T. filifolia Lag. J. Essent. Oil Res. 6 6: 617-621. Cat Quim Org Fac Cien Exact Univ Nacion Cordoba Cordoba 5000 Argentina. | |
| Capsicum annuum | Fruit | -- | -- | * | |
| Glycine max | Plant | -- | -- | * | |
| Tanacetum parthenium | Fruit Essent. Oil | -- | -- | * | |
| Triticum aestivum | Shoot | -- | -- | * | |
| Ocimum basilicum | Shoot Essent. Oil | -- | -- | * | |
| Zea mays | Plant | -- | -- | * | |
| Citrullus lanatus | Fruit | -- | -- | * | |
| Citrullus lanatus | Fruit Juice | -- | -- | * | |
| Apium graveolens | Shoot | -- | -- | * | |
| Mentha spicata | Essential Oil | -- | -- | * | |
| Rosmarinus officinalis | Resin, Exudate, Sap | -- | -- | * | |
| Fagopyrum esculentum | Seed | -- | -- | * | |
| Avena sativa | Seed | -- | -- | * | |
| Zea mays | Leaf | -- | -- | * | |
| Zea mays | Shoot | -- | -- | * | |
| Mentha spicata | Leaf | -- | -- | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. | |
| Zea mays | Hull Husk | -- | -- | * | |
| Zea mays | Seed Essent. Oil | -- | -- | * | |
| Helianthus annuus | Seed | -- | -- | * | |
| Panax ginseng | Shoot | -- | -- | * |