Yazar "RTEÜ, Fen - Edebiyat Fakültesi, Kimya Bölümü" için FEF, Kimya Bölümü Koleksiyonu listeleme
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Benzimidazolone-piperazine/triazole/thiadiazole/furan/thiophene conjugates: Synthesis, in vitro urease inhibition, and in silico molecular docking studies
Güven, Okan; Menteşe, Emre; Emirik, Mustafa; Sökmen, Bahar Bilgin; Akyüz, Gülay (Wiley, 2023)This study describes the synthesis, in vitro urease inhibition, and molecular docking studies of benzimidazolone derivatives incorporating the piperazine, triazole, thiadiazole, furan, thiophene, and thiosemicarbazide ... -
Binuclear transition metal complexes of a novel lateral ‒N-methylthiosemicarbazone through the central ethylene bridge: Synthesis, structural characterization and the response of ligand molecule to different solvent media
Er, Mustafa; Sancak, Kemal; Değirmencioğlu, İsmail; Serbest, Kerim (Elsevier, 2008)The condensation of 2,2?-(2,3-bis((1-formylnaphthalen-2-yloxy)methyl)but-2-ene-1,4-diy l)bis(oxy)di-1-naphthaldehyde with 4-methyl thiosemicarbazide gave a novel N-methylthiosemicarbazone and then the reaction of this ... -
Bioactivity and enzyme inhibition properties of Stevia rebaudiana
Can, Zehra; Baltaş, Nimet (Bentham Science Publishers B.V., 2016)Objective: The main study was to evaluate the anti- inflammatory, anti-oxidant, and the gastro-protective properties of extracts of Stevia rebaudiana. In addition the purpose of the study was to investigate new, natural ... -
Biochemical properties of partially purified polyphenol oxidase and phenolic compounds of Prunus spinosa L. subsp dasyphylla as measured by HPLC-UV
Baltaş, Nimet; Pakyıldız, Semra; Can, Zehra; Dinçer, Barbaros; Kolaylı, Sevgi (Taylor & Francis Inc, 2017)Polyphenol oxidase (PPO) enzyme was extracted from Prunus spinosa L. subsp. dasyphylla plum, partially purified by acetone precipitation, and its biochemical properties were investigated. Different substrates (p-coumaric ... -
Bioevaluation of synthetic pyridones as dual inhibitors of alpha-amylase and alpha-glucosidase enzymes and potential antioxidants
Saleem, Faiza; Khan, Khalid Mohammed; Ullah, Nisar; Özil, Musa; Baltaş, Nimet; Hameed, Shehryar; Salar, Uzma; Wadood, Abdul; Rehman, Ashfaq Ur; Kumar, Mukesh; Taha, Muhammad; Haider, Syed Moazzam (Wiley, 2022)Herein, a library of novel pyridone derivatives 1-34 was designed, synthesized, and evaluated for alpha-amylase and alpha-glucosidase inhibitory as well as antioxidant activities. Pyridone derivatives 1-34 were synthesized ... -
Calculation of thermodynamic properties of the most important forty-seven different solvents to create an information data bank through semi-empirical quantum methods used in determination of theoretical pKa
İslamoğlu, Fatih; Erdoğan, Naciye (Natl Inst Science Communication-Niscair, 2020)In this study, we have calculated the thermodynamic properties, especially in determining the theoretical acidic properties and pKa values of organic compounds, as enthalpy (Delta H, kcal/mol), heat capacity (C, cal/Kmol), ... -
The cardioprotective mechanism of phenylaminoethyl selenides (PAESe) against doxorubicin-Induced cardiotoxicity involves frataxin
Fu, Xiaoyu; Eggert, Mathew; Yoo, Sieun; Patel, Nikhi; Zhong, Juming; Steinke, Ian; Govindarajulu, Manoj; Turumtay, Emine Akyüz; Mouli, Shravanthi; Panizzi, Peter; Beyers, Ronald; Denney, Thomas; Arnold, Robert; Amin, Rajesh H. (Frontiers Media, 2021)Doxorubicin (DOX) is an anthracycline cancer chemotherapeutic that exhibits cumulative dose-limiting cardiotoxicity and limits its clinical utility. DOX treatment results in the development of morbid cardiac hypertrophy ... -
Cellulose ester-based aerogel: lightweight and highly water-absorbent
Aksu, Kadir; Kaya, Mehmet (American Chemical Society, 2023)Cellulose was extracted from waste generated by pruning tea stem wastes. The interaction between pure cellulose and homophthalic acid produced a light (0.22 g·cm-3) and eco-friendly hybrid aerogel product that is highly ... -
Chalcone-based dipolar cycloaddition of novel heteroaromatic compounds: Their anticancer examination
Kınalı, Mehmet; Çöl, Sümeyye; Çoban, Canan Çakır; Türk, Mustafa; Aydın, Gökay; Emirik, Mustafa; Baran, Arif (Elsevier, 2023)In this study, new chalcone-isoxazole-based hybrid derivatives (12, 13, 18, and 21) and chalcone-triazole hybrid molecules (26) were synthesized using the click chemistry approach. Among these hybrid molecules, 12, 13, 21, ... -
Characterization and inhibition studies of carbonic anhydrase from gill of Russian Sturgeon Fish (Acipenser gueldenstaedtii)
Dincer, Barbaros; Ekinci, Arife Pınar; Akyüz, Gülay; Kurtoğlu, İlker Zeki (Taylor & Francis Ltd, 2016)An alpha-carbonic anhydrase (CA, EC 4.2.1.1) was purified and characterized kinetically from gill of Acipenser gueldenstaedtii as an endangered sturgeon species. the carbonic anhydrase was purified 66-folds with yield 20.7% ... -
Characterization and pillaring of a Turkish bentonite (Resadiye)
Tabak, Ahmet; Afsin, B.; Çağlar, B.; Köksal, E. (Elsevier, 2007)The shifts of the Si{single bond}O{single bond}Si stretching and the Si{single bond}O{single bond}Al and Si{single bond}O{single bond}Si bending modes, as well as the free silica peak in the IR spectra and the strengthening ... -
Characterization of AlFe-pillared Unye bentonite: A study of the surface acidity and catalytic property
Çağlar, Bülent; Çubuk, Osman; Demir, Ersin; Çoldur, Fatih; Çatır, Mustafa; Topcu, Cihan; Tabak, Ahmet (Elsevier Science Bv, 2015)Aluminium-iron-pillared bentonite has been prepared by incorporation of the iron mixed aluminium-polyoxocation into bentonite layers and characterized by the powder X-ray diffraction, Fourier transform infrared, thermal ... -
Characterization of unye bentonite after treatment with sulfuric acid
Çağlar, Bülent; Afşin, Beytullah; Köksal, Engin; Tabak, Ahmet; Eren, Erdal (SOC Brasileira Quimica, 2013)Unye bentonite was found to consist predominantly of a dioctahedral smectite along with quartz, tridymite, cristobalite, and minor fractions of feldspar and anatase. A considerable amount of Al was retained as a constituent ... -
Chemical analysis and biological activity of the essential oils and extracts of two liverwort species growing in Turkey
Çelik, Gonca; Şahin, Hüseyin; Baltaş, Nimet; Batan, Nevzat; Karaoğlu, Şengül Alpay; Yaylı, Nurettin (University Belgrade, 2023)The aim of this study was to investigate the chemical composition of the essential oils (EOs) from two Diplophyllum species and to evaluate their bioactivity potential [antimicrobial, antioxidant, anti-urease, anti-xanthine ... -
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 variation, antimicrobial, nitric oxide scavenging activities and tyrosinase inhibition of essential oils and solvent extracts from filipendula vulgaris moench growing in Turkey
Fandaklı, Seda; Korkmaz, Büşra; Faiz, Özlem; Kılıç, Gözde; Erik, İshak; Terzioğlu, Salih; Yaylı, Nurettin (Shaheed Beheshti University, 2021)Volatile organic compositions of the essential oils (EOs), solid-phase microextraction (SPME) and SPME of n-hexane extracts from the flower and stem-leaf of Filipendula vulgaris (F. vulgaris) were analyzed by GC-FID/MS. A ... -
Cloning, expression and characterization of alkaline phosphatase from a thermophilic bacterium Geobacillus caldoxylosilyticus TK4
Çöl, Melek; Çolak, Ahmet; Ertunga, Nagihan Sağlam; Yıldırım, Melike; Özel, Arzu (Turkish Biochemistry Society, 2010)Aim: To clone the gene for alkaline phosphatase (AP) from a novel thermophilic Geobacillus caldoxylosilyticus TK4 strain and to express and characterize this enzyme. Methods: The gene was cloned into pET28a(+) vector and ... -
Cloning, expression and characterization of highly thermo- and pH-stable maltogenic amylase from a thermophilic bacterium Geobacillus caldoxylosilyticus TK4
Kolcuoğlu, Yakup; Çolak, Ahmet; Faiz, Özlem; Belduz, Ali Osman (Elsevier, 2010)Maltogenic amylases (MAases), a subclass of cyclodextrin (CD)-hydrolyzing enzymes, belong to glycoside hydrolase family 13. A gene corresponding to MA in Geobacillus caldoxylosilyticus TK4 (GcaTK4MA) was cloned into pET28a(+) ... -
Cloning, expression and characterization of xylose isomerase from thermophilic Geobacillus caldoxylosilyticus TK4 strain
Faiz, Özlem; Çolak, Ahmet; Kolcuoğlu, Yakup; Ertunga, Nagihan Sağlam (Turkish Biochemistry Society, 2011)Aim: To clone the gene of Xylose isomerase (XyI) from thermophilic Geobacillus cal-doxylosilyticus TK4 strain and to express and characterize this enzyme. Methods: XyI gene of Geobacillus caldoxylolyticus was cloned into ... -
Cobalt borophosphate on nickel foam as an electrocatalyst for water splitting
Ülker, Emine; Akbari, Sina Sadigh; Karadaş, Ferdi (Elsevier, 2022)One of the most critical steps in the transition to carbon-free energy systems is sustainable hydrogen evolution from water. In this research, a cobalt borophosphate crystalline compound consisting of phosphate and borate ...