Browsing Makale Koleksiyonu by Author "Yenidunya, Ali Fazil"
Now showing items 1-8 of 8
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Characterization of thermostable beta-amylase isozymes from Lactobacillus fermentum
Kocabay, Samet; Cetinkaya, Serap; Akkaya, Birnur; Yenidunya, Ali Fazil (ELSEVIER SCIENCE BV, 2016)A strain of Lactobacillus fermentum producing two isozymes of a 20 kDa beta-amylase was isolated from the faecal sample of a newborn. The starin was identified by sequencing its 16S rRNA gene. The two beta-amylase isozymes ... -
Cytotoxicity of three maleic anhydride copolymers and common solvents used for polymer solvation
Karakus, Gulderen; Zengin, Haci Bayram; Polat, Zubeyde Akin; Yenidunya, Ali Fazil; Aydin, Semiha (SPRINGER, 2013)Three maleic anhydride copolymers were synthesized by free-radical copolymerization. The synthesized products were named as follows: maleic anhydride-styrene (MAST); maleic anhydride-vinyl acetate (MAVA), and maleic ... -
Modification of Maleic Anhydride-Styrene Copolymer with Noradrenaline by Chemical and Enzymatic Methods
Karakus, Gulderen; Yenidunya, Ali Fazil; Zengin, Haci Bayram; Polat, Zubeyde Akin (WILEY-BLACKWELL, 2011)Maleic anhydride copolymer was modified with another biologically active agent, noradrenaline (NA), using both chemical and enzymatic methods. The modification and synthesized products were named as follows: chemical ... -
Production and immobilization of a novel thermoalkalophilic extracellular amylase from bacilli isolate
Akkaya, Birnur; Yenidunya, Ali Fazil; Akkaya, Recep (ELSEVIER SCIENCE BV, 2012)A Thermoalkalophilic amylase was produced from an environmental bacterial isolate. The enzyme was then immobilized through its amino groups onto the epoxy rings of magnetic poly glycidyl methacrylate [m-poly (GMA)] beads. ... -
Production, purification, and characterization of metalloprotease from Candida kefyr 41 PSB
Yavuz, Sevgi; Kocabay, Samet; Cetinkaya, Serap; Akkaya, Birnur; Akkaya, Recep; Yenidunya, Ali Fazil; Bakici, Mustafa Zahir (ELSEVIER SCIENCE BV, 2017)A thermostable metalloprotease, produced from an environmental strain of Candida kefyr 41 PSB, was purified 16 fold with a 60% yield by cold ethanol precipitation and affinity chromatography (bentoniteacrylamide-cysteine ... -
Properties of an extracellular lipase from a traditional yoghurt yeast
Akkaya, Birnur; Yenidunya, Ali Fazil (WALTER DE GRUYTER GMBH, 2012)Purpose: To produce an organic solvent tolerant extracellular lipase from a traditional yoghurt Saccharomyces cerevisiae isolate and to characterize this enzyme activity. Material and Methods: A traditional yoghurt sample ... -
Synthesis, characterization and cytotoxicity of novel modified poly[(maleic anhydride)-co-(vinyl acetate)]/noradrenaline conjugate
Karakus, Gulderen; Polat, Zubeyde Akin; Yenidunya, Ali Fazil; Zengin, Haci Bayram; Karakus, Can Bulent (WILEY-BLACKWELL, 2013)Poly[(maleic anhydride)-co-(vinyl acetate)] (MAVA) copolymer was synthesized by free radical polymerization reaction, in methyl ethyl ketone at 80 degrees C, using benzoyl peroxide as the initiator. The copolymer was then ... -
Synthesis, characterization, and assessment of cytotoxic, antiproliferative, and antiangiogenic effects of a novel procainamide hydrochloride-poly(maleic anhydride-co-styrene) conjugate
Karakus, Gulderen; Polat, Zubeyde Akin; Yaglioglu, Ayse Sahin; Karahan, Mesut; Yenidunya, Ali Fazil (TAYLOR & FRANCIS LTD, 2013)Poly(maleic anhydride-co-styrene) (MAST) was synthesized by a free-radical polymerization reaction. A bioactive molecule, procainamide hydrochloride (PH), was then conjugated to MAST. The conjugation product was named as ...