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Total Plants: 189
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Plant Low PPM High PPM StdDev *Reference
Styrax tonkinensis Gum 700000.0 800000.0 1.0 Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Boswellia sacra Latex Exudate 600000.0 700000.0 0.9 Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Thevetia peruviana Latex Exudate 674000.0 697000.0 0.9 ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.
Ferula assa-foetida Plant 400000.0 640000.0 3.1 Tucker, A. O. and Debaggio, T. 2000. The Big Book of Herbs. Interweave Press, Inc. Loveland, CO. 688 pp.
Copaifera spp Gum 60000.0 540000.0 -1.0 *
Commiphora myrrha Resin, Exudate, Sap 200000.0 400000.0 Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Manilkara zapota Latex Exudate -- 380000.0 -0.3 Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981.
Veratrum album Rhizome -- 250000.0 1.0 *
Maclura pomifera Fruit 166640.0 216900.0 2.0 Smith, J. L. and Perino, J. V. 1981. Osage Orange (Maclura pomifera): History and Economic Uses. Economic Botany 35(1): 24-41
Podophyllum hexandrum Rhizome 60000.0 200000.0 0.4 *
Grindelia squarrosa Plant -- 200000.0 0.3 *
Guaiacum sp. Wood -- 200000.0 1.3 *
Larrea tridentata Plant 49350.0 200000.0 0.3 *
Ipomoea purga Tuber 100000.0 200000.0 *
Leonotis leonurus Plant -- 198000.0 0.3 *
Opopanax chironium Plant -- 190000.0 0.3 List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Opopanax chironium Hh -- 190000.0 *
Cryptostegia grandifolia Seed -- 175000.0 1.9 *
Ferula sumbul Plant -- 170000.0 0.2 List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Croton eluteria Bark -- 150000.0 1.6 *
*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.