Composition of the essential oil of Erechtites hieracifolia from Bolivia

Analysis by GC and GC-MS of the essential oil obtained from aerial parts of Erechtites hieracifolia revealed 22 components (93% of the total compositi on). The major constituents were found to be alpha -pinene, myrcene, (E)-be ta -ocimene, (E)-caryophyllene and germacrene D; the enantiomeric distribut ion of alpha -pinene, sabinene, beta -pinene, limonene and linalool was stu died by multidimensional HRGC-HRGC. The major component was alpha -pinene ( 48%) with an enantiomeric purity of 100% for (IR)-(+)-alpha -pinene. Copyri ght (C) 2001 John Wiley & Sons, Ltd.