ESSENTIAL OIL COMPOSITION OF BOTHRIOCHLOA ISCHAEMUM L.

The genus of Bothriochloa  is a member of Gramineae , distributed in south of Europe, mediteranean region and south of Asia. In Iran one species is present in northern, northwest and western districts. The aerial parts of Bothriochloa ischaemum  were collected from Karaj in Tehran province at full flowering stage in july 2003. Essential oil isolated by hydrodistillation from the aerial parts of plant , were analysed by a combination of capillary GC and GC/MS. The yeild of essential oil was obtained 0.1% (w/w). Fourteen compounds in the oil have been  identified representing 98% of the oil . The main constituents was  viridiflorol (73%). Other main components were kessane, valencene and a-selinene.