Data Views Exclude Ubiquitous Chemicals Activities: 390 Chemicals w/Activities: 48 All Chemicals: 141 CSV Excel PDF Previous12345678 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Bud Flower Plant Rhizome Root Shoot Pt Low PPM High PPM StdDev *Reference 77 77 ZINC Plant 21.0 60.0 0.08 Chem. & Pharm. Bull. 38: 2205. *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.