Mikrobiyoloji Anabilim Dalı
https://hdl.handle.net/11421/13736
2024-03-28T16:44:05ZDetermining antioxidant properties of halotolerant microfungi
https://hdl.handle.net/11421/13992
Determining antioxidant properties of halotolerant microfungi
Kaya, Ayla; Cantürk, Zerrin; Kocabiyik, E.; İlhan, Semra
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36th FEBS Congress of the Biochemistry for Tomorrows Medicine -- JUN 25-30, 2011 -- Torino, ITALY; WOS: 000292333102463
2011-01-01T00:00:00ZBiosorption of phenol and 2-chlorophenol by Funalia trogii pellets
https://hdl.handle.net/11421/13991
Biosorption of phenol and 2-chlorophenol by Funalia trogii pellets
Bayramoğlu, Gülay; Gürsel, İhsan; Tunalı, Yağmur; Arıca, Mehmet Yakup
The removal of phenol (Ph) and 2-chlorophenol (2-CPh) from aqueous solution by native and heat inactivated fungus Funalia trogii pellets were investigated. The effects of contact time, solid/liquid ratio, optimum pH and temperature on the phenols removal capacity by the pellets were established. The removal efficiency of phenols increased significantly with increasing biomass dose. The optimum pH was detected to be 8.0. The second-order equations are described and evaluated on the basis of a comparative estimation of the corresponding coefficients. The phenol removal equilibrium isotherm was modeled by the Langmuir equations. The enthalpy change values were obtained between 7.62 and 10.64 kJ/mol. This indicated that the uptake of phenols either on native or heat inactivated fungal pellets was based on a physical adsorption process
WOS: 000264642900004; PubMed ID: 19186052
2009-01-01T00:00:00ZBiosorption of Pb(II) From Aqueous Solutions by a Fungal Biomass in a Batch System: Equilibrium and Kinetic Studies
https://hdl.handle.net/11421/13987
Biosorption of Pb(II) From Aqueous Solutions by a Fungal Biomass in a Batch System: Equilibrium and Kinetic Studies
Tunalı, Yağmur; Karaca, Hülya; Tay, Turgay; Kıvanç, Merih; Bayramoğlu, Gülay
In this study, the biosorption capacity of the fungus Sporotricum sp. biomass in removing of Pb(II) ions from aqueous solution were investigated with different parameters, such as pH, temperature and initial metal ion concentrations in a batch adsorption system. The maximum biosorption of Pb(II) ions onto the Sporotricum sp. biomass was 15.48 mg per g of the biomass. The biosorption of Pb(II) ions increased with increased pH up to 6.0 at which the maximum biosorption was obtained. Temperature change between 15 and 40 degrees C did not affect the biosorption capacity of the fungal biomass. Desorption of the Pb(II) ions was achieved using 0.1 M HCl solution. Biosorption equilibria were established in about 24 h. Biosorption experimental data could be well interpreted by the Langmuir model with maximum adsorption capacity of 16.42 mg g(-1) of Pb(II) ion on to the Sporotricum sp. biomass. Also the correlation regression coefficients show that the biosorption process can be well-defined by Freundlich model. The change in biosorption capacity with time was found to fit the pseudo-second-order kinetic model.
WOS: 000269018300035
2009-01-01T00:00:00ZSynthesis, Characterization, Antibacterial, Antifungal and Antituberculous Activities of Some Macrocyclic Coordination Compounds of Zn(II), Cd(II) & Hg(II)
https://hdl.handle.net/11421/13986
Synthesis, Characterization, Antibacterial, Antifungal and Antituberculous Activities of Some Macrocyclic Coordination Compounds of Zn(II), Cd(II) & Hg(II)
Tunalı, Yağmur; Cantürk, Zerrin; Benkli, Kadriye
The increasing clinical importance of drug-resistant mycobacterial pathogens has lent additional urgency to microbiological research and I new antimycobacterial compound development. For this purpose, in this study, Zn(II), Cd(II) and Hg(II) complexes of a heptadentate, N(5)S(2) donor Schiff base ligands including 2,6-bis(2-aminothiophenoxymethyl) pyridine and 2,2'-bipyridine-6,6'-dicarboxaldehyde were I obtained by using the literature methods and evaluated for antituberculosis activity. Antituberculosis activities of the compounds were I determined by broth microdilution assay, the microplate alamar blue assay, in BACTEC12B medium and results were screened in vitro, I using BACTEC 460 radiometric system against Mycobacterium tuberculosis H(37)R(v) (ATCC 27294) at 6.25 mu g/mL and tested compounds I showed important inhibition ranging from 84 to 58 %. Antimicrobial activities of these complexes have also been searched. All complexes I showed the same activity against Pseudomonas aeruginosa and moderate activities against Proteus vulgaris, but they didn't give significant antibacterial activity against other bacterial strains. On the other hand they showed moderate activities when compared with antifungal agent Ketoconazole against Candida albicans and Candida globrata.
WOS: 000285267300053
2011-01-01T00:00:00Z