Volatile constituents of the aerial and underground parts of Curcuma aromatica Salisb. from India

The leaves, petioles and rhizomes of Curcuma aromatica Salisb. (Zingiberaceae) from Assam, India, were subjected to steam distillation. The resulting essential oils were analyzed by high-resolution GC and GCIMS. The leaf, petiole and rhizome oils contained more than 51, 50 and 61 components respectively, of which 43, 41 and 53 constituents have been identified, accounting for about 96.8%, 86.3% and 86.3% of the bulk of the respective oils. The major components in the leaf, petiole and rhizome oils were found to be 1,8-cineole (20.0%, 8.8% and 9.3%, respectively), camphor (18.0%, 16.8% and 25.6%), germacrone (11.8%, 0.2% and 10.6%), isoborneol (6.4%, 6.8% and 8.2%) and camphene (9.4%, 1.2% and 7.4%). Additional notable constituents included limonene (8.6%) in the leaf oil, caryophyllene oxide (8.7%), patchouli alcohol (8.4%) and elsholtzia ketone (6.0%) in the petiole oil, and curzerenone (10.9%) in the rhizome oil.