Composition of the Essential Oils of Two Endemic Helichrysum Species in Turkey
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The aerial parts of Helichrysum noeanum Boiss. and H. chionophilum Boiss. et Balansa were hydrodistilled for 3 h using a Clevenger-type apparatus. The essential oils were analyzed by GC-FID and GC-MS, simultaneously. The main constituents were identified as hexadecanoic acid (25.3%), dodecanoic acid (17.8%), tetradecanoic acid (13.7%), and decanoic acid (4.2%) for H. noeanum. Decanoic acid (18.7%), tetradecanoic acid (16.9%), dodecanoic acid (13.8%), hexadecanoic acid (12.2%) and hexahydrofarnesyl acetone (3.2%) were found to be the major compounds for H chionophilum. Several reports have been encountered in the literature dealing with the oil composition of several Helichrysum species. To the best of our knowledge, the essential oil of H. chionophilum has not previously been investigated.