Chemical investigation of the leaf and rhizome essential oils of Zingiber zerumbet (L.) Smith from Bangladesh

Zingiber zerumbet (L.) Smith leaf and rhizome oils, obtained by hydrodistillation, were analyzed by gas chromatography mass spectroscopy (GC-MS). Twenty-nine components were identified in the leaf oil. The major components were zerumbone (36.98%); a-caryophyllene (16.35%) and camphene (9.24%). Thirty components were identified in rhizome oil with the main components being in zerumbone (46.83%); a-caryophyllene (19.00%) and 1,5,5,8-tetramethyl-12-oxabicyclo[9.1.0]dodeca-3,7-diene (4.28%). The compositions of both oils varied qualitatively and quantitatively.