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Total Plants: 210
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Plant Low PPM High PPM StdDev *Reference
Brassica oleracea var. botrytis l. Flower 2650.0 34240.0 *
Phaseolus lunatus Seed 8810.0 33820.0 -0.3 USDA's Ag Handbook 8 and sequelae)
Portulaca oleracea Herb 1500.0 33792.0 -1.0 *
Ipomoea aquatica Leaf 2520.0 33465.0 -0.2 *
Chenopodium album Leaf 5210.0 33188.0 -0.3 *
Bertholletia excelsa Seed 31510.0 32600.0 -0.4 *
Foeniculum vulgare Fruit 29560.0 32427.0 1.5 *
Foeniculum vulgare Seed 29560.0 32427.0 -0.4 USDA's Ag Handbook 8 and sequelae)
Avena sativa Seed 29000.0 31000.0 -0.5 Jim Duke's personal files.*
Beta vulgaris Root 3930.0 30994.0 1.3 USDA's Ag Handbook 8 and sequelae)
Lactuca sativa Leaf 1820.0 30333.0 -0.4 *
Juglans regia Seed 28090.0 29155.0 -0.5 USDA's Ag Handbook 8 and sequelae)
Nelumbo nucifera Seed 9570.0 29000.0 -0.5 *
Valerianella locusta Plant 2030.0 28195.0 0.6 *
Oenothera biennis Seed 26300.0 28068.0 -0.6 *
Abelmoschus esculentus Fruit 2710.0 27100.0 1.1 USDA's Ag Handbook 8 and sequelae)
Cichorium endivia Leaf 1660.0 26731.0 -0.6 *
Helianthus tuberosus Tuber -- 26493.0 1.0 Izadoost, M. & Robinson, T., Synergism & antagonism in the pharmacology of alkaloidal plants, pp 137-58 in Craker, L. & Simon, J., eds., Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture & Pharmacology, v. 2, 1987, 255pp.
Zea mays Seed 6360.0 26457.0 -0.6 USDA's Ag Handbook 8 and sequelae)
Raphanus sativus Root 1320.0 25580.0 0.9 *
*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.