Browsing by Author "Guven, Kemal"
Now showing items 1-20 of 28
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Acinetobacter mesopotamicussp. nov., Petroleum-degrading Bacterium, Isolated from Petroleum-Contaminated Soil in Diyarbakir, in the Southeast of Turkey
Acer, Omer; Guven, Kemal; Poli, Annarita; Di Donato, Paola; Leone, Luigi; Buono, Lorena; Guven, Reyhan Gul (Springer, 2020)A new petroleum-degrading bacterium, designated strain GC2(T), was isolated from Bozkus 1 petroleum station in Diyarbakir, located in the southeast of Turkey. Cells were Gram-negative staining, aerobic, coccoid-rods, ... -
Anoxybacillus kamchatkensis subsp asaccharedens subsp nov., a thermophilic bacterium isolated from a hot spring in Batman
Gul-Guven, Reyhan; Guven, Kemal; Poli, Annarita; Nicolaus, Barbara (Microbiol Res Foundation, 2008)A new thermophilic spore-forming strain KG8(T) Was isolated from the mud of Taslidere hot spring in Batman. Strain KG8(T) was aerobe, Gram-positive, rod-shaped, motile, occurring in pairs or filamentous. Growth was observed ... -
Anoxybacillus sp AH1, an ?-amylase-producing thermophilic bacterium isolated from Dargecit hot spring
Acer, Omer; Pirinccioglu, Hemse; Bekler, Fatma Matpan; Gul-Guven, Reyhan; Guven, Kemal (Springer, 2015)The present study was conducted to isolate alpha-amylase-producing thermophilic bacteria from Dargecit hot springs in Turkey. The morphological, biochemical and physiological characterisation, as well as genetic analysis ... -
Barrier height enhancement of metal/semiconductor contact by an enzyme biofilm interlayer
Ocak, Yusuf Selim; Guven, Reyhan Gul; Tombak, Ahmet; Kilicoglu, Tahsin; Guven, Kemal; Dogru, Mehmet (Taylor & Francis Ltd, 2013)A metal/interlayer/semiconductor (Al/enzyme/p-Si) MIS device was fabricated using -amylase enzyme as a thin biofilm interlayer. It was observed that the device showed an excellent rectifying behavior and the barrier height ... -
Biosorption of Cd+2, Cu+2, and Ni+2 Ions by a Thermophilic Haloalkalitolerant Bacterial Strain (KG9) Immobilized on Amberlite XAD-4
Alkan, Huseyin; Gul-Guven, Reyhan; Guven, Kemal; Erdogan, Salt; Dogru, Mehmet (Hard, 2015)A newly isolated thermophilic haloalkalitolerant bacterial strain (KG9) as immobilized cells on a solid support was presented as a new biosorbent for the enrichment of Cd(II), Cu(II), and Ni(II) prior to flame atomic ... -
Biosorption of Cd, Cu, Ni, Mn and Zn from aqueous solutions by thermophilic bacteria, Geobacillus toebii sub.sp decanicus and Geobacillus thermoleovorans sub.sp stromboliensis: Equilibrium, kinetic and thermodynamic studies
Ozdemir, Sadin; Kilinc, Ersin; Poli, Annarita; Nicolaus, Barbara; Guven, Kemal (Elsevier Science Sa, 2009)Biosorption of each of the ions Cd2+, Cu2+, Ni2+, Zn2+ and Mn2+ on Geobacillus toebii sub.sp. decanicus (G1) and Geobacillus thermoleovorans sub.sp. stromboliensis (G2) in a batch stirred system was investigated. The ... -
Cd, Cu, Ni, Mn and Zn resistance and bioaccumulation by thermophilic bacteria, Geobacillus toebii subsp decanicus and Geobacillus thermoleovorans subsp stromboliensis
Ozdemir, Sadin; Kilinc, Ersin; Poli, Annarita; Nicolaus, Barbara; Guven, Kemal (Springer, 2012)Bioaccumulation and heavy metal resistance of Cd2+, Cu2+, Ni2+, Zn2+ and Mn2+ ions by thermophilic Geobacillus toebii subsp. decanicus and Geobacillus thermoleovorans subsp. stromboliensis were investigated. The metal ... -
Characterisation of a partially purified protease from Bacillus cereus KG5 isolated from a hot spring
Ahmetoglu, Nazenin; Bekler, Fatma Matpan; Guven, Reyhan Gul; Acer, Omer; Guven, Kemal (Elsevier Sci Ltd, 2011)[Abstract Not Available] -
Effects of endosulfan, thiamethoxam, and indoxacarb in combination with atrazine on multi-biomarkers in Gammarus kischineffensis
Demirci, Ozlem; Guven, Kemal; Asma, Dilek; Ogut, Serdal; Ugurlu, Pelin (Academic Press Inc Elsevier Science, 2018)Studies addressing the toxicity of pesticides towards non-target organisms focus on the median lethal concentration and biochemical response of individual pesticides. However, when determining environmental risks, it is ... -
Effects of radio-frequency fields on bacterial cell membranes and nematode temperature-sensitive mutants
Gul Guven, Reyhan; Guven, Kemal; Dawe, Adam; Worthington, John; Harvell, Christopher; Popple, Amy; Smith, Tim (Elsevier Science Inc, 2006)Membrane-related bioeffects have been reported in response to both radio-frequency (RF) and extremely low-frequency (ELF) electromagnetic fields (EMFs), particularly in neural cells. We have tested whether RF fields might ... -
The Effects of Silver Nanoparticles (AgNPs) on Thermophilic Bacteria: Antibacterial, Morphological, Physiological and Biochemical Investigations
Jahan, Israt; Bekler, Fatma Matpan; Tunc, Ahmed; Guven, Kemal (Mdpi, 2024)Since thermophilic microorganisms are valuable sources of thermostable enzymes, it is essential to recognize the potential toxicity of silver nanoparticles used in diverse industrial sectors. Thermophilic bacteria Geobacillus ... -
Effects of Various Inhibitors on ?-galactosidase Purified from the Thermoacidophilic Alicyclobacillus acidocaldarius Subsp Rittmannii Isolated from Antarctica
Guven, Reyhan Gul; Kaplan, Alevcan; Guven, Kemal; Matpan, Fatma; Dogru, Mehmet (Korean Soc Biotechnology & Bioengineering, 2011)beta-Galactosidase purified from the thermoacidophilic Alicyclobacillus acidocaldarius subsp. rittmannii isolated from Antarctica is a member of the GH42 family. The enzyme was not effected by various concentrations of its ... -
Evaluation of antibacterial effects of some traditional plants against pathogen microorganisms
Guven, Kemal; Matpan Bekler, Fatma; Yalaz, Secil; Gul Guven, Reyhan; Demirtas Aksu, Merve; Ipekci, Mert; Tusar, Firdevs Rozan (Banats Univ Agricultural Sciences & Veterinary Medicine Timisoara, 2020)Antimicrobial resistance has been an increasing problem in public health around the world. Natural plants can be utilised as an important source for antimicrobial agents to be used in place of synthetic drugs due to their ... -
Extremely low-frequency magnetic field induces manganese accumulation in brain, kidney and liver of rats
Celik, Mustafa Salih; Guven, Kemal; Akpolat, Veysi; Akdag, Mehmet Zulkuf; Naziroglu, Mustafa; Gul-Guven, Reyhan; Celik, M. Yusuf (Sage Publications Inc, 2015)The aim of the present study was to determine the effects of extremely low-frequency magnetic field (ELF-MF) on accumulation of manganese (Mn) in the kidney, liver and brain of rats. A total of 40 rats were randomly divided ... -
Geobacillus subterraneus subsp aromaticivorans subsp nov., a novel thermophilic and alkaliphilic bacterium isolated from a hot spring in Sirnak, Turkey
Poli, Annarita; Guven, Kemal; Romano, Ida; Pirinccioglu, Hamsi; Guven, Reyhan Gul; Euzeby, Jean Paul Marie; Matpan, Fatma (Microbiol Res Foundation, 2012)A new thermophilic spore-forming strain Ge1(T) was isolated from the Guclukonak hot spring in Sirnak, Turkey. The strain was identified by using a polyphasic taxonomic approach. Strain Ge1(T) was Gram-positive, spore-forming, ... -
Isolation and characterization of long-chain alkane-degrading Acinetobacter sp BT1A from oil-contaminated soil in Diyarbakir, in the Southeast of Turkey
Acer, Omer; Guven, Kemal; Bekler, Fatma Matpan; Gul-Guven, Reyhan (Taylor & Francis Inc, 2016)A strain of long-chain alkane-degrading bacteria, BT1A, was isolated from oil-contaminated soil in Diyarbakr, in the southeast of Turkey. Morphological, biochemical, and physiological characterization and 16S rRNA gene ... -
Isolation and characterization of long-chain alkane-degrading Acinetobacter sp. BT1A from oil-contaminated soil in Diyarbakir, in the Southeast of Turkey (vol 20, pg 80, 2016)
Acer, Omer; Guven, Kemal; Bekler, Fatma Matpan; Gul-Guven, Reyhan (Taylor & Francis Inc, 2017)[Abstract Not Available] -
Isolation and cloning of extracellular thermostable ?-galactosidases from a newly isolated Thermophilic Bacillus licheniformis KG9
Bekler, Fatma Matpan; Stougaard, Peter; Guven, Reyhan Gul; Guven, Kemal (Elsevier Sci Ltd, 2011)[Abstract Not Available] -
Isolation and identification of petroleum degrading bacteria
Guven, Reyhan Gul; Bekler, Fatma Matpan; Kaya, Hasan; Acer, Omer; Guven, Kemal; Temel, Hamdi (Elsevier Sci Ltd, 2011)[Abstract Not Available] -
Isolation and production of thermostable ?-amylase from thermophilic Anoxybacillus sp KP1 from Diyadin hot spring in Agri, Turkey
Bekler, Fatma Matpan; Guven, Kemal (Springer, 2014)A novel amylolytic enzyme producing thermophilic bacterial strain KP1 from the Diyadin hot spring water in Agri, Turkey, was isolated in the present study. Phylogenetic analysis based on the partial 16S rRNA gene, biochemical ...
