| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Humulus lupulus | Essential Oil | -- | -- | * | |
| Humulus lupulus | Fruit | -- | -- | Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980. | |
| Allium sativum var. sativum | Bulb | -- | -- | * |