نتایج جستجو برای: Immobilized

تعداد نتایج: 17681  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1990
mohammad ali nabirahni

presently there are a number of fine and sensitive methods for determining chemical or biochemical substance among which bio electrodes represent the most recent development. bioelectrodes consist of biologically active materials (e.g enzyme, antibody, whole cell or cell fragments) held in close proximity to a suitable electrochemical transducer that sense specific electroactive enzyme substrat...

Journal: :biomacromolecular journal 2015
parastou rahimizadeh saeed najavand mohammad pazhang

aacel9a [β-1,4-endoglucanase, (e.c:3.2.1.4)], was immobilized onto glutaraldehyde activated chitosan macrosphere by covalent attachment. the properties of the immobilized aacel9a were investigated by determining the optimum ph and optimum temperature for activity, thermal stability, and kinetic parameters. the immobilization process shifted the enzyme’s optimum temperature from 65 °c for the fr...

Journal: :biomacromolecular journal 0
tayebeh nazari department of bioscience and biotechnology, malek-ashtar university of technology, tehran, iran mahdi alijanianzadeh department of bioscience and biotechnology, malek ashtar university of technology, tehran, iran ahmad molaeirad department of bioscience and biotechnology, malek-ashtar university of technology, tehran, iran maryam khayati department of bioscience and biotechnology, malek-ashtar university of technology, tehran, iran

proteases are important enzymes that their role in various industries is undeniable. however, keeping enzymes stable during its activity in harsh conditions is so important. in this study, protease enzyme was immobilized on the porous silica particles and its stability in different temperatures and phs was evaluated. first silica particles were aminated by 3-aminopropyltriethoxysilane then the ...

Journal: :nanomedicine journal 0
narges babadaie samani department of biochemistry, falavarjan branch, islamic azad university, isfahan, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) hashem nayeri department of biochemistry, falavarjan branch, islamic azad university, isfahan, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) gholamreza amiri amiri falavarjan branch, islamic azad university, isfahan, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

objective(s): enzyme immobilization via nanoparticles is perfectly compatible against the other chemical or biological approximate to improve enzyme functions and stability. in this study lactoperoxidase was immobilized onto silica-coated magnetite nanoparticles to improve enzyme properties in the presence of cadmium chloride as an inhibitor. materials and methods:  the process consists of the ...

AaCel9A [β-1,4-endoglucanase, (E.C:3.2.1.4)], was immobilized onto glutaraldehyde activated chitosan macrosphere by covalent attachment. The properties of the immobilized AaCel9A were investigated by determining the optimum pH and optimum temperature for activity, thermal stability, and kinetic parameters. The immobilization process shifted the enzyme’s optimum temperature from 65 °C for the fr...

Journal: :iranian journal of pharmaceutical sciences 0
gholamreza asghari department of pharmacognosy, faculty of pharmacy, isfahan university of medical sciences, and isfahan pharmaceutical research center, isfahan university of medical sciences, isfahan, iran shohreh mahmudi department of pharmacognosy, faculty of pharmacy, isfahan university of medical sciences, isfahan, iran

the abilities of silybum marianum cell culture to biotransform benzaldehyde to benzyl alcohol in three culture systems were compared. callus cultures of silybum marianum were established from seedlings, and healthy suspensions and immobilized cultures grown on the murashige and skoog medium. s. marianum cells were immobilized in both agar beads and fiber cotton matrixes. benzaldehyde was fed to...

Shima Saffarionpour Zahra Ghobadinejad سهیلا یغمایی,

Alkaline Protease enzyme produced from Bacillus Licheniformis PTCC1331 in optimum Condition(Temperature 37 ?C, 150 rpm, PH=10), is immobilized in different concentrations of Sodium Alginate using entrapment method, to increase its thermal resistance in detergents, and its activity is measured thereafter. Maximum enzymatic activity of 46 was obtained in 2%w/v Sodium alginate solution. Investiga...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1992
m.a. nabirahni

an enzyme electrode was developed using the enzyme sulfite oxidase (ec1.8.3.1) immobilized onto pig intestine. hydrogen peroxide produced was monitored amperometrically. all experimental parameters such as ph, temperature, buffer constituent concentration, were thoroughly investigated and optimized when appropriate. the response to sulfite concentration was linear in the range 5.2´10-6 to 1.02´...

ژورنال: علوم آب و خاک 2002
گیتی امتیازی, , حسین شریعتمداری, , علی ا‌کبر صفری سنجانی, ,

Soil organic matter and clay minerals adsorb and immobilize extracellular enzymes of microorganisms and increase soil enzymes stability. This study aims to clarify the relative importance of soil organic matter and clay minerals on the cellulolytic activities of soils. Fluca prepared cellulase was immobilized on some agricultural residues and clay minerals, avicel and a sample of soil. Immobili...

گیتی امتیازی, , حسین شریعتمداری, , علی ا‌کبر صفری سنجانی, ,

Soil organic matter and clay minerals adsorb and immobilize extracellular enzymes of microorganisms and increase soil enzymes stability. This study aims to clarify the relative importance of soil organic matter and clay minerals on the cellulolytic activities of soils. Fluca prepared cellulase was immobilized on some agricultural residues and clay minerals, avicel and a sample of soil. Immobili...

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