Data Views Exclude Ubiquitous Chemicals Activities: 469 Chemicals w/Activities: 261 CSV Excel PDF All Chemicals: 525 Previous1..567891011121314 Show all rows. Paginate rows. Click on column headings to sort table by that column # Activity Chemical Part All Essential Oil Flower Inflorescence Leaf Plant Shoot Low PPM High PPM StdDev *Reference 61 61 FERULIC-ACID Plant -- -- Jim Duke's personal files. *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.