نتایج جستجو برای: immobilized whole

تعداد نتایج: 298060  

In this study, immobilization of partially purified almond (Amygdalus communis) β-galactosidase on Con A layered calcium alginate-cellulose beads was investigated. Immobilized β-galactosidase retained 72% of theinitial activity after crosslinking by glutaraldehyde. Both soluble and immobilized enzyme exhibited the samepH and temperature optima at pH 5.5 and 50ºC, respectively. Howev...

Journal: :Biotechnology and bioengineering 2005
Cíntia D F Milagre Humberto M S Milagre J Augusto R Rodrigues Lilian L Rocha Leonardo S Santos Marcos N Eberlin

Real-time and on-line continuous monitoring of reactants, intermediates, and final products for dicarbonyl compound bioreduction in a continuous plug flow reactor packed with baker's yeast (Saccharomyces cerevisiae) whole cells immobilized on calcium alginate beads was performed by membrane introduction mass spectrometry (MIMS) via selective ion monitoring.

Journal: :The Journal of Automatic Chemistry 1988
J. Ruz F. Lázaro M. D. Luque de Castro

An overview of the use of immobilized enzymes in flow-injection analysis (FIA) is presented. The joint use of FIA and immobilized enzymes means that analytical procedures are easily automated, analytical costs are reduced and methods are faster. The future possibilities for this combination are discussed.

Journal: :journal of chemical and petroleum engineering 2010
shima saffarionpour سهیلا یغمایی zahra ghobadinejad

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. investigat...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
Yevgeny Moskovitz Simcha Srebnik

We introduce a two-dimensional lattice model of immobilization and stabilization of proteinlike polymers using grafted polymers. The protein is designed to have a specific bulk conformation reproducing a catalytic cleft of natural enzymes. Our model predicts a first order denaturing adsorption transition of free proteins. On the other hand, for an immobilized protein we observe a more gradual d...

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 2016
Gholamreza Amiri Amiri Hashem Nayeri, Narges Babadaie Samani

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 ...

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