Kurum Yazarı "İşcan, Gökalp" Makale 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 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, 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 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 (Natural Products Inc, 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 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 ... -
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 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 ... -
Composition and antibacterial activity of the essential oil of ferulago confusa velen
Kürkçüoğlu, Mine; İşcan, Gökalp; Demirci, Fatih; Başer, K. Hüsnü Can; Malyer, Hulusi; Erdoğan, E. (2010)Water-distilled essential oil from the crushed fruits of Ferulago confusa Velen, collected from Bursa: Keles-Orhaneli in Turkey, was analyzed by GC and GC/MS. Ninety-one components were identified representing 99.5% of the ... -
Composition and Antibacterial Activity of the Essential Oil of Ferulago confusa Velen.
Kürkçüoğlu, Mine; İşcan, Gökalp; Demirci, Fatih; Başer, K. Hüsnü Can; Malyer, Hulusi; Erdoğan, E. (Allured Publ Corp, 2010)Water-distilled essential oil from the crushed fruits of Ferulago confusa Velen, collected from Bursa: Keles-Orhaneli in Turkey, was analyzed by GC and CC/MS. Ninety-one components were identified representing 99.5% of the ... -
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 essential oils of calamintha betulifolia boiss. et bal
The water distilled essentials oil from the aerial parts of Calamintha betulifolia Boiss. et Bal. collected from three different localities in Turkey were analyzed by GC and GC/MS. Fifty six to seventy nine components ... -
Composition and antimicrobial activity of the essential oils of two endemic species from Turkey: Sideritis cilicica and Sideritis bilgerana
İşcan, Gökalp; Kırımer, Neşe; Kürkçüoğlu, Mine; Başer, K. Hüsnü Can (Springer, 2005)Aerial parts of Sideritis cilicica Boiss. ct, Bal. and Sideritis bilgerana P.H. Davis (Lamiaceae) were h y vdrodistilled to obtain essential oils that were then analyzed by GC and GC/MS. beta-Pinene (39%), alpha-pinene ... -
Composition and biological activities of Salvia veneris Hedge growing in Cyprus
Toplan, Gizem Gülsoy; Kürkçüoğlu, Mine; Göğer, Fatih; İşcan, Gökalp; Ağalar, Hale Gamze; Mat, Afife; Sarıyar, Günay (Elsevier Science BV, 2017)Salvia is a valuable genus whose species are rich in essential oils and phenolic compounds. Salvia species are used in perfumery and cosmetics industry and also in food industry as a source of essential oil and flavoring ...