Volatile terpenoid compositions of leaf and rhizome of Curcuma amada Roxb. from Northern India.
Padalia R. C., Verma R. S., Velusamy Sundaresan, Amit Chauhan, Chanotiya C. S., Anju Yadav
Author Affiliation: CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Research Center, Pantnagar, Uttarakhand, India.
Journal of Essential Oil Research 25 : 17-22
Abstract : The volatile constituents of leaves and rhizomes of Curcuma amada grown in the foothills of Uttarakhand, India, were studied by using capillary gas chromatography-flame ionization detector (GC-FID) and GC-mass spectrometry (GC-MS). The analysis revealed fifty-seven constituents comprising 92.69% and 98.56% of the leaf and rhizome oil compositions. The leaf essential oil of C. amada was mainly composed of furanosesquiterpenoids, namely epi-curzerenone (10.76%), curzerenone (9.53%), curzerene (3.95%) and furanogermenone (1.77%). Camphor (17.90%), isoborneol (7.30%), camphene (3.57%), borneol (1.87%) and camphene hydrate (1.25%) were the major constituents of 36.79% of the monoterpenoids fraction of leaf essential oil composition. Conversely, the rhizome essential oil of C. amada was mainly dominated by monoterpenoids (97.72%), with myrcene (88.84%) a single major constituent along with ?-pinene (3.74%), (E)-?-ocimene (2.61%) and other minor constituents. Comparison of the volatile constituents of leaves and rhizome essential oil of C. amada revealed sharp qualitative and quantitative variations. Furanosesquiterpenoids, isoborneol and borneol were the exclusive constituents of leaf essential oil, and were not noticed in rhizome oil of C. amada. Myrcene, the single major constituent of rhizome oil, along with ?-pinene and (E)-?-ocimene, seem to be responsible for the characteristic mango aroma of C. amada.