Browsing by Author "Karaoğlu, Şengül Alpay"
Now showing items 1-20 of 30
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Antibacterial activity of bryophyte species against Paenibacillus larvae isolates
Sevim, Elif; Baş, Yıldız; Çelik, Gonca; Pınarbaş, Müberra; Bozdeveci, Arif; Özdemir, Turan; Karaoğlu, Şengül Alpay; Akpınar, Rahşan (2017)This study was performed to determine the antibacterial activity of methanol extracts of 23 bryophyte species against Paenibacillus larvae isolates that cause American foulbrood diseases in honeybee larvae. The honey and ... -
Antimicrobial activity and analyses of six Geranium L. species with headspace SPME and hydrodistillation
Renda, Gülin; Çelik, Gonca; Korkmaz, Büşra; Karaoğlu, Şengül Alpay; Yaylı, Nurettin (Taylor & Francis Ltd, 2016)A solid phase microextraction (SPME) method with gas chromatography-mass spectrometry (GC-MS) was used for analyses of the volatile compounds of six Geranium species; G. asphodeloides, G. psilostemon, G. purpureum, G. ... -
Antimicrobial Activity and Composition of Rindera lanata (LAM.) Bunge var. canescens (A.D.C.) Kosn. Essential oil Obtained by Hydrodistillation and Microwave Assisted Distillation
The composition of essential oils of Rindera lanata (LAM). Bunge var. canescens (A.D.C) Kosn. obtained by hydro-distillation (HD) and microwave assisted distillation (MW) by GC, GC/MS. Thirty three and thirty nine compounds ... -
Biological activity, and volatile and phenolic compounds from five Lamiaceae species
Çelik, Gonca; Kılıç, Gözde; Kanbolat, Şeyda; Şener, Sıla Özlem; Karaköse, Mustafa; Yaylı, Nurettin; Karaoğlu, Şengül Alpay (Wiley, 2021)Lamiaceae, a family of flowering plants, have been historically used as culinary herbs, shrubs and medicinal plants. With this study, the volatile organic compounds (VOCs) of the five species of the Lamiaceae family (Thymus ... -
Characterization of Local Trichoderma spp. as Potential Bio-Control Agents, Screening of in vitro Antagonistic Activities and Fungicide Tolerance
Enlightening effects of biocontrol agents as Trichoderma spp. to provide disease control by combating pathogens is an important alternative in agricultural crop production. To that end, 9 species of Hypocrea/ Trichoderma ... -
Chemical composition and antimicrobial activity of essential oils from tortella inclinata var. Densa, T. Tortusa and pleurochaete squarrosa
Tosun, Gonca; Yaylı, Büşra; Özdemir, Turan; Batan, Nevzat; Yaylı, Nurettin; Karaoğlu, Şengül Alpay (Chemical Publishing Co., 2014)Although some chemical compositional data are available about the extracts of Tortella tortusa and Pleurochaete squarrosa, there is no investigation about the compositions and antimicrobial activities of the volatiles from ... -
Chemical composition and antimicrobial activity of the essential oils of five Scrophularia L. Species from Turkey
The essential oils of the five Scrophularia species; Scrophularia chrysantha Jaub. et Spach, Scrophularia kotschyana Benth., Scrophularia olympica Boiss., Scrophularia cinerascens Boiss. and Scrophularia zuvandica Grossh. ... -
Chemical constituents and antimicrobial activities of the essential oils from Sedum pallidum var. bithynicum and S. spurium grown in Turkey
Yaylı, Nuretin; Yaşar, Ahmet; İskender, Nagihan Yılmaz; Yaylı, Nuran; Cansu, Tayyibe Beyza; Coşkunçelebi, Kamil; Karaoğlu, Şengül Alpay (Taylor&Francis LTD., 2010)Chemical compositions of the essential oil of Sedum pallidum Bieb. var. bithynicum (Boiss.) and S. spurium Bieb. (Crassulaceae) from Turkey were investigated by GC-MS, and antimicrobial activity of the oil samples were ... -
Clinopodium vulgare L. subsp. vulgare Ekstresinin Antioksidan, Antimikrobial, Tirozinaz İnhibitor Aktiviteleri ve RP-HPLC ile Fenolik Bileşiklerinin Araştırılması
Şener, Sıla Özlem; Korkmaz, Nuriye; Akkaya, Şeyda; Badem, Merve; Aliyazıcıoğlu, Rezzan; Özgen, Ufuk; Karaoğlu, Şengül Alpay (2018)Clinopodium vulgare L. subsp. vulgare, Clinopodium cinsine ve Lamiaceae familyasına mensup çok yıllık aromatik otsu bir bitkidir. Bu cins bitkiler sıklıkla geleneksel tedavide kullanılmaktadır. Farklı Clinopodium türlerinin ... -
Çay Üretim Aşamalarından İzole Edilen Mayaların Tanımlanması
Çay Dünya'da sudan sonra tüketilen en önemli içecektir. Bu çalışmada, çay yapraklarının tarladan fabrikaya gelişi ile başlayan çay işleme aşamalarından ve poşetlenen siyah çaydan izole edilen mayaların tanımlanması ve bir ... -
Determination of The Microflora, Quality and Mineral Substance Contents of Black Tea (Camellia sinensis)
The black tea is produced from different varieties of Camellia sinensis (Linneaus) O. Kutzeafter withering, rolling, fermantation, drying, classification and packing stages of green tea leaves, buds and the parts of fresh ... -
Ecofriendly solventless synthesis and reduction reaction of some triazole compounds and evaluation of their antimicrobial activity
Özil, Musa; Menteşe, Emre; Karaoğlu, Şengül Alpay; Kahveci, Bahittin (Taylor & Francis Inc, 2013)A number of triazole-3-one compounds have been synthesized, and reduction of the carbonyl group in the molecule has been carried out to give a corresponding hydroxyl group that possesses asymmetric carbon atom in good ... -
Effect of propolis in gastric disorders: inhibition studies on the growth of Helicobacter pylori and production of its urease
Baltaş, Nimet; Karaoğlu, Şengül Alpay; Tarakcı, Cemre; Kolaylı, Sevgi (Taylor & Francis Ltd, 2016)There is considerable interest in alternative approaches to inhibit Helicobacter pylori (H. pylori) and thus treat many stomach diseases. Propolis is a pharmaceutical mixture containing many natural bioactive substances. ... -
The Effect of Trichoderma Seed Priming to Drought Resistance in Tomato (Solanum lycopersicum L.) Plants
Tomato is one of the most important food crops immensely affected by water scarcity. Therefore, it is vital to find biocontrol agents for improving the yield of tomato crop in arid areas. The fungal genus, Trichoderma is ... -
Essential oil analysis and antimicrobial activity of neckera complanata (Hedw.) huebener and neckera crispa Hedw. (Neckeraceae) grown in Turkey
Cansu, Tayyibe Beyza; Özdemir, Turan; Batan, Nevzat; Yaylı, Büşra; Karaoğlu, Şengül Alpay; Yaylı, Nurettin (Chemical Publishing Co., 2014)In this work, the essential oils obtained by hydrodistillation from Neckera complanata (Hedw.) Huebener and Neckera crispa Hedw (Neckeraceae) were analyzed by GC-FID and GC-MS. Twenty-one compounds in the oil of N. complanata, ... -
In vitro evaluation of antimicrobial features of vasopressors
Bostan, Habib; Tomak, Yakup; Karaoğlu, Şengül Alpay; Erdivanlı, Başar; Hancı, Volkan (Elsevier Editora Ltda, 2014)Background: Drugs administered as intravenous infusion may be contaminated during several stages of production or preparation. However studies focusing on antibacterial effects of vasopressor drugs are very rare. This study ... -
Isolation, production, and characterization of an extracellular lipase from Trichoderma harzianum isolated from soil
Bu çalışma, Trichoderma harzianum lipazının karakterizasyonu hakkında ilk rapordur. Yeni bir suş olan Trichoderma harzianum IDM14D topraktan izole edildi. İzole edilen bu suş, lipaz üretimi için çalkalamalı kültürde 30 ... -
Microwave assisted synthesis of some hybrid molecules derived from norfloxacin and investigation of their biological activities
Menteşe, Meltem Yolal; Bayrak, Hacer; Uygun, Yıldız; Mermer, Arif; Ülker, Serdar; Karaoğlu, Şengül Alpay; Demirbaş, Neslihan (Elsevier France-Editions Scientifiques Medicales Elsevier, 2013)Norfloxacin was converted to 7-(4-amino-2-fluorophenyl)piperazin derivative (2) via the formation of nitro compound. the synthesis of the norfloxacin derivatives containing 1,3-thiazole or 1,3-thiazolidin moiety was performed ... -
Microwave-assisted synthesis of some novel benzimidazole derivatives containing imine function and evaluation of their antimicrobial activity
Kahveci, Bahittin; Yılmaz, Fatih; Menteşe, Emre; Özil, Musa; Karaoğlu, Şengül Alpay (Wiley, 2014)4-Bromo-o-phenylenediamine and ethylimido-p-bromophenylacetate, 1, were subjected to microwave irradiation to synthesize benzimidazole derivative, compound 2. Ester derivative, 3, and hydrazide derivative, 4, of compound ... -
Onobrychis Oxyodonta'nın Topraküstü Kısmında Antioksidan, Antimikrobiyal ve Tirozinaz İnhibitör Aktivitesi
Akkaya, Şeyda; Korkmaz, Nuriye; Şener, Sıla Özlem; Badem, Merve; Özgen, Ufuk; Karaoğlu, Şengül Alpay; Aliyazıcıoğlu, Rezzan (2017)Amaç: Dünyada geniş bir alana yayılmış olan Onobrychis türleri, yüksek antioksidan aktiviteye sahip fenolik madde içeriğinden dolayı tıbbi aromatik bitkiler arasında önemli bir yere sahiptir. Bu çalışmanın amacı, Onobrychis ...
