Chrysopogon zizanioides oil (CZO) is obtained from the roots of the C. zizanioides plant and it is frequently employed as a major odour contributor in the fragrance and aromatherapy industries. The hydrodistilled CZO was analyzed by GC/MS and compared to fresh sample aroma which was analyzed by headspace GC/MS method. The main constituents of the hydrodistilled oil were Khusimol (16.48%), aristol-...