| essential oil composition of five collections of achillea biebersteinii from central turkey and their antifungal and insecticidal activity. | the composition of the essential oils hydrodistilled from the aerial parts of five achillea biebersteinii afan samples, collected in central turkey from konya, isparta and ankara, were analyzed both by gas chromatography (gc-fid) and gas chromatography-mass spectrometry (gc-ms). eighty-four components were identified, representing 87 to 99% of the total oil composition. the identified major components were 1,8-cineole (9-37%), camphor (16-30%) and p-cymene (1-27%). two samples differed in piperi ... | 2011 | 21615036 |