Search

The leaves of Indian yew Taxus wallichiana, growing in Gulmarg, Jammu and Kashmir, on hydrodistillation, gave 0.025% oil on a fresh weight basis. GC and GC-MS analysis of the oil resulted in the identification of 62 constituents, representing 93.3% of the oil. The main constituents identified in the leaf oil were ( E)-2-octen-1-ol (14.5%), n-pentacosane (8.1%), caryophyllene oxide (7.1%), 1-octanol (6.5%), hexanoic acid (5.5%) and ( Z)-3-hexenol (4.1%). Copyright © 2006 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The rhizome essential oils of Curcuma angustifolia from Central and Southern India were subjected to GC/MS analysis, which resulted in the identification of 81 and 78 constituents, accounting for more than 95 and 99% of the oil contents, respectively. The major constituents in the rhizome oil from Central India were xanthorrhizol isomer (12.7%), methyl eugenol (10.5%), palmitic acid (5.2%) and camphor (4.2%), while the rhizomes oil from Travancore (Southern India) had germacrone (12.8%), camphor (12.3%), isoborneol (8.7%), curdione (8.4%) and 1,8-cineole (4.8%) as major constituents. Copyright © 2006 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The essential oil composition of four accessions, C-62, P-17, C-45 and C-59, with control LK of Mentha × piperita, cultivated at the CIMAP Research Farm, Lucknow, were analysed by GC and GC-MS, which resulted in the identification of 61, 74, 67, 68 and 55 constituents, representing 99.7%, 99.6%, 99.7%, 92.3% and 91.6% of the oils, respectively. The performance of accessions C-62, P-17, C-45 and C-59 against the control LK was also evaluated. The yield of fresh material, 17.2, 18.2, 17.5, 16.4 and 18.0 tons/ha, and the production of essential oils, 72.6, 145.5, 80.1, 74.6 and 75.8 kg/ha, was satisfactory. Accessions C-62, C45 and P-17 were found suitable for cultivation of peppermint, with acceptable amounts of menthol, menthone and menthyl acetate. It is interesting to observe that menthofuran was also absent in all the four accessions except the control. The essential oil of accession P-17 was superior over the other accessions, with an almost twice higher oil yield and an oil profile composition comparable to those of other accessions. Copyright © 2004 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The essential oils of Palmarosa ( Cymbopogon martinii (Roxb.) Wats. var. motia Burk) flowering herbs from three different geographical locations in India, viz. Hyderabad,Lucknow and Amarawati were analysed by high-resolution GC and GC -MS. In all three samples, geraniol (67.6 -83.6%) was the major constituent and, although the composition of the three oils was similar, quantitative differences in the concentration of some constituents were observed. The GC and GC -MS analysis of the Hyderabad, Lucknow and Amarawati oils resulted in the identification of 40, 38 and 33 constituents, representing 98.5%, 99.7% and 99.8% of the oils,respectively. Among the three oils analysed, Amarawati oil was of the highest quality due to higher geraniol (83.6%) and lower geranyl acetate (2.3%) and geranial (1.0%) content. Copyright © 2003 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The essential oil composition of Murraya exotica leaves and flowers from CIMAP Research Farm, Lucknow, were analysed by GC and GC-MS, which resulted in the identification of 56 and 72 constituents, representing 99.8% and 99.2% of the oils, respectively. The leaf oil showed ( E)-nerolidol (27.8%), α-zingiberene (10.0%), β-caryophyllene (9.7%), ( E, E) farnesol (8.9%) and δ-elemene (5.1%) as the major constituents, while the flower oil showed ( E, E, E)- α-springene (23.8%), ( E)-nerolidol (18.7%), ( E, E) α-farnesene (13.2%), methyl palmitate (6.8%) and germacrene B (5.9%) as the major constituents. Copyright © 2005 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The essential oils of Syzygium aromaticum were isolated from its buds and leaves by hydrodistillation. The oils were analyzed by high resolution GC and GC-MS. Twenty-eight and 35 constituents representing 99.9% each were identified from the bud oils of Indian and Madagascan origins, respectively. On the other hand leaf oil from Madagascar resulted in the identification of 22 constituents representing 99.9% of the oil. The major constituents in bud and leaf oils were eugenol and β-caryophyllene. Copyright © 2004 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The volatile leaf oil of Juniperus chinensis L., gown as ornamental tree in the plains of northern India, was examined by GC and GC-MS. Thirty-three components representing 94.8% of the oil were characterized with sabinene (19.8%), elemol (18.6%), bornyl acetate (17.5%) and limonene (14.2%) as major constituents. The oil was found to be polymorphic neither for cedrene/thujopsene/cedrol (typical juniper wood oil components) nor for phenolics such as methyl chavicol, safrole, methyl eugenol and elemicin, derived from phenyl propanoid pathway. Copyright © 2004 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The chemical composition of the essential oil obtained by hydrodistillation of staminate inflorescences of kewda ( Pandanus odoratissimus L.) has been compared with the kewda oil from the local market. Both the oils were subjected to high-resolution GC and GC-MS, which resulted in the identification and quantification of 85 and 59 components, amounting to 98.7% and 98.6% of the total oils, respectively. The major components of the hydrodistilled kewda oil were 2-phenyl ethyl methyl ether (37.7%), terpinen-4-ol (18.6%), α-terpineol (8.3%) and 2-phenyl ethyl alcohol (7.5%), whereas the major constituents of kewda oil from the local market were 2-phenyl ethyl alcohol (33.2%), 2-phenyl ethyl methyl ether (16.1%), benzyl benzoate (11.0%), viridine (8.8%) and germacrene B (8.3%). Copyright © 2004 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]