Data Views Total Plants: 2 CSV Excel PDF Total Activities: 3 Click on column headings to sort table by that column Plant Part All Fruit Leaf Low PPM High PPM StdDev *Reference Eucommia ulmoides Leaf -- -- * Morinda citrifolia Fruit -- 33.3 * *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.