Comparison of the essential oils of different colored Centaurea tchihatcheffii Fisch. & Mey. flowers [Farkh{dotless} Renkteki Centaurea tchihatcheffii Fisch. & Mey. Çiçek uçucu Yaglarm Karşi{dotless}laştinlmasi{dotless}] (original) (raw)

Comparison of the essential oils of different colored Centaurea tchihatcheffii Fisch. & Mey. flowers

2013

The potential role of flower color in the yield and composition of essential oil was investigated in the endemic Centaurea tchihatcheffii Fisch.&Mey. (Asteraceae). Essential oils obtained by hydrodistillation from different colored flowers of C. tchihatcheffii were separately analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC-MS), simultaneously. The main constituent both oils was found as germacrene D (17.6% and 17.4%). The flower color difference was shown not to play a role in essential oil yield and composition.

Essential oil composition of endemic Centaurea tchihatcheffii Fisch. et Mey. from Turkey

2010

The essential oil obtained by hydrodistillation from endemic Centaurea tchihatcheffii Fisch. & Mey. (Asteraceae) from Turkey was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS), simultaneously. Main constituents of the oil were found as caryophyllene oxide (15.1 %), carvacrol (14.7 %), acetophenone (6.2 %) and spathulenol (5.3 %).

Essential Oil Composition of Centaurea kilaea Boiss. and C. cuneifolia Sm. from Turkey

Essential oil composition of Centaurea kilaea flowers, stems and C. cuneifolia flowers were investigated by GC, GC/MS. Flowers and stems of C. kilaea afforded very low essential oil yield <0.01% (v/w). Nineteen and twenty compounds were identified in the flower and stem oils which represent 59.5% and 77.6% of the C. kilaea oil respectively. The main components of the C. kilaea flower oil were hexadecanoic acid 26.2%, tetradecanoic acid 18.1%, β-Eudesmol 3.3% and decanoic acid 3.1%. The stem oil contains hexadecanoic acid 55.5% and β-Eudesmol 3.2%. Flowers of C. cuneifolia afforded very low essential oil yield <0.01% (v/w). Twenty five compounds were identified in the flower oil of C. cuneifolia which represent 69.92% of the oil. The main components of this oil include hexadecanoic acid 32.9%, tetradecanoic acid 14.4%, heptacosane 6.1% and nonacosane 4.3%. Essential oils obtained from both species have saturated fatty acids and alkanes as the major components, but both oils als...

Composition of the Essential Oils of Centaurea sericea Wagenitz and Centaurea ensiformis P.H. Davis from Turkey

2010

The essential oil obtained by hydrodistillation from two endemic Centaurea L. species (Asteraceae); Centaurea sericeae Wagenitz and Centaurea ensiformis P.H. Davis from Turkey was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS), simultaneously. Caryophyllene oxide (10.6 %), nonacosane (8.6 %) and hexadecanoic acid (7 %) were the main constituents in the oil of C. sericeae and β-eudesmol (29.8 %), hexadecanoic acid (8 %) and caryophyllene oxide (7.6 %) were the main constituents in the oil of C. ensiformis.

Chemical composition of the essential oil of the local endemics Centaurea davidovii and C. parilica (Asteraceae, sect. Lepteranthus) from Bulgaria

Natural product communications, 2014

In the present study the chemical compositions of the essential oils from aerial parts of Centaurea davidovii Urum. and C. parilica Stoj. & Stef., both endemic to Bulgaria, were evaluated by GC and GC-MS. The main components of C. davidovii were β-eudesmol (13.9%), spathulenol (13.3%), caryophyllene oxide (10.1%) and (Z)-phytol (5.4%). The main components of Cparilica were hexadecanoic acid (39.2%), (Z,Z)-9,12-octadecadienoic acid (11.9%), caryophyllene oxide (6.8%) and spathulenol (6.6%). In order to compare the essential oils composition of these taxa and of related species a PCA analysis was carried out.

Essential Oil Composition of Centaurea sempervirens L. (Asteraceae)

International journal of pharmacognosy and phytochemical research, 2017

The essential oil of the aerial parts of Centaurea sempervirens L. (Asteraceae), synonym : Cheirolophus sempervirens (L.) Pomel, was obtained by steam distillation and analyzed by GC-FID and GC-MS. 30 components were identified corresponding to 78.5% of the total oil. Among the identified constituents, oxygenated compounds represented 33.4%, from which 21.2% were hydrocarbons, 10.7% were sesquiterpenes. The non oxygenated compounds were hydrocarbons (9.8%). Phthalates represented 35.3% of the total oil. The major components were 6,10,14-trimethylpentadecan-2-one (12.4%) and epi-torilenol (5.1%). This is the first report on the chemical composition of the essential oil of this species.

Essential oils from the aerial parts of Centaurea cuneifolia Sibth. & Sm. and C. euxina Velen., two species growing wild in Bulgaria

Biochemical Systematics and Ecology, 2009

The volatile constituents of the aerial parts of Centaurea cuneifolia Sibth. & Sm. and Centaurea euxina Velen. from Bulgaria were extracted by hydrodistillation and were analyzed. The main components in C. cuneifolia were b-eudesmol (26.5%) and hexadecanoic acid (17.6%). The main components in C. euxina were hexadecanoic acid (20.3%), spathulenol (10.8%) and caryophyllene oxide (6.2%). The chemotaxonomic significances with respect to other previously studied species of the same sections (Achrolopus and Phalolepis, respectively) are discussed.

Essential oils from flowers ofCentaurea kotschyi var.kotschyi andC. kotschyi var.decumbens from Turkey

Flavour and Fragrance Journal, 2003

The compositions of the essential oils obtained from fresh capitula of Centaurea kotschyi var. kotschyi and Centaurea kotschyi var. decumbens, two endemic plants from Turkey, have been studied. Sesquiterpenes were the main components of both essential oils, with germacrene D (44.2%), β-caryophyllene (12.1%) and bicyclogermacrene (5.5%) in C. kotschyi var. kotschyi and germacrene D (29.4%), β-caryophyllene (11.2%), β-cedrene (7.1%) in C. kotschyi var. decumbens as the principal components. The qualitative and quantitative differences between the two essential oils are in agreement with the morphological observation that led to the differentiation of the two varieties.Copyright © 2003 John Wiley & Sons, Ltd.

Chemical Composition of the Essential Oils of Centaurea formanekii and C. orphanidea ssp. thessala, Growing Wild in Greece

Natural Product Communications, 2012

The volatile constituents of the aerial parts of Centaurea formanekii Halacsy and the aerial parts, capitula and roots of C. orphanidea Heldr. & Sart. ex Boiss. ssp. thessala (Hausskn.) Dostál from Greece were extracted by hydrodistillation and analyzed. The main components in C. formanekii were hexadecanoic acid (13.6%), -elemene (9.1%), and spathulenol (6.9%). The main components in C. orphanidea ssp. thessala were γ-elemene (26.1%) and caryophyllene oxide (13.2%) in the aerial parts, hexadecanoic acid (33.5%) and heptacosane (6.3%) in the capitula, and hexadecanoic acid methyl ester (22.0%) and α-chamigrene (14.0%) in the roots. The chemotaxonomic significance with respect to other previously studied species of the same sections (Phalolepis and Achrolopus, respectively) is discussed.