Hayri Duman

Essential Oil Composition of the Fruits of Seseli resinosum Freyn et Sint. and Seseli tortuosum L. Growing in Turkey

Abstract Essential oils obtained by hydrodistillation from fruits of Seseli resinosum Freyn et Sint. and Seseli tortuosum L. were analyzed by GC and GC/MS. Twenty-two compounds were characterized, representing 100.0% of the oil of S. resinosum, while 27 compounds were found, representing 98.3% of the oil of S. tortuosum. The main constituents were found to be β-pinene (37.5%), 4α-hydroxygermacra-1(10)-5-diene (21.7%), α-pinene (13.7%) for S. resinosum and (E)-sesquilavandulol (37.0%), sabinene (19.7%), α-pinene (13.5%), β-phellandrene (7.8%) for S. tortuosum.

Essential oils of Sideritis species of Turkey belonging to the section Empedoclia

The paper summarizes the work done on the essential oil content and composition of fifty Sideritis species of Turkey belonging to the section Empedoclia. The water-distilled oils were analyzed by GC/MS. The oils were characterized as having mono- and sesquiterpenoids.

Antioxidant Properties and Phenolic Composition of Sideritis Species

The antioxidant properties and phenolic composition of 27 Sideritis species were studied. Plant samples were extracted with petroleum ether using a Soxhlet apparatus. The defatted plant materials were extracted with 70% methanol. Antioxidant activities of the extracts were measured using Fe+2 induced linoleic acid peroxidation, as indicated by thiobarbituric acid reactive substance (TBARS) production. Free radical scavenging activities were determined based on 1,1-diphenyl-2-picrylhydrazyl radical (DPPH). Results were compared with standard BHT. Total phenol concentration of the extracts was estimated with Folin-Ciocalteu reagent using gallic acid as standard, and phenolic components were quantified by HPLC-DAD.

Composition of the essential oils of Zosima absinthifolia (Vent.) Link and Ferula elaeochytris Korovin from Turkey

The hydrodistilled essential oils from dried fruits of Zosima absinthifolia and Ferula elaeochytris were analysed by GC – MS. Sixteen components, representing 95.8% of the oil in Zosima absinthifolia, and 43 components, making up 76.7% of the oil of Ferula elaeochytris, were characterized. The major components were octyl acetate (38.4%) and octyl hexanoate (31.9%) in the former oil; and nonane (27.1%), α-pinene (12.7%) and germacrene B (10.3%) in the latter. Copyright

Composition of the Essential Oils of Three Teucrium Species from Turkey

Abstract Water-distilled essential oils from the aerial parts of Teucrium pestalozzae, T. sandrasicum and T. montanum were analyzed by GC/MS. The major constituents characterized in the oils were as follows: T. pestalozzae (endemic in Turkey) contained β-caryophyllene (27.6%) and germacrene D (13.8%); T. sandrasicum (endemic in Turkey) contained germacrene D (27.9%), β-caryophyllene (9.1%) and sabinene (8.9%) and T. montanum contained sabinene (11.3%), δ-cadinene (6.3%), germacrene D (5.8%), α-copaene (5.7%), (E)-β-farnesene (5.5%) and α-pinene (5.2%).

Composition of the Essential Oil of Ferulago asparagifolia Boiss. from Turkey

Abstract Water-distilled essential oil of the crashed fruits of Ferulago asparagifolia was analyzed by GC/MS. 2,3,6-trimethyl benzaldehyde (38.9%) and myrcene (18.2%) were identified as major constituents.

Composition of the essential oil of Prangos heyniae H. Duman et M. F. Watson, a new endemic from Turkey.

The water-distilled essential oils from crushed dry fruits of Prangos heyniae, a recently described endemic in Turkey, collected from two localities, were analysed by GC–MS. Sixty-one and 79 components representing 92.2% and 89.8% of the oils were characterized with β-bisabolenal (53.3% and 18.0%), β-bisabolenol (14.6% and 2.3%) and β-bisabolene (12.1% and 10.1%) as main constituents. Germacrene D (13.5%) and germacrene B (9.4%) were also main components in one of the samples. Copyright

ESSENTIAL OIL OF SALVIA AYTACHII M. VURAL ET N. ADIGUZEL

Abstract Water-distilled essential oil of Salvia aytachii, a recently described Turkish endemic, was analyzed by GC/MS. Fifty-eight compounds were characterized representing 98.41% of the oil, with camphor (30.78%) and 1,8-cineole (27.28%) as major constitutents.

Essential Oil of Pimpinella aromatica Bieb. from Turkey

ABSTRACT Water distilled essential oil of Pimpinella aromatica growing in Turkey was analyzed by GC and GC/MS. Methyl chavicol (91.96%), (E)-anethol (7.22%) and α-pinene (0.12%) were characterized representing 99.30% of the oil.

Essential Oil of Nepeta flavida Hub.-Mor.

Abstract Water-distilled essential oil from the herbal parts of Nepeta flavida was analyzed by GC/MS. Eighty three components were characterized representing 92.8% of the total components detected in the oil with linalool (37.65%) and 1,8-cineole (22.67%) as major constituents.