Yield and Chemical Composition of the Essential Oil of the Stems and Rhizomes of<i>Cyperus articulatus</i>L. Cultivated in the State of Pará, Brazil

Abstract The volatile constituents from the stems and rhizomes of Cyperus articulatus, cultivated in the state of Pará, Brazil, were obtained by hydrodistillation and analyzed by GC and GC/MS. The major components of these oils were α-pinene (0.7–12.9%), mustakone (7.3–14.5%) and caryophyllene oxide (4.6–28.5%). Maximum yield in essential oil was furnished by the rhizomes hydrodistilled at 5 h.