Kurum Yazarı "Özek, Gülmira" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Composition of the essential oil of Chaerophyllum macropodum Boiss. fruits obtained by microdistillation
Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet (Allured Publ Corp, 2006)The microdistilled oil of the fruits of Chaerophyllum, macropodum Boiss. was analyzed by GC and GC/MS. Forty-one constituents were characterized. The main components were found to be p-cymene (39.3%), spathulenol (7.3%), ... -
Composition of the essential oil of Hippomarathrum cristatum (DC.) boiss.
Özek, Gülmira; Özek, Temel; Başer, K. Hüsnü Can; Hamzaoğlu, Ergin; Duran, Ahmet (Allured Publ Corp, 2007)Water distilled essential oil of Hippomarathrum cristatum (DC.) Boiss. (Umbelliferae) fruits used as a condiment in food products traditionally was analyzed by GC and GC/MS methods. Eighty compounds were characterized ... -
Composition of the essential oils of Angelica sylvestris L. var. sylvestris isolated from the fruits by different isolation techniques
Özek, Temel; Özek, Gülmira; Başer, K. Hüsnü Can; Duran, Ahmet; Sağıroğlu, Mehmet (Allured Publ Corp, 2008)The essential oils of the fruits of Angelica sylvestris L.var.sylvestris (Umbelliferae) obtained using hydrodistillation (HD), nucrodistillation (MD) and micro-steam distillation-solid-phase microextraction (MSD-SPME) ... -
Composition of the essential oils of Rhabdosciadium oligocarpum (Post ex Boiss.) Hedge et Lamond and Rhabdosciadium microcalycinum Hand.-Mazz
Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet; Duman, Hayri (John Wiley & Sons LTD, 2006)The volatile constituents of the oils of Rhabdosciadium oligocarpum (Post ex Boiss.) Hedge et Lamond and Rhabdosciadium microcalycinum Hand.-Mazz. (Umbelliferae) were isolated by hydrodistillation and microdistillation ... -
The effect of different nitrogen levels on yield and quality of stevia (Stevia rebaudiana bert.)
Uçar, Esra; Turgut, Kenan; Özyigit, Yaşar; Özek, Temel; Özek, Gülmira (Taylor & Francis Inc, 2018)In the present work, the efficiency of different nitrogen doses (0, 50, 100, 150, and 200kg ha(-1)) on growth, yield, and quality of stevia (Stevia rebaudiana Bert.) was investigated in 2011-2013. The study was conducted ... -
Essential oil composition and leaf trichomes of Pegolettia baccharidifolia and Pegolettia retrofracta (Asteraceae)
Başer, K. Hüsnü Can; Özek, Gülmira; Hulley, I. M.; Özek, Temel; Tilney, P. M.; Van Wyk, B. -E. (Elsevier Science BV, 2017)The essential oils obtained by hydrodistillation from Pegolettia baccharidifolia Less. and P. retrofracta (Thunb.) Kies were studied for the first time, using GC/MS and GC/FID techniques. A total of 178 components were ... -
Essential Oil Composition of Gmelina arborea Roxb., Verbenaceae, From Nigeria
Moronkola, Dorcas O.; Ogunwande, Isiaka A.; Başer, K. Hüsnü Can; Özek, Temel; Özek, Gülmira (Allured Publ Corp, 2009)The chemical composition of the fruit oil of Gmelina arborea Roxb., Verbenaceae, was examined by capillary gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). One hundred components were identified ... -
Essential oil composition of Pentzia incana (Asteraceae), an important natural pasture plant in the Karoo region of South Africa
Hulley, İsabel M.; Sadgrove, Nicholas J.; Tilney, Patricia M.; Özek, Gülmira; Yur, Süleyman; Özek, Temel; van Wyk, Ben-Erik (Natl Inquiry Services Centre Pty LTD, 2018)Pentzia incana is one of the most important of all natural pasture plants in the dry interior (Karoo) region of South Africa. This highly aromatic shrub is thought to be responsible for the distinctive flavour of Karoo ... -
Essential Oils of Echinophora lamondiana (Apiales: Umbelliferae): A Relationship Between Chemical Profile and Biting Deterrence and Larvicidal Activity Against Mosquitoes (Diptera: Culicidae)
Ali, Abbas; Tabanca, Nurhayat; Özek, Gülmira; Özek, Temel; Aytaç, Zeki; Bernier, Ulrich R.; Khan, Ikhlas A. (Oxford University Press Inc, 2015)The essential oils from the flower, leaf, and stem of Echinophora lamondiana B. Yildiz et Z. Bahcecioglu were analyzed by gas chromatography-flame ionization detection and gas chromatography-mass spectrometry. In total, ... -
Essential oils of three species of Heracleum. Anticandidal activity
İşcan, Gökalp; Özek, Temel; Özek, Gülmira; Duran, Ahmet; Başer, K. Hüsnü Can (Springer, 2004)Fruits of Heracleum crenatifolium Boiss., Heracleum sphondylium L subsp. ternatum (Velen.) Brummitt, and Heracleum platytaenium Boiss. (Umbelliferae) were hydrodistilled to obtain essential oils that were then analyzed by ... -
Furanocoumarin Content, Antioxidant Activity, and Inhibitory Potential of Heracleum verticillatum, Heracleum sibiricum, Heracleum angustisectum, and Heracleum ternatum Extracts against Enzymes Involved in Alzheimer's Disease and Type II Diabetes
Özek, Gülmira; Yur, Süleyman; Göğer, Fatih; Özek, Temel; Andjelkovic, Boban; Godjevac, Dejan; Trendafilova, Antoaneta (Wiley-V C H Verlag GMBH, 2019)Hexane extracts of Heracleum verticillatum, H. sibiricum, H. angustisectum, and H. ternatum were studied for their furanocoumarin content antioxidant potential and acetylcholinesterase and -amylase inhibitory activities. ... -
Gas chromatographic-mass spectrometric analysis of volatiles obtained by four different techniques from Salvia rosifolia Sm., and evaluation for biological activity
Özek, Gülmira; Demirci, Fatih; Özek, Temel; Tabanca, Nurhayat; Wedge, David E.; Khan, Shabana I.; Hamzaoğlu, Ergin (Elsevier Science BV, 2010)Four different isolation techniques, conventional hydrodistillation (HD), microwave-assisted hydrodistillation (MWHD), microdistillation (MD) and micro-steam distillation-solid-phase microextraction (MSD-SPME), have been ... -
Glandular trichome structures and chemical composition of the volatiles of five Ribes species from Turkey
Kendir, Gülsen; Köroğlu, Ayşegül; Özek, Gülmira; Özek, Temel; Başer, K. Hüsnü Can (Taylor & Francis Inc, 2019)Currant and gooseberry, the genus Ribes, is represented by eight species in the Flora of Turkey. We examined structures of glandular trichomes and composition of the essential oils from leaves of five Ribes species. The ... -
The Identification of Suberosin from Prangos pabularia Essential Oil and Its Mosquito Activity Against Aedes aegypti
Tabanca, Nurhayat; Tsikolia, Maia; Özek, Gülmira; Özek, Temel; Ali, Abbas; Bernier, Ulrich R.; Khan, Ikhlas A. (Acg Publications, 2016)A detailed analysis of Prangos pabularia Lindl. (Apiaceae) fruit oil was performed by gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS). Bicyclogermacrene (21%), (Z)-beta-ocimene (19%), alpha-humulene ... -
Inhibition of Human Neutrophil Responses by the Essential Oil of Artemisia kotuchovii and Its Constituents
Schepetkin, Igor A.; Kushnarenko, Svetlana V.; Özek, Gülmira; Kirpotina, Liliya N.; Utegenova, gülzhakhan A.; Kotukhov, Yuriy A.; Quinn, Mark T. (American Chemical Society, 2015)Essential oils were obtained by hydrodistillation of the flowers+leaves and stems of Artemisia kotuchovii Kupr. (AKEO(f+l) and AKEO(stm), respectively) and analyzed by gas chromatography (GC) and gas chromatography,mass ... -
Investigation of Galatella villosa and G. tatarica for Antioxidant, alpha-Amylase, Tyrosinase, Lipoxygenase and Xanthine Oxidase Inhibitory Activities
Özek, Gülmira; Ishmuratova, Margarita; Yur, Süleyman; Göğer, Fatih; Haliloğlu, Yeşim; Başer, K. Hüsnü Can; Özek, Temel (Natural Products Inc, 2017)In the present work two Galatella species, Galatella villosa Rchb.f. and Galatella tatarica (Less.) Novopokr collected from Kazakhstan were subjected to hydrodistillation to yield essential oils (EOs), and to maceration ... -
Isolation of eudesmane type sesquiterpene ketone from Prangos heyniae H.Duman & MFWatson essential oil and mosquitocidal activity of the essential oils
Özek, Gülmira; Bedir, Erdal; Tabanca, Nurhayat; Ali, Abbas; Khan, Ikhlas A.; Duran, Ahmet; Özek, Temel (De Gruyter Poland Sp Zoo, 2018)In the present work, an endemic species Prangos heyniae collected in four locations from Turkey was subjected to hydrodistillation in Clevenger type apparatus to obtain the essential oils (E01-4). The gas chromatography/mass ... -
Modulation of Human Neutrophil Responses by the Essential Oils from Ferula akitschkensis and Their Constituents
Schepetkin, Igor A.; Kushnarenko, Svetlana V.; Özek, Gülmira; Kirpotina, Liliya N.; Sinharoy, Pritam; Utegenova, gülzhakhan A.; Quinn, Mark T. (American Chemical Society, 2016)Essential oils were obtained by hydrodistillation of the umbels+seeds and stems of Ferula akitschkensis (FAEO(u/s) and FAEO(stm), respectively) and analyzed by gas chromatography and gas chromatography-mass spectrometry. ... -
The Needle Oil of Pinus caribaea Morelet From Nigeria
Moronkola, Dorcas O.; Ogunwande, Isiaka A.; Oyewole, İsaac O.; Başer, K. Hüsnü Can; Özek, Temel; Özek, Gülmira (Taylor & Francis Inc, 2009)Essential oil composition of fresh needles from Pinus caribaea Morelet (Carribean pine) grown in Nigeria was investigated by a combination of CC and GC/MS. The 44 oil constituents, obtained by hydrodistillation, were largely ...