Yazar "Özek, Gülmira" için listeleme
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Composition and antimicrobial activity of the essential oil of tanacetum cadmeum (Boiss.) heywood subsp. Orientale grierson
Özek, Gülmira; Özek, Temel; İşcan, Gökalp; Başer, K. Hüsnü Can; Hamzaoğlu, Ergin; Duran, Ahmet (2007)Water distilled essential oil of aerial parts of Tanacetum cadmeum (Boiss.) Heywood subsp. orientale Grierson (Asteraceae) was analyzed by GC and GC/MS methods. Ninety three compounds have been characterized representing ... -
Composition and antimicrobial activity of the oils of Ferula szowitsiana DC. from Turkey
Özek, Gülmira; Özek, Temel; İşcan, Gökalp; Başer, K. Hüsnü Can; Duran, Ahmet; Hammoğlu, Ergin (Taylor & Francis Inc, 2008)The essential oils from the leaves and steins of Ferula szowitsiana DC. (Umbelliferae) were separately obtained by hydrodistillation and then analyzed by GC and GC/MS methods. The oil yields were 0.4% and 0.05%, respectively. ... -
Composition and potential of Tanacetum haussknechtii Bornm. Grierson as antioxidant and inhibitor of acetylcholinesterase, tyrosinase, and -amylase enzymes
Yur, Süleyman; Tekin, Mehmet; Göğer, Fatih; Başer, K. Hüsnü Can; Özek, Temel; Özek, Gülmira (Taylor & Francis Inc, 2018)The phytochemical composition of essential oils and extracts of Tanacetum haussknechtii were investigated with GC-FID-MS and LC-MS/MS techniques and evaluated against oxidation, acetylcholinesterase, tyrosinase, and -amylase ... -
Composition of essential oils from Salvia anatolica, a new species endemic from Turkey
Özek, Gülmira; Özek, Temel; Başer, K. Hüsnü Can; Hamzaoğlu, Ergin; Duran, Ahmet (Springer, 2007)The component composition of essential oils produced by steam distillation from flower heads, leaves, and stems of Salvia anatolica (Lamiaceae), a recently described new species endemic from Turkey, was studied by GC/FID ... -
Composition of the essential oil of Centaurea huber-morathii Wagenitz isolated from seeds by microdistillation
Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet (Wiley-Blackwell, 2006)The volatile constituents of the seeds of Centaurea huber-morathii Wagenitz (Asteraceae), obtained by microdistillation, were analysed by GC and GC-MS. Eighty-five constituents were identified in the oil, with octanol ... -
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
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 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 ... -
Fagopyrum esculentum moench'in değişik kısımlarının uçucu bileşikleri, sabit yağ ve biyolojik aktivite açısından değerlendirilmesi
Kara, Bilge (Anadolu Üniversitesi, 2017)Fagopyrum esculentum Moench bitkisinin Eskişehir-Kütahya geçit iklimi koşullarında yetiştirilen Güneş ve Sumçanka çeşitlerinin yaprak, çiçek, sap, tohum ve kavuz kısımlarının uçucu bileşenleri ve sabit yağ üzerinde kimyasal ... -
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 ...