Data Views Exclude Ubiquitous Chemicals Activities: 249 Chemicals w/Activities: 20 All Chemicals: 43 CSV Excel PDF Previous123 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Fruit Plant Root Seed Low PPM High PPM StdDev *Reference 7 7 SUCCINIC-ACID Plant -- -- * 0 TETRAHYDROCOPTISINE Fruit -- 1500.0 * 11 11 TYRAMINE 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.