Data Views Exclude Ubiquitous Chemicals Activities: 712 Chemicals w/Activities: 143 CSV Excel PDF All Chemicals: 212 Previous12345678 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Bark Flower Fruit Gum Leaf Plant Root Seed Hh Na Low PPM High PPM StdDev *Reference 77 77 ZINC Seed -- 31.0 -0.4 * 77 77 ZINC Fruit 0.45 37.5 0.22 * 77 77 ZINC Bark -- -- * *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.