Yazar "Bekler, F. Matpan" seçeneğine göre listele

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    Characterization of an extracellular ?-galactosidase produced by thermophilic Bacillus licheniformis KG9 isolated from hot spring in Batman-Turkey
    (Wiley-Blackwell Publishing, Inc, 2010) Kaplan, A.; Guven, R. Gul; Bekler, F. Matpan; Acer, O.; Guven, K.
    [Abstract Not Available]
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    Effects of various inhibitors on ?-Amylase in Anoxybacillus sp. AH1 isolated from hotspring
    (Wiley-Blackwell Publishing, Inc, 2010) Acer, O.; Bekler, F. Matpan; Guven, R. Gul; Pirinccioglu, H.; Kaplan, A.; Guven, K.
    [Abstract Not Available]
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    IN VITRO ANTIMICROBIAL EVALUATION OF COMMERCIAL TEA EXTRACTS AGAINST SOME PATHOGEN FUNGI AND BACTERIA
    (Inst Materials Physics, 2010) Yildirim, N.; Bekler, F. Matpan; Yildirim, N. Cikcikoglu; Dikici, A.
    The in vitro antimicrobial activity of crude ethanol, methanol, hexane and aqueous extracts of commercial tea types such as fennel (Foeniculum sp.), senna (Cassia sp.), basilrosemary (Ocimum sp.-Rosmarinus sp), daisy (Bellis sp.) and sage (Salvia sp) against pathogen fungi (Colletotrichum coccodes, Epicoccum nigrum, Scopulariopsis brevicaulis) and foodborne pathogen bacteria (Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Bacillus cereus, Klebsiella pneumoniae, Enterobacter sp.) were investigated with disk diffusion method. Senna (Cassia sp.) exhibed the most effective antimicrobial activity in both ethanolic and methanolic extracts. The best antimicrobial effect (30.6 mm) against E. nigrium was seen in methanolic senna (Cassia sp.) extract. The results of the study indicate that commercial tea types have showed various levels of antimicrobial activity depend on the type of solvent used in the extraction procedure.
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    Isolation and characterization of ?-Amylase obtained from thermophilic Anoxybacillus sp
    (Wiley-Blackwell, 2010) Ozdemir, S.; Fincan, S.; Bekler, F. Matpan
    [Abstract Not Available]
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    Long-chain alkane degrading Acinetobacter sp BT1A from petroleum contaminated Soil
    (Wiley-Blackwell, 2015) Acer, O.; Bekler, F. Matpan; Guven, R. Gul; Guven, K.
    [Abstract Not Available]
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    Purification and characterisation of polyphenoloxidase from corn tassel
    (Wiley-Blackwell, 2015) Guven, R. G.; Aslan, N.; Guler, C.; Guven, K.; Bekler, F. Matpan; Acer, O.
    [Abstract Not Available]
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    Purification and characterization of polyphenol oxidase from corn tassel
    (C M B Assoc, 2016) Guven, R. Gul; Aslan, N.; Guven, K.; Bekler, F. Matpan; Acer, O.
    In this study, polyphenol oxidase (PPO) from corn tassel was extracted and partially purified through (NH4)(2)SO4 precipitation and gel filtration chromatography. Optimal temperatures for subsrates catechol and 4-methyl catechol were 40 degrees C and 30 degrees C, respectively. The optimal pH values were 8.0 for catechol and 6.0 for 4-methyl catechol. Catechol was the most suitible substrate (Km: 3.48 mM, Vmax: 1.0 Abs./min.). The moleculer mass of PPO was determined as 158 kDa. In this work, sodium azide, ethylenediaminetetraacetic acid (EDTA) and sodium dodecyl sulfate (SDS) were found to inhibit the enzyme activity as 26.6 %, 22.2 % and 12.2 % ratio, respectively. Besides, the effects of carbohydrates such as sucrose, fructose, ribose and glucose on PPO activity were investigated. The enzyme was found to be activated 17 % by fructose and ribose, 16 % by glucose and 4 % by sucrose.
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    Purification and characterization of thermostable ?-amylase from thermophilic Anoxybacillus flavithermus
    (Elsevier Sci Ltd, 2014) Fincan, S. Aguloglu; Enez, B.; Ozdemir, S.; Bekler, F. Matpan
    This study reports on the purification and characterization of thermostable alpha-amylase (alpha-1-4 D-glucan glucanohydrolase EC 3.2.1.1) from a newly isolated Anoxybacillus flavithennus. A. flavithermus was used, which was isolated from hot water springs of Omer, Afyonkarahisar, Turkey. The gram-positive, spore-forming, motile, moderately thermophilic bacteria were found to be a strain of A. flavithermus analysed by 16S rRNA comparison. The optimal conditions for bacterial growth were determined to be at 20th h, 55 degrees C and pH 6.0. Maximum alpha-amylase activity was obtained at 55 degrees C at pH 7.0 after 24h of incubation. Thermostable alpha-amylase from A. flavithermus was purified by 70% (NH4)(2)SO4 and ion-exchange chromatography (5.2-fold; 65.8% yield). The molecular weight of alpha-amylase was 60 kDa, as estimated by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). The alpha-amylase hydrolyzed soluble starch at 55 degrees C with K-m: 0.005 mM and V-max: 3.5 mu mol min(-1). (C) 2013 Elsevier Ltd. All rights reserved.
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    Thermo-alkaliphilic strains producing some industrial enzymes, isolated from Sorgun Hot Spring in Turkey
    (Wiley-Blackwell, 2015) Bekler, F. Matpan; Acer, O.; Dicle, S.; Guven, K.
    [Abstract Not Available]