Zingiber Zerumbet Identity & Plant Part
The species is Zingiber zerumbet (L.) Roscoe ex Sm., a perennial herb known as bitter ginger. The part used is the rhizome, the underground stem. The leafy shoots, the cone-shaped flower spikes and the fine roots are left out of this Zingiber zerumbet extract. Culinary ginger is Zingiber officinale, a different species, and it is supplied here as Ginger Extract Powder and as the unextracted Ginger Root Powder. Because the genus is shared, trade sheets often mix the two names, and a label that says only “ginger” does not tell a buyer which rhizome is inside. The rhizome oil of bitter ginger is dominated by the sesquiterpene ketone zerumbone, and humulene-type sesquiterpenes and flavonoid glycosides are also reported. None of them is quantified for this product.












