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Total Plants: 108
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Plant Low PPM High PPM StdDev *Reference
Malus domestica Leaf 600.0 9015.0 1.7 *
Houttuynia cordata Shoot -- 8600.0 1.0 *
Hypericum perforatum Shoot 3000.0 5240.0 -1.0 *
Hypericum perforatum Flower -- 3380.0 *
Spinacia oleracea Leaf -- 500.0 -0.5 *
Anethum graveolens Seed -- 500.0 *
Trigonella foenum-graecum Plant -- 500.0 *
Rosa canina Leaf -- 50.0 -0.6 *
Ginkgo biloba Leaf -- 0.5 -0.6 Jim Duke's personal files.
Camellia sinensis Leaf -- -- Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Piper nigrum Fruit -- -- *
Opuntia ficus-indica Pt -- -- *
Aesculus hippocastanum Seed -- -- *
Acacia catechu Plant -- -- *
Solidago gigantea Flower -- -- *
Citrullus colocynthis Fruit -- -- *
Tilia sp. Flower -- -- *
Aesculus hippocastanum Leaf -- -- *
Rosa damascena Flower -- -- *
Anethum graveolens Plant -- -- Pakistan Encyclopedia Planta Medica. 1986.
*Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.