Jasim Uddin Chowdhury

Studies in the Essential Oil Bearing Plants of Bangladesh. Part V. Composition of the Leaf Oils of Eucalyptus citriodora Hook and E. alba Reinw. ex Blume.

Abstract Eucalyptus citriodora and E. alba leaf oils, obtained by hydrodistillation, were analyzed by GC and GC/MS. Thirty-five components were identified in the E. citriodora oil. The main components were citronellal (77.0%), neoisopulegol (7.3%), citronellol (5.9%) and iso(iso)pulegol (4.1%). Fifty-nine components were identified in E. alba oil with the main components being β-pinene (24.0%) and α-pinene (12.9%).

Studies on the Essential Oil Bearing Plants of Bangladesh. Part IV. Composition of the Leaf Oil of Three Cymbopogon species: C. flexuosus (Nees ex Steud.) Wats., C. nardus (L.) Rendle var. confertiflorus (Steud.) N. L. Bor and C. martinii (Roxb.) Wats. var. martinii

Abstract The oils of Cymbopogon martinii(Roxb.) Wats. var. martinii (palmarosa), C. nardus (L.) Rendle var. confertiflorus (Steud.) N. L. Bor and C. flexuosus (Nees ex Steud.) Wats, produced in Bangladesh were subjected to analysis by GC and GC/MS. The oil of C. martinii var. martinii was found to contain geraniol (82.2%) and geranyl acetate (10.1%), while the oil of C. nardus var. confertiflorus also contained geraniol (75.1%) and geranyl acetate (7.6%) as major components. The oil of C. flexuosus contained the expected neral (36.4%) and geranial (50.2%) as major components, while a mutant strain of the same species was found rich in geraniol (38.6%), geranial (8.1%) and methyl eugenol (9.7%).