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    Comparison of Essential Oil of Xanthogalum Purpurascens Lallem. Obtained via Different Isolation Techniques
    (Allured Publ Corp, 2006) Özek, Gülmira; Özek, Temel; Baser, K. H. C.; Duran, Ahmet; Sağıroğlu, Mehmet
    The essential oil of Xanthogalum purpurascens Lallem. was obtained by hydrodistillation (HD), microdistillation (MD) and micro-steam distilled solid-phase micro extraction (MSD-SPME) techniques. The oils were then analyzed by GC and GUMS. The composition of oils depended on the extraction method employed. The main components of the hydrodistilled oil were found to be alpha-phellandrene (32%), beta-phellandrene (23%), isopropyl hexanoate (6%), limonene (5.3%), p-cymene (3.7%), alpha-pinene (3.2%) and bicyclogermacrene (3%).
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    Comparison of the Essential Oils of Prangos Turcica a. Duran, M. Sagiroglu Et H. Duman Fruits Obtained by Different Isolation Techniques
    (Allured Publ Corp, 2006) Özek, Gülmira; Özek, Temel; Başer, K. H. C.; Duran, Ahmet; Sağıroğlu, Mehmet; Duman, H.
    The essential oils from fruits of Prangos turcica A. Duran, M. Sagiroglu et H. Duman were obtained by hydrodistillation (HD), microdistillation (MD), micro-steam distilled solid-phase microextraction (MSD-SPME) techniques and then analyzed by GC and GC/MS methods. The oils showed similar composition with some quantitative differences. The main components of the oils were found to be alpha-humulene, germacrene D, naphthalene, terpinolene, p-cymene, gamma-elemene and bornyl acetate.
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    Composition of the Essential Oil of Centaurea Huber-Morathii Wagenitz Isolated From Seeds by Microdistillation
    (Wıley-Blackwell, 2006) Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet
    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 (17.8%), hexadecanoic acid (8.0%), p-cymene (4.9%) and caryophyllene oxide (3.3%) as the major components.
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    Composition of the Essential Oil of Chaerophyllum Macropodum Boiss. Fruits Obtained by Microdistillation
    (Allured Publ Corp, 2006) Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet
    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%), p-cymen-8-ol (5.9%), octanal (5.2%), (E)-beta-ocimene (4.5%), (E)-2-decenal (3.2%) and (Z)-beta-famesene (3.1%).
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    Composition of the Essential Oils of Rhabdosciadium Oligocarpum (Post Ex Boiss.) Hedge Et Lamond and Rhabdosciadium Microcalycinum Hand.-Mazz.
    (John Wiley & Sons Ltd, 2006) Başer, K. Hüsnü Can; Özek, Gülmira; Özek, Temel; Duran, Ahmet; Duman, Hayri
    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 techniques and then analysed by GC and GC-MS. Germacrene D was found to be the main constituent in all the oils obtained.
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    Gas Chromatographic-mass Spectrometric Analysis of Volatiles Obtained by Four Different Techniques From Salvia Rosifolia Sm., and Evaluation for Biological Activity
    (Elsevier, 2010) Özek, Gülmira; Demirci, Fatih; Özek, Temel; Tabanca, Nurhayat; Wedge, David E.; Khan, Shabana I.; Başer, Kemal Hüsnü Can; Duran, Ahmet; Hamzaoğlu, Ergin
    Four different isolation techniques, conventional hydrodistillation (HD), microwave-assisted hydrodistillation (MWHD), microdistillation (MD) and micro-steam distillation-solid-phase microextraction (MSD-SPME), have been used to analyze the volatile constituents from the aerial parts of Salvia rosifolia Sm. by gas chromatography and gas chromatography coupled to mass spectrometry. HD and MWHD techniques produced quantitatively (yield, 0.39% and 0.40%) and qualitatively (aromatic profile) similar essential oils. alpha-Pinene (15.7-34.8%), 1,8-cineole (16.6-25.1%), beta-pinene (6.7-13.5%), beta-caryophyllene (1.4-5.0%) and caryophyllene oxide (1.4-4.4%) were identified as major constituents of this Turkish endemic species. Besides, the hydrodistilled oil of S. rosifolia was evaluated for antibacterial, antifungal, anticancer, antioxidant and cytotoxic activities. The hydrodistilled oil of S. rosifolia showed antibacterial activity against Methicillin-resistant Staphylococcus aureus (MRSA) with a MIC value of 125 mu g/mL Other human pathogenic microorganisms (Escherichia coli, Pseudomonas aeruginosa, Enterobacter aerogenes, Salmonella typhimurium, Staphylococcus epidermidis, Candida albicans) were also inhibited within a moderate range (MIC = 125-1000 mu g/mL). Antifungal activity of the oil was also observed against the strawberry anthracnose-causing fungal plant pathogens Colletotrichum acutatum, C. fragariae and C. gloeosporioides. No cytotoxicity was observed for S. rosifolia oil up to 25 mg/mL against malignant melanoma, epidermal, ductal and ovary carcinoma.