Data Views Exclude Ubiquitous Chemicals Activities: 187 Chemicals w/Activities: 19 All Chemicals: 42 CSV Excel PDF Previous123 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Leaf Plant Root Low PPM High PPM StdDev *Reference 0 ALKALOIDS Leaf 1000.0 12000.0 0.2 * 35 35 TANNIN Root -- 120000.0 1.36 * *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.