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Total Plants: 480
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Plant Low PPM High PPM StdDev *Reference
Psophocarpus tetragonolobus Tuber 2320.0 5446.0 1.0 *
Psophocarpus tetragonolobus Seed 2480.0 61684.0 -0.5 *
Punica granatum Seed -- -- *
Pyrus communis Fruit 810.0 5003.0 -0.4 *
Quisqualis indica Seed 110860.0 130140.0 0.1 *
Quisqualis indica Fruit -- -- *
Raphanus sativus Root 160.0 3100.0 0.4 *
Rheum officinale Root -- -- Leung, A.Y., Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, John Wiley & Sons, New York, 1980.
Rhus toxicodendron Seed -- -- *
Ribes nigrum Seed Oil -- -- *
Ribes uva-crispa Fruit 510.0 4204.0 -0.4 *
Ribes rubrum Fruit 280.0 1744.0 -0.5 *
Ribes nigrum Seed Essent. Oil -- 120000.0 -0.7 *
Ribes nigrum Fruit 560.0 3102.0 -0.5 USDA's Ag Handbook 8 and sequelae)
Ricinus communis Seed -- -- List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979.
Robinia pseudoacacia Seed 7500.0 33250.0 -0.7 *
Rosa rubiginosa Seed Oil -- -- *
Rosa canina Seed Oil -- -- *
Rosmarinus officinalis Leaf 10240.0 31770.0 3.9 USDA's Ag Handbook 8 and sequelae)
Rubus idaeus Fruit 490.0 3665.0 -0.5 Revised USDA data received 1993.
*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.