Kurum Yazarı "İşcan, Gökalp" Scopus İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Antibacterial and Anticandidal Activities of Common Essential Oil Constituents
İşcan, Gökalp (Acg Publications, 2017)Essential oils and some of their oxygenated constituents are known to possess antimicrobial activity. In the last 30 years, there is a dramatic increase in the number of resistant microorganisms against available antimicrobials ... -
Antibacterial and antifungal activities of some trimethoprim salts
Tunalı, Yağmur; Karaca, Hülya; İşcan, Gökalp; Demirci, Fatih; Benkli, Kadriye (Birkhauser Boston Inc, 2012)In this study, the antimicrobial activities of Trimethoprim (1), Trimethoprim + Maleic acid (2), Trimethoprim + Oxalic acid dihydrate (3), and Trimethoprim + trans-1,2-Cyclohexanedicarboxylic acid (4) were investigated for ... -
Antibacterial profiling of abietane-type diterpenoids
Helfenstein, Andreas; Vahermo, Mikko; Nawrot, Dorota A.; Demirci, Fatih; İşcan, Gökalp; Krogerus, Sara; Tammela, Paivi (Pergamon-Elsevier Science LTD, 2017)Abietic and dehydroabietic acid are interesting diterpenes with a highly diverse repertoire of associated bioactivities. They have, among others, shown antibacterial and antifungal activity, potentially valuable in the ... -
Antibacterial, anticandidal and antioxidant properties of Tanacetum argenteum (Lam.) willd. subsp. flabellifolium (Boiss. & Heldr.) grierson
Köse, Yavuz Bülent; İşcan, Gökalp; Göğer, Fatih; Demirci, Betül; Elmaci, C. (Pakistan Journal of Pharmaceutical Sciences, 2017)In the present study hydrodistilled essential oil and total methanol extracts of Tanacetum argenteum subsp. flabellifolium have been evaluated for their antimicrobial and antioxidant effects. The chemical composition of ... -
Antibacterial, antifungal, and antimycobacterial activity of Ilex aquifolium leaves
Erdemoğlu, Nurgün; İşcan, Gökalp; Şener, Bilge; Palittapongarnpim, Prasit (Informa Healthcare, 2009)The objective of this study was to examine antibacterial, antifungal, and antimycobacterial properties of flex aquifolium L. (Aquifoliaceae) growing in Turkey. The ethanol, ethyl acetate, chloroform, and n-hexane extracts ... -
Anticandidal Activity of the Essential Oil of Nepeta transcaucasica Grossh.
İşcan, Gökalp; Köse, Yavuz Bülent; Demirci, Betül; Başer, K. Hüsnü Can (Wiley-Blackwell, 2011)Hydrodistallation of the aerial parts of Nepeta transcaucasica Grossh. (Lamiaceae), collected in Agri, Dogubayazit Province, afforded an essential oil that was characterized by GC and GC/MS analyses. Twenty-seven compounds, ... -
Anticandidal Effects of Thymoquinone: Mode of Action Determined by Transmission Electron Microscopy (TEM)
İşcan, Gökalp; İşcan, Arzu; Demirci, Fatih (Natural Products Inc, 2016)Thymoquinone (TQ) is one of the bioactive constituents of black cumin seed (Nigella sativa L.) oil. It is well known that this natural volatile quinone has remarkable antimicrobial effects, especially against Candida ... -
Antimicrobial activities of Ferulago essential oils
Demirci, Fatih; İşcan, Gökalp; Güven, Kıymet; Kırımer, Neşe; Demirci, Betül; Başer, K. Hüsnü Can (Verlag Z Naturforsch, 2000)Essential oils from Ferulago asparagifolia Boiss., F. galbanifera (Miller) W. Koch, F. humilis Boiss. (Endemic), F. trachycarpa Boiss. growing in Turkey were evaluated against 15 microorganisms for their antifungal and ... -
Antimicrobial activity of the essential oil of Centaurea aladagensis
Köse, Yavuz Bülent; İşcan, Gökalp; Demirci, Betül; Başer, K. Hüsnü Can; Çelik, S. (Elsevier Science BV, 2007)Composition of the water-distilled oil of the aerial parts of Centaurea aladagensis, endemic in Turkey, was analysed by GC-MS. Hexadecanoic acid (39.3%), caryophyllene oxide (6.6%) and hexahydrofamesyl acetone (4.3%) were ... -
Antimicrobial Activity of the Essential Oils Obtained from Flowering Aerial Parts of Centaurea lycopifolia Boiss. et Kotschy and Centaurea cheirolopha (Fenzl) Wagenitz from Turkey
Köse, Yavuz Bülent; İşcan, Gökalp; Demirci, Betül (Taylor & Francis LTD, 2016)The genus Centaurea L. (Asteraceae) is widely distributed in Turkey and used as folk remedies for their several biological effects. In the present study hydrodistilled essential oils of Centaurea lycopifolia and Centaurea ... -
Antimicrobial and antioxidant activities of Stachys lavandulifolia subsp. lavandulifolia essential oil and its infusion
İşcan, Gökalp; Demirci, Betül; Demirci, Fatih; Göğer, Fatih; Kırımer, Neşe; Köse, Yavuz Bülent; Başer, K. Hüsnü Can (2012)Stachys lavandulifolia Vahl. subsp. lavandulifolia (Lamiaceae) is widely used in south Anatolia as a herbal tea. It is used for the treatment of gastrointestinal and respiratory disorders. Constituents of the essential oil ... -
Antimicrobial screening of Mentha piperita essential oils
İşcan, Gökalp; Kırımer, Neşe; Kürkçüoğlu, Mine; Başer, K. Hüsnü Can; Demirci, Fatih (American Chemical Society, 2002)Essential oils of peppermint Mentha piperita L. (Lamiaceae), which are used in flavors, fragrances, and pharmaceuticals, were investigated for their antimicrobial properties against 21 human and plant pathogenic microorganisms. ... -
The bioactive essential oil of Heracleum sphondylium L. subsp. ternatum (Velen.) Brummitt
İşcan, Gökalp; Demirci, Fatih; Kürkçüoğlu, Mine; Kıvanç, Merih; Başer, K. Hüsnü Can (Verlag der Zeitschrift fur Naturforschung, 2003)The essential oil of Heracleum sphondylium L. subsp. ternatum (Velen.) Brummit (Umbelliferae) was isolated from crushed seeds by means of hydrodistillation and analyzed by GC and GC/MS. Major components were identified as ... -
Biological activity and composition of the essential oils of Achillea schischkinii Sosn. and Achillea aleppica DC. subsp aleppica
İşcan, Gökalp; Kırımer, Neşe; Kürkçüoğlu, Mine; Arabaci, T; Küpeli, E; Başer, K. Hüsnü Can (American Chemical Society, 2006)The essential Oils obtained by water distillation from aerial parts of Achillea schischkinii Sosn. and Achillea aleppica DC. subsp. aleppica were analyzed by gas chromatography and gas chromatography/mass spectrometry. ... -
Biotransformation of (-)-(R)-a-Phellandrene: Antimicrobial Activity of Its Major Metabolite
İşcan, Gökalp; Kırımer, Neşe; Demirci, Fatih; Demirci, Betül; Noma, Yoshiaki; Başer, K. Hüsnü Can (Wiley-V C H Verlag GMBH, 2012)Terpene derivatives converted by microbial biotransformation constitute an important resource for natural pharmaceutical, fragrance, and aroma substances. In the present study, the monoterpene a-phellandrene was biotransformed ... -
Chemical characterization and antimicrobial evaluation of Stachys citrina subsp. Citrina essential oil [Stachys Citrina subsp. Citrina uçucu yagi{dotless}ni{dotless}n kimyasal karakterizasyonu ve antimikrobiyal degerlendirilmesi]
Flowering aerial parts of Stachys citrina Boiss. et Heldr. subsp. citrina (Lamiaceae) being endemic for Turkey were subjected to hydrodistillation to obtain the essential oil which was further analysed by GC-FID and GC-MS, ... -
Chemical Composition and Biological Activity of Centaurea baseri: New Species from Turkey
Köse, Yavuz Bülent; İşcan, Gökalp; Göğer, Fatih; Akalın Çiftçi, Gülsen; Demirci, Betül; Başer, K. Hüsnü Can (Wiley-V C H Verlag GMBH, 2016)The genus Centaurea L. is one of the largest and important genera of Asteraceae family. Centaurea species have been widely used as herbal remedies in folk medicine for their antidandruff, antidiarrheic, antirheumatic, ... -
Chemical composition and biological activity of Nepeta Cilicica
İşcan, Gökalp; Göğer, Fatih; Demirci, Betül; Köse, Yavuz Bülent (Bangladesh Pharmacological Soc, 2017)In the present study, aerial parts of Nepeta cilicica were hydro-distilled for the essential oil. Furthermore, air-dried plant materials were extracted with methanol. According to GC-MS results, 35 compounds were characterized ... -
Comparison of hydrodistillation and microdistillation methods for the analysis of fruit volatiles of Prangos pabularia Lindl., and evaluation of its antimicrobial activity
Özek, Gülmira; Özek, Temel; İşcan, Gökalp; Başer, K. Hüsnü Can; Hamzaoğlu, Ergin; Duran, Ahmet (Elsevier Science BV, 2007)The volatile constituents of Prangos pabularia Lindl. fruits (Umbelliferae) were obtained by hydrodistillation (HD) and microdistillation (MD) techniques, and then analyzed by gas chromatography (GC) and gas chromatography-mass ...