Data Views Total Plants: 201 CSV Excel PDF Total Activities: 1 , Previous1..234567891011 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Bud Bulb Endosperm Flower Fruit Fruit Juice Herb Leaf Plant Rhizome Root Seed Shoot Sprout Seedling Tuber Pt Low PPM High PPM StdDev *Reference Zingiber officinale Root 450.0 2596.0 -0.4 USDA's Ag Handbook 8 and sequelae) *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.