Studies on the essential oils of the pakistani species of the family umbelliferae part 1 trachyspermum ammi ajowan seed oil
Ashraf, M.; Bhatty, M.K.
Pakistan Journal of Scientific and Industrial Research 18(5): 232-235
ISSN/ISBN: 0030-9885 Accession: 006516357
The essential oils of the fresh large and small seeds of T. ammi (ajowan) grown in Pakistan were characterized and studied for the 1st time. The yield of oils is 3.5 and 5.2%, respectively, and the composition by GLC is .alpha.-pinene (0.33, 0.63%), camphene (0.63, 0.56%), .beta. pinene (1.24, 1.56%), .DELTA.3-carene (0.42, 0.80%), limonene (0.25, 2.25%), .gamma.-terpinene (20.35, 18.70%), p-cymene (23.78, 20.80%) and phenols (53.0, 54.70%). The phenols, as determined by column chromatography, are composed of thymol 45.20 and 48.50% and carvacrol 6.80 and 4.50%, respectively. Both the yield and the composition vary according to the locality of cultivation and the storage time of the seed.