Data Views Exclude Ubiquitous Chemicals Activities: 111 Chemicals w/Activities: 7 All Chemicals: 22 CSV Excel PDF Previous12 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Leaf Plant Low PPM High PPM StdDev *Reference 0 SUGAR Plant -- -- * 35 35 TANNIN Plant -- -- * *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.