Data Views Exclude Ubiquitous Chemicals Activities: 492 Chemicals w/Activities: 99 All Chemicals: 142 CSV Excel PDF Previous12345678 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Fruit Leaf Plant Root Seed Low PPM High PPM StdDev *Reference 77 77 ZINC Seed -- 29.0 -0.46 * 77 77 ZINC Root 2.0 72.0 2.09 * *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.