Data Views Exclude Ubiquitous Chemicals Activities: 147 Chemicals w/Activities: 3 CSV Excel PDF All Chemicals: 9 Click on column headings to sort table by that column # Activity Chemical Part All Flower Leaf Plant Seed Low PPM High PPM StdDev *Reference 35 35 TANNIN Flower -- -- * 20 20 CHOLINE Plant -- -- * 112 112 ASCORBIC-ACID Leaf -- 1175.0 -0.33 * *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.