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Total Plants: 59
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Plant Low PPM High PPM StdDev *Reference
Caulophyllum thalictroides Root 17600.0 160000.0 2.2 *
Ceratonia siliqua Seed -- 350000.0 1.9 List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Ferula assa-foetida Plant -- 250000.0 1.4 Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Turnera diffusa Leaf 31500.0 150000.0 1.1 *
Piper cubeba Fruit -- 80000.0 1.0 Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Panax ginseng Root 27560.0 130000.0 1.0 *
Bupleurum chinense Root 13200.0 120000.0 0.6 *
Valeriana officinalis Root 14160.0 120000.0 0.6 *
Eriodictyon californicum Leaf 26400.0 120000.0 0.5 *
Asparagus officinalis Root 11000.0 110000.0 0.2 *
Sclerocarya caffra Leaf -- 100000.0 0.0 *
Larrea tridentata Plant 39480.0 120000.0 -0.0 *
Scutellaria lateriflora Plant 10960.0 120000.0 -0.0 *
Plantago major Seed 30000.0 100000.0 -0.0 *
Symphytum officinale Root 50000.0 100000.0 -0.3 *
Astragalus membranaceus Root 16000.0 100000.0 -0.3 *
Hyoscyamus niger Seed -- 62000.0 -0.3 *
Parthenium integrifolium Root 14400.0 90000.0 -0.7 *
Hydrangea arborescens Root 31500.0 90000.0 -0.7 *
Tragopogon porrifolius Seed -- 10000.0 -0.7 *
*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.